two chemicals a and b are combined to form a chemical c. the rate, or velocity, of the reaction is proportional to the product of the instantaneous amounts of a and b not converted to chemical c. initially, there are 40 grams of a and 50 grams of b, and for each gram of b, 2 grams of a is used. it is observed that 10 grams of c is formed in 10 minutes. how much (in grams) is formed in 20 minutes? (round your answer to one decimal place.) 29.3 incorrect: your answer is incorrect. grams what is the limiting amount (in grams) of c after a long time? grams how much (in grams) of chemicals a and b remains after a long time? a grams b grams

Answer:25 percent​ means ​one fourth​. To calculate 25 percent of a number, simply divide it by 4. For example, 25 percent of 12 is 12 divided by 4, or 3

a) 6272640 cubic inches of water fell on the lot

b) 3630 cubic feet of water fell on the lot

c) the weight of the water that fell on the lot = 112.53 tons

d) gallons of water fell on the lot = 27,115.7 gallons

460 acre=1 [tex]mi^{2}[/tex]

1 acre=1/460 [tex]mi^{2}[/tex]

1 mi=5280 ft

1 mi2=5280×5280[tex]ft^{2}[/tex]

1 acre=(5280×5280)/460

1 acre= 43560 sq ft

As one inch is equal to one-twelfth of a foot, one acre of water that is 1 inch deep takes up 3630 cubic feet (43560×(1/12)).

One cubic foot is equal to 12 inches by 12 inches by 12 inches,

or 12×12×12=1728 cubic inches.

6272640 cubic inches are contained in 3630 cubic feet, or 3630 × 728.

Hence, 6272640 cubic inches of water fell on the lot.

If 1 inch of rain fell over your one acre lot, 3630 cubic feet of water fell on the lot.

3630 times 62 is 225,060 pounds, the weight in pounds.

We are aware that a tons weighs 2000 lb.

225060/2000 = 112.53 tons

Hence, the weight of the water that fell on the lot=112.53 tons.

If there are around 8.3 pounds in 1 gallon of water,

Number of gallons of water fell on the lot

=225060/8.3

=27,115.7 gallons

Hence, gallons of water fell on the lot=27,115.7 gallons.

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Answer:

x ≈ 12.33

Step-by-step explanation:

given 2 secants from an external point to the circle, then the product of the measures of one secant's external part and the entire secant is equal to the product of the measures of the other secant's external part and that entire secant, that is

DC × (DC + x) = BC × (BC + AB) , that is

6(6 + x) = 5 × (5 + 17) = 5 × 22 = 110

36 + 6x = 110 ( subtract 36 from both sides )

6x = 74 ( divide both sides by 6 )

x = 12.33 ( to the nearest hundredth )

Answer: B and D

Step-by-step explanation:

simple interest would produce ₹ 9000 as interest in 2 years? Rate = 12% p.a. Principal = ? Hence, the required principal amount = ₹ 37500

Answer:

SI=P*R*T/100

SI=9000*12*2/100

SI=2160

TOTAL AMOUNT=2160+9000=11160

The constant of proportionality (r) in the table of values of x and y has a value of 0.5.

To find the constant of proportionality (r) in the equation y = rx, we need to determine the ratio of y to x for each pair of quantities given in the table.

If x and y are proportional, then this ratio should be the same for all pairs of quantities.

Using the table, we have:

y/x = 4.5/9 = 0.5

y/x = 7/14 = 0.5

y/x = 15/30 = 0.5

Since the ratio of y to x is the same for all pairs of quantities, we can conclude that x and y are indeed proportional, and the constant of proportionality (r) is 0.5.

Therefore, the equation that represents the relationship between x and y is:

y = 0.5x

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Complete question

Rewrite the following properly and solve:

The quantitiesx and y are proportional.

x   y

9   4.5

14  7

30  15

Find the constant of proportionality (r) in the equation

y = rx

Answer:

Paula will use 45 oz of sauce and 30 oz of cheese to make 5 pizzas

How to find quantity of ingredients for 5 pizzas?

To find this, you can use the proportion of ingredients used for 2 pizzas and scale it up to 5 pizzas.

For 2 pizzas, Paula uses 18 oz of sauce and 12 oz of cheese.

The proportion of sauce to cheese used is 18/12

To make 5 pizzas, you can use this proportion to find how much sauce and cheese is needed:

2 pizzas =  18 sauce

5 pizzas = 5 / 2 x 18 = 45 sauces.

For cheese required, Paula will use:

2 pizzas =  12 cheese

5 pizzas = 5 / 2 x 12 = 30 cheese.

So the total is 45 oz of sauce and 30 oz of cheese.

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Step-by-step explanation:

Answer:

Paula will use 45 oz of sauce and 30 oz of cheese to make 5 pizzas

Step-by-step explanation:

(i)   a

(ii)  {x | x ∈ R, x ≠ 3, x ≥ 1}

(i) To evaluate f(4), f(5), and f(a + 1), we replace x with 4, 5, and a + 1 in f(x) respectively. We have; f(4) = √ 4 − 1 4 − 3= √ 3 1= √ 3f(5) = √ 5 − 1 5 − 3= √ 4 2= 2f(a + 1) = √ a + 1 − 1 a + 1 − 3= √ a 2= a

(ii) Domain of f:The expression in the denominator cannot be equal to zero, so we must ensure that x − 3 ≠ 0. Therefore, x ≠ 3The expression in the square root must be greater than or equal to zero, so we must ensure that x − 1 ≥ 0. Therefore, x ≥ 1The domain of f is {x | x ∈ R, x ≠ 3, x ≥ 1}.

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For the equation [tex]x^8-1=0[/tex], the graph with magnitudes of the roots is plotted on complex plane.

What is an equation?

A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").

The equation is given as [tex]x^8-1=0[/tex].

We can start by factoring the left-hand side of the equation using the difference of squares formula -

[tex](x^4 - 1)(x^4 + 1) = 0[/tex]

Now we have two factors that can each be set equal to zero and solved separately -

[tex]x^4 - 1 = 0[/tex] or [tex]x^4 + 1 = 0[/tex]

The first equation can be factored as a difference of squares again -

(x² - 1)(x² + 1) = 0

Setting each factor equal to zero gives -

x² - 1 = 0 or x² + 1 = 0

These equations have solutions x = ±1 and x = ±i, respectively.

For the second equation, we can use the fact that i^2 = -1 to rewrite it as -

[tex]x^4 + 1 = (x^2)^2 + 1 = (x^2 + i)(x^2 - i) = 0[/tex]

Setting each factor equal to zero gives -

x² + i = 0 or x² - i = 0

These equations have solutions [tex]x = \pm i\sqrt{2}[/tex] and [tex]x = \pm i\sqrt{-2} = \pm i\sqrt{2i} = \pm \sqrt{2}i[/tex], respectively.

Therefore, the complete set of solutions to the original equation is -

x = ±1, ±i, ±i√(2), ±√2 i

To find the magnitudes of these roots, we can use the formula -

|a + bi| = √(a² + b²)

For example, the magnitude of the root x = i is -

|i| = |0 + 1i| = √(0² + 1²) = 1

Similarly, we can find the magnitudes of the other roots -

|x| = 1 for x = ±1, ±i

|x| = √2 for x = ±i√(2)

|x| = √2 for x = ±√2 i

To draw these roots on the complex plane, we can plot them according to their real and imaginary parts.

The roots ±1 and ±i lie on the unit circle centered at the origin, while the roots ±i√(2) and ±√2 i lie on circles centered at the origin with radii equal to √2.

Therefore, the roots are plotted in complex plane.

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Answer:

3.9 miles

Step-by-step explanation:

To find:-

Answer:-

The given situation is represented in the attachment.

We can see that there is a formation of right angled triangle , hence we can use Pythagoras theorem here , according to which,

[tex]\rm\implies a^2+b^2=h^2 \\[/tex]

where h is the longest side (hypotenuse) of the triangle of the triangle . From the attached figure we can see that 8miles is hypotenuse and one of the other side is 7miles .

On substituting the respective values, we have;

[tex]\rm\implies 7^2+b^2=8^2 \\[/tex]

[tex]\rm\implies 49+b^2=64 \\[/tex]

[tex]\rm\implies b^2 = 64-49\\[/tex]

[tex]\rm\implies b =\sqrt{15}\\[/tex]

[tex]\rm\implies \red{b = 3.9 } \\[/tex]

Hence the distance between the swimming pool and the Library is 3.9 miles .

Niamh gets 16 pencils and Jack gets 32 pencils.

The ratio of 4:8 can be simplified to 1:2 by dividing both sides by 4. This means that for every one pencil Niamh gets, Jack gets two pencils.

To find out how many pencils each child gets, we need to divide the total number of pencils by the total number of parts in the ratio, which is 1 + 2 = 3.

So, each part of the ratio represents 48/3 = 16 pencils.

Therefore, Niamh gets 1 part, which is 16 pencils, and Jack gets 2 parts, which is 2 x 16 = 32 pencils.

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The given question is incomplete, the complete question is:

Ms. Adams shares out 48 pencils between Niamh and jack in the ratio 4:8, How many pencil does each child get ?

There are four numbers: 8, 15, 100 and 123.

Number is a mathematical object used to count, measure, and label. It is used in many different contexts, from everyday life to scientific research. Numbers can be represented in various forms, such as symbols, digits, and words. They are used to represent quantities, distances, time, and other concepts. Numbers can also be used to represent relationships, such as equations, which are statements that describe how two or more things are related.

To solve this problem, it is best to line the numbers up on the y axis or x axis. To multiply the numbers, start by multiplying the numbers on the y axis first. So, 8 x 15 = 120. Then, multiply the result by the number on the x axis which is 100. 120 x 100 = 12,000. Finally, multiply 12,000 by the last number on the x axis which is 123. 12,000 x 123 = 1,476,000. Therefore, the answer to the problem is 1,476,000.

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Answer:

The amount that would need to be deposited now to withdraw $2,400 at the end of each year for 10 years from an account that earns 4% compounded annually is $60,058.50.

Step-by-step explanation:

To determine how much would need to be deposited now to withdraw $2,400 at the end of each year for 10 years from an account that earns 4% compounded annually, we can use the present value formula for an annuity:

PMT x [(1 - (1 + r/n)^(-nt)) / (r/n)] = PV

Where:

PMT = the periodic payment

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the total number of years

PV = the present value (the amount to be deposited now)

In this case, we have:

PMT = $2,400

r = 4% = 0.04 (decimal)

n = 1 (compounded annually)

t = 10 years

Plugging these values into the formula, we get:

PV = $2,400 x [(1 - (1 + 0.04/1)^(-1*10)) / (0.04/1)]

PV = $2,400 x [(1 - 0.5537) / 0.04]

PV = $60,058.50

Therefore, the amount that would need to be deposited now to withdraw $2,400 at the end of each year for 10 years from an account that earns 4% compounded annually is $60,058.50.

Hope this helped! If it didn't, I'm sorry! If you need more help, ask me! :]

Answer:

x = 1, x = 7, and x = -1.

Step-by-step explanation:

o solve the polynomial equation x^3 - 7x^2 - x + 7 = 0, we can use a combination of synthetic division and factoring by grouping:

First, we need to find a root of the polynomial using the Rational Root Theorem. The possible rational roots of the polynomial are the factors of 7 (the constant term) divided by the factors of 1 (the leading coefficient), or ±1, ±7. By trying each of these values in the polynomial, we find that x = 1 is a root.

Using synthetic division, we can divide the polynomial by (x - 1) to obtain a quadratic equation:

 1 | 1  -7  -1  7

   |    1  -6  -7

   |_____________

   1  -6  -7  0

Therefore, (x - 1) is a factor of the polynomial, and we have:

 x^3 - 7x^2 - x + 7 = (x - 1)(x^2 - 6x - 7)

Now we need to solve the quadratic equation x^2 - 6x - 7 = 0. We can factor it as (x - 7)(x + 1) = 0, so the solutions are x = 7 and x = -1.

Therefore, the solutions to the original polynomial equation x^3 - 7x^2 - x + 7 = 0 are x = 1, x = 7, and x = -1.

The cοrrect answer is d. 11.5°, This is because the equatiοn 4x = 46 can be rearranged tο x = 46/4 = 11.5.

An equatiοn is a mathematical statement that describes the relatiοnship between twο values using an equal sign. It cοnsists οf twο expressiοns οn either side οf the equal sign, and the expressiοns must be equal in οrder fοr the equatiοn tο be true. Equatiοns are used tο sοlve prοblems and tο understand hοw different variables interact with each οther.

Fοr example, the equatiοn "2 + 2 = 4" is true because twο plus twο dοes in fact equal fοur. Equatiοns can alsο be used tο represent physical phenοmena, such as the equatiοn F = ma, which describes the relatiοnship between fοrce and mass. Equatiοns can be used tο sοlve many prοblems in mathematics, science, engineering, ecοnοmics, and οther fields.

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A line is breaking a segment into two making two angles, one of the angle is 46° which 4 times the other angle x. Solve for x

a. 4°

b. 4. 5°

c. 6°

d. 11. 5°

The sine of the angle passing through point E on the circle is given as follows:

sin(x) = 24/25.

The three trigonometric ratios are the sine, the cosine and the tangent, and they are defined as follows:

The equation of the circle is of x² + y² = 625, meaning that the radius, representing the hypotenuse, is of 25 units.

The center of the circle is of (0,0), hence the opposite side to the angle has length of 24 - 0 = 24 units, hence the sine of the angle is given as follows:

sin(x) = 24/25.

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Answer:99

Step-by-step explanation:

Answer: 99

Step-by-step explanation:

135 is 9 times of 15

To get the missing number, multiply 11 by 9,

11 x 9 = 99

The cosine function's positive coefficient ensures that the curve moves trigonometry downward from its highest point rather than upward from its lowest point.

The area of mathematics called trigonometry examines how triangle side lengths and angles relate to one another. The subject first came to light in the Hellenistic era, roughly in the third century BC, as a result of the use of geometry in astronomical investigations. The area of mathematics known as exact techniques deals with several trigonometric functions and possible computations using them. There are six common trigonometric functions in trigonometry. These go by the designations sine, cosine, tangent, cotangent, secant, and cosecant, respectively (csc). The study of triangle properties, particularly those of right triangles, is known as trigonometry. Consequently, studying geometry entails learning about the characteristics of all geometric shapes.

A trigonometric equation involving a cosine function with a positive coefficient looks like this:

y = 2cos(x) (x)

If this equation were graphed, a cosine curve with a period of 2 would be visible, oscillating between a maximum value of 2 and a minimum value of -2. The cosine function's positive coefficient ensures that the curve moves downward from its highest point rather than upward from its lowest point.

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An equation for the balance, b, in the student's savings account after n months is b = d - wn.

An equation is a mathematical or algebraic statement showing that two or more mathematical or algebraic expressions are equal or equivalent.

An equation is denoted using the equal symbol (=), which an algebraic expression lacks.

Mathematical expressions combine variables with numbers, constants, or values using mathematical operands.

The amount in the savings account = d

Monthly withdrawals = w

The period of withdrawals = n

Let the balance in the account after n months = b

Therefore, the balance after n months will be represented by the equation, b = d - wn.

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A student has a savings account with d dollars in it. The student plans to withdraw w dollars each month for n months. Enter an equation for the balance, b, in the account after n months.

The two plans will cost the same if Kira drives 90 miles over the weekend.

The two plans cost the same when Kira drives 90 miles, and the cost of each plan is $72.

To find the mileage for which the two plans cost the same and the cost at that mileage, you should set the cost expressions for both plans equal to each other. After that, you will solve for the mileage (x).

The steps to do this are as follows:Let the mileage be x

The cost of plan 1 (C1) is given by:

C1 = 45 + 0.30x

The cost of plan 2 (C2) is given by:

C2 = 0.80 x

To find the mileage at which both plans cost the same, set C1 equal to C2 and solve for x:

45 + 0.30 x = 0.80 x x (0.30 - 0.80) = - 45- 0.50 x = -45 x = -45/-0.50 x = 90

To find the cost when the two plans cost the same,

substitute x = 90 into one of the expressions for cost.

C1 = 45 + 0.30x = 45 + 0.30(90) = 45 + 27 = $72C2 = 0.80x = 0.80(90) = $72

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The exponential function that passes through the points (0, 14) and (3, 3024) is  [tex]$$y = 14\cdot 6^x$$[/tex]

To find the values of a and b in the exponential function [tex]$y=ab^x $[/tex]that goes through the given points (0, 14) and (3, 3024), we can use the following system of equations:

[tex]$\begin{align*}a\cdot b^0 &= 14 \a\cdot b^3 &= 3024\end{align*}[/tex]

Simplifying the first equation, we get a=14. Substituting this value into the second equation, we get:

[tex]14(b)^3=3024\\= b^3= 216\\= b=6[/tex]

Therefore, the exponential function that goes through the given points is:

[tex]$$y = 14\cdot 6^x$$[/tex]

We can check that this function satisfies both of the given points:

[tex]$\begin{align*}y &= 14\cdot 6^0 = 14 &&\text{when } x=0 \y &= 14\cdot 6^3 = 3024 &&\text{when } x=3\end{align*}[/tex]

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Answer:

(3, 8)

Step-by-step explanation:

Coordinate (-3, -8)

Reflect across the y-axis. The x will change to the opposite, and the y will remain the same. So, the coordinate is (3, -8)

Then reflect the result across the x-axis. The y will change to the opposite, and the x will remain the same. So, the coordinate is (3, 8)

So, the coordinate of the final point is (3, 8)

This implies that since (1/2) cup is equal to 2 quarter cups, the amount of soy sauce required for the recipe is 2 quarter cups.

By first determining the value of one unit and afterwards multiplying or dividing to determine the value of another unit, the unitary method is a mathematical strategy used to solve proportional problems. The "single unit" or "one unit" technique is another name for it. The unitary technique entails segmenting a problem into manageable pieces before determining the value of one unit of the specified quantity.

given

We must establish how many quarter cups are equal to (1/2) cup in order to quantify soy sauce using a quarter cup.

Starting with the knowledge that 1 cup is equal to 4 quarter cups, we can write:

4 quarter glasses equal 1 cup.

(1/2) cup is therefore equal to:

1/2 cup equals 1/2 * 4 quarter cups, or 1/2 cup equals 2 quarter cups.

This implies that since (1/2) cup is equal to 2 quarter cups, the amount of soy sauce required for the recipe is 2 quarter cups.

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The final component, either before or after C, is F.

Ingredients A through F must be combined (left goes first, right goes last). Also, we are aware that: Ingredients A and D are introduced in succession; B is added before to A; and F is not added immediately prior to or following C.

Which component should be inserted last?

The aforesaid issue is easily resolved by doing the following:

Ingredient labeling: A, B, C, D, E, and F

It is given,

Ingredient A is added before D in the order of adding ingredients A and D.

To A, B is added first.

F is no longer put immediately before or after C.

The leftover ingredients are C, E, and F.

F cannot come before or after C because of this.

C can therefore come after D.

component following C = E

Ingredient list = F

The complete question is-

The following table shows the order in which certain ingredients, labeled A through F, need to be mixed (left goes first, right goes last). Additionally, we know that: Ingredients A and D are added in consecutive steps; B is added before A; F is not added right before or after C. Which ingredient needs to be added last?

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Therefore, the value of sin105° is: = 0.7123

Value is a measure of the worth or importance of something. It is a subjective measure, as it is based on a person's individual beliefs, experiences, and values. Value can be seen in the monetary cost of a product or service, the quality of a product or service, the time spent on a task, or the amount of effort put into creating something. Value can also be intangible, such as the feeling of having achieved a goal or a sense of accomplishment. Value can be used to assess the worth of something, as well as to determine whether something is worth pursuing or investing in.

The value of sin105° can be determined by applying the compound angles formula. The formula states that the sine of an angle is equal to the product of the sine and cosine of the other two angles that make up the original angle.

For the angle 105°, the two other angles are 75° and 30°. Therefore, the sine of 105° can be calculated as follows:

sin105° = sin75° x cos30° + cos75° x sin30°

Using the values of sin75° and cos30° from a trigonometry table, we can calculate the sine of 105° as:

sin105° = 0.9659 x 0.5 + 0.2588 x 0.5

Therefore, the value of sin105° is:

sin105° = 0.7123

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Answer:

Below

Step-by-step explanation:

You want to divide 81 into (2+1 = 3) parts

   81 / 3 = 27   for each part

    2 parts would be  2 * 27 = 54    

          so 2:1    would be   54:27

[tex]\large\textsf{Answer:}[/tex]

[tex]\mathtt{x = 9.4}[/tex]

[tex]\mathtt{y = 14.3}[/tex]

[tex]\textsf{Please see below.}[/tex]

[tex]\large\textsf{Step-by-step explanation:}[/tex]

[tex]\textsf{For these problems, we are asked to solve for the missing variables.}[/tex]

[tex]\textsf{To start, we have \underline{2 exterior angles} and \underline{2 secant lines }that \underline{intersect} at a \underline{vertex}.}[/tex]

[tex]\boxed{\Large\textsf{What is a Vertex?}}[/tex]

[tex]\textsf{A \underline{Vertex} is a \underline{point of intersection} of \underline{2} or more \underline{lines.}}[/tex]

[tex]\boxed{\Large\textsf{What are Exterior Angles?}}[/tex]

[tex]\textsf{\underline{Exterior Angles} are \underline{angles} that are \underline{outside} of a circle.}[/tex]

[tex]\boxed{\Large\textsf{What are Secant Lines?}}[/tex]

[tex]\textsf{\underline{Secent Lines} are \underline{lines} that intersect a circle \underline{twice}.}[/tex]

[tex]\textsf{Because we have Intersecting Secants \underline{outside} of the circle, we should use this formula;}[/tex]

[tex]\mathtt{a(a+b)=c(c+d)}\\[/tex]

[tex]\textsf{Smaller segment is first, then the larger segment is inside the parentheses.}[/tex]

[tex]\underline{\textsf{Substitute values from 10;}}[/tex]

[tex]\mathtt{5(5+x)=6(6+6)}[/tex]

[tex]\underline{\textsf{Multiply:}}[/tex]

[tex]\mathtt{25+5x = 72}[/tex]

[tex]\underline{\textsf{Subtract 25 from both sides:}}[/tex]

[tex]\mathtt{5x = 47}[/tex]

[tex]\underline{\textsf{Divide by 5:}}[/tex]

[tex]\boxed{\mathtt{x = 9.4}}[/tex]

[tex]\textsf{Let's do the same for 11.}[/tex]

[tex]\underline{\textsf{Substitute values from 11;}}[/tex]

[tex]\mathtt{10(10+y)=9(9+18)}[/tex]

[tex]\underline{\textsf{Multiply:}}[/tex]

[tex]\mathtt{100+10y=243}[/tex]

[tex]\underline{\textsf{Subtract 100 from both sides:}}[/tex]

[tex]\mathtt{10y=143}[/tex]

[tex]\underline{\textsf{Divide by 10:}}[/tex]

[tex]\boxed{\mathtt{y=14.3}}[/tex]

The volume of the rectangular inflatable swimming pool is approximately 29.4 cubic yards.

The volume of an object is the amount of space it occupies in three dimensions, typically measured in cubic units. In this case, we're trying to find the volume of a rectangular pool that is 3 yards long, 14/5 yards wide, and 7/2 yards tall.

To find the volume of a rectangular object, we use the formula:

Volume = length x width x height

In this case, we can plug in the values we have:

Volume = 3 yards x 14/5 yards x 7/2 yards

To simplify the calculation, we can convert the fractions to decimals:

Volume = 3 yards x 2.8 yards x 3.5 yards

Volume = 29.4 cubic yards

In this case, the second decimal place is a 4, so we leave the digit in the first decimal place (9) as-is.

Therefore, we round our answer to 29.4 cubic yards to the nearest tenth.

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