Find the sum of 9r^2+4r-7) + (3r^2-3r

Answers

Answer 1

Answer

12r2 +r − 7

Step-by-step explanation:


Related Questions

What type of equation is -1/2y=1/2x+5

Answers

Answer:

Linear Equation: A linear equation is an algebraic equation. · 2. Polynomial Equation: · 3. Quadratic Equation: · 4. Trigonometric equation: · 5. Radical Equation:

Step-by-step explanation:

Which multiplication expression is equal to 2/5÷2/3?

Answers

Answer:

2/5 × 3/2

I hope this helps!

Write an inequality that represent the following sentence and SOLVE. Be sure to show work on binder paper for credit.
the sum of y and 8.1 is less than 24.
Solution after solving:

Answers

Answer:

y+8.1<24

Step-by-step explanation:

Sum of= addition

y+8.1

less than is <

<24

The product of two numbers is 16/3 if one of the number is 48/5 what is the other one?

Answers

Answer:

The other number is 5/9.

Step-by-step explanation:

16/3 = 48/5 * x

x = 5/9

6. What is the equation in slope-intercept form for the graph shown?
A) y + x = −2
B) y = 2x + 1
C) y – 2x = 1
D) y = –2x + 1

Answers

d, the rise over run method -2/1 and the y intercept is 1

Divide 3 divided by 2/5

7

7 1/5

7 1/2

8

Answers

uhhh 0.3 or 1.2 lol hope this helps

Anthe answer is x times (6)7x10)-1(3)

Step-by-step explanation:

Rewrite the expression in the form b^n

Answers

Answer:

b 15/4

Step-by-step explanation:

-4(X + 3) s-2 - 2x
What is the solution?

Answers

The answer would be -6x +s -14

Which equation is quadratic in form?
2(x + 5)2 + 8x + 5 + 6 = 0
x6 + 6x4 + 8 = 0
7x6 + 36x3 + 5 = 0
4x9 + 20x3 + 25 = 0

Answers

Answer:

I think it's the first one... but I'm not pretty sure.

Answer:

C

Step-by-step explanation:

edge 2020

Which graph shows a proportional relationship between the number of hours of renting a boat and the total amount spent to rent the boat?

Answers

Answer:

Its B

Step-by-step explanation:

You work in a hospital, and instructions for an instrument state that it should be cleaned in the
sterilizer for two hours. The sterilizer requires cleaning time be entered in minutes. How many
minutes do you set for the sterilizer?
A. 90
B. 120
C. 180
D. 240
E. 500

Answers

Answer:

B

Step-by-step explanation:

120/60=2

2 hours

The time required in minutes to set the sterilizer is 120. The correct option is B.

What is an expression?

The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.

Given that you work in a hospital, instructions for an instrument state that it should be cleaned in the sterilizer for two hours.

The time in minutes will be calculated as:-

Time = 2 hours

Time = 2 x 60 minutes

Time = 120 minutes

Therefore, the time required in minutes to set the sterilizer is 120. The correct option is B.

To know more about an expression follow

https://brainly.com/question/11096532

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decimals that equals 1

Answers

Answer:

0.01

Step-by-step explanation:

If x + y = 5, then x =
1. 5y
2. 5+y
3. 5 - y

Answers

Heyyy! The answer should be x=5-y

Tristan and two of his friends purchased tickets to a school play. Tristan paid for all the tickets with a $50.00 bill and received $23.00 in change. If Tristan used a coupon for 25% off, what was the original price for one ticket?

-$6.75
-$9.00
-$12.00
-$27.00

Answers

Answer: 27.00

Step-by-step explanation:

$50 - $23 = $27

Answer:

$27.00

Step-by-step explanation:

"D"

What is the equation of the line that passes through the point (4, -8) and has a
slope of -12

Answers

The equation is Y=-12x+40

Write an equation for the line that goes through point (-1,4) and is parallel to the
line y = 2x - 9

Answers

Answer:

y = 2x + 6

slope = 2

y intercept = 6

question below please answer

Answers

Answer:

the awenser  is D

Step-by-step explanation:

took the test lolz

Find the equation of the line that passes through the pair of points. Write your answer in slope-intercept form.
(−2, −4), (2, 0)

Answers

Answer:

y = x - 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define

Point (-2, -4)

Point (2, 0)

Step 2: Find slope m

Substitute:                    [tex]m=\frac{0+4}{2+2}[/tex]Add:                              [tex]m=\frac{4}{4}[/tex]Divide:                          [tex]m=1[/tex]

Step 3: Find y-intercept b

Substitute in m:                    y = x + bSubstitute in point:               0 = 2 + bIsolate b:                               -2 = bRewrite:                                 b = -2

Step 4: Write linear equation

Slope-Intercept Form:   y = x - 2

And we have our final answer!

1. Write an expression for 8 less than 2
times a number.

Answers

Answer:

8<2x

Step-by-step explanation:

Answer:

8<2x

Step-by-step explanation:

I hope this helped! :D

graph 3x-2y=6 how do you graph this in algebra

Answers

Answer:

I don't have algebra but I suggest looking it up and it might show you at the very top.

Step-by-step explanation:

Hope this helps you:)

SOLVE 4x9( 12/(5-2)^3)+9

Answers

Answer:

16x^9/9+9 should be the answer

Step-by-step explanation:


2(5x−2)− 2x -2 =34
Solve for x

Answers

X equals five my guy

10x+7y=-3 and 5x-y=3​

Answers

Step-by-step explanation:

{

x

=

1

y

=

4

Explanation:

Take a look at your starting system of equations

{

5

x

+

y

=

9

10

x

7

y

=

18

Notice that if you multiply the first equation by

(

2

)

, and add the right-hand sides and the left-hand sides of the equations separately, you can eliminate the

x

-term.

This will leave you with one equation with one unknown,

y

.

{

5

x

+

y

=

9

(

2

)

10

x

7

y

=

18

{

10

x

2

y

=

18

10

x

7

y

=

18

---------------------------------------------------

10

x

2

y

+

10

x

7

y

=

18

+

(

18

)

9

y

=

36

y

=

(

36

)

(

9

)

=

4

Now use this value of

y

in one of the two original equations to find the value of

x

5

x

+

(

4

)

=

9

5

x

=

5

x

=

5

5

=

1

For all numbers x, f(x) = 3x + 3. What is the value of
f(3)?

Answers

12
Plug three into the equation 3(3) + 3 =12

Suppose a life insurance company sells a ​$190,000 ​one-year term life insurance policy to a 19​-year-old female for ​$290. The probability that the female survives the year is 0.999563. Compute and interpret the expected value of this policy to the insurance company.

Answers

Answer:

The expected value of this policy to the insurance company is $206.97

Step-by-step explanation:

Probability that Person doesn't die = 0.999563. Profit = Revenue - Cost; Profit = $290 - 0 = $290

Probability that Person dies = 1 - 0.999563 = 0.000437. Profit = Revenue - Cost; Profit = $290 - $190,000 = -$189,710

Expected Value E(X) = ∑xp(x)

E(X) = $290*(0.999563) + (-$189,710* 0.000437)

E(X) = $289.87327 - $82.90327

E(X) = $206.97

Thus, the expected value of this policy to the insurance company is $206.97

I really need help with this one

Answers

Answer:

a=70 b=.16 c=350

Step-by-step explanation:

50 messages is 8 dollars

Witch variable represents the y intercept

Answers

Answer:

B

Step-by-step explanation:

Y=mx=b

m= slope

b= y- intercept

x&y are variables

Eric went on a 11,150km trip. he travelled the firsy 7574 kilometre by train and the rest of the trip by car. if he took 12 days to complete the second part of his trip by car, what was the mean distance he drive each day ?

Answers

Answer:

298

Step-by-step explanation:

please make brainest thx

How many 7/8-teaspoon servings are in 1/4 of a teaspoon of sugar? Yor anwer needs to be in farction in simplest form.

Answers

3/4 and then you have 1/8 left
Plz mark brainliest

What is the factored form of x3 + 216?

A.
(x − 6)(x2 + 6x + 36)
B.
(x + 6)(x2 − 6x + 36)
C.
(x + 6)(x2 − 12x + 36)
D.
(x + 6)(x2 + 12x + 36)

Answers

Answer:

now using the formula (a-b) (a2+ab+b2)=a3-b3

=>x3-63

x3-216#answer

The factor of the cubic polynomial x³ + 216 will be (x + 6) and (x² – 6x + 36). Then the correct option is B.

What is a factorization?

It is a method for dividing a polynomial into pieces that will be multiplied together. At this moment, the polynomial's value will be zero.

The cubic polynomial is given below.

⇒ x³ + 216

Then the cubic polynomial is written as,

⇒ x³ + 6 × 6 × 6

⇒ x³ + 6³

We know that the formula of a³ + b³ is given as,

a³ + b³ = (a + b)(a² – ab + b²)

Compare the expression, we have a = x and b = 6. Then the expression will be

x³ + 6³ = (x + 6)(x² – 6x + 6²)

x³ + 6³ = (x + 6)(x² – 6x + 36)

The factor of the cubic polynomial x³ + 216 will be (x + 6) and (x² – 6x + 36).

Then the correct option is B.

More about the factorization link is given below.

https://brainly.com/question/6810544

#SPJ5

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