Sam made a 70% on his test. If there were 80 questions on the test, how many did he get right?

Answers

Answer 1

Answer: He got 56 questions right.

Step-by-step explanation:

Answer 2

Answer:

Sam got 56 questions correct.

Step-by-step explanation:

If there were 80 questions on the test, sam got 56 correct in order to get a 70%.

To find this, you must find 70 percent of 80 questions. You first must turn 70% into a decimal, making it 0.70. You multiply this decimal by the 80 questions on the test. You then get 56. Meaning they got 56 right. I hope this helps!


Related Questions

if sales tax is 8%, what is the tax one a sale of $400.00
A. $3.20
B.$32.00
C.$320.00
D.$0.32

Answers

Answer:

b

Step-by-step explanation:

400*.08

32.00

Answer:

its B

Step-by-step explanation:

What is the value of x in this equation? 2x + 10 = -28

Answers

Answer:

X=19

Step-by-step explanation:

2x + 10 = -28

     -10     -10         Subtract 10 from both sides

divide both sides by 2

That gives you

X= 19

A triangle has a base of 16 inches and a height of 1/8 inches. What is the area?

Answers

Area of triangle = 1/2 x base x height.

Area = 1/2 x 16 x 1/8

Area = 8 x 1/8

Area = 1 square inch

The area of the triangle calculated using the area formula is 1 in²

Given the Parameters :

Base of triangle = 16 inches

Height of triangle = 1/8 inches

Area of a triangle can be obtained using the relation :

Area = 1/2 × base × height

Substituting the Parameters into the equation :

Area of triangle = 1/2 × 16 × 1/8 = 1 in²

Therefore, the area of the triangle is 1 in²

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8. To which subsets of the real numbers does the number 13 belong?

Answers

Answer:

irrational numbers

Step-by-step explanation:

8.

sqrt(13) is not a whole number, a natural number, an integer, or a rational number.

Answer: irrational numbers

Review the steps in the derivation of the tangent sum identity. The steps are not in order.

A 2-column table with 4 rows. Column 1 has entries 1, 2, 3, 4. Column 2 has entries StartFraction sine (x + y) Over cosine (x + y) EndFraction, StartStartFraction StartFraction sine (x) cosine (y) Over cosine (x) cosine (y) EndFraction + StartFraction cosine (x) sine (y) Over cosine (x) cosine (y) EndFraction OverOver StartFraction cosine (x) cosine (y) Over cosine (x) cosine (y) EndFraction minus StartFraction sine (x) sine (y) Over cosine (x) cosine (y) EndFraction EndEndFraction, StartFraction tangent (x) + tangent (y) Over 1 minus tangent (x) tangent (y) EndFraction, StartFraction sine (X) cosine (y) + cosine (x) sine (y) Over cosine (x) cosine (y) minus sine (x) sine (y) EndFraction.

Which list shows the steps in the correct order?

I --> II --> IV --> III
I --> IV --> II --> III
III --> I --> II --> IV
III --> I --> IV --> II

Answers

Answer:

The answer is B: I  IV II  III

Step-by-step explanation:

Just did it

The sequence for the derivation of tangent sum identity is option I --> IV --> II --> III.

What is trigonometric identity?

The trigonometric identities is the relationship between the different trigonometric ratios. These trigonometric identities are the basic formulae that are true for all the values of the reference angle.

For the given situation,

The derivation for the tangent sum identity is given in the table below.

The derivation follows the steps,

[tex]\frac{sin(x+y)}{cos(x+y)}[/tex]

we know that, [tex]sin(x+y) = sinx cosy + cosx siny[/tex] ,

[tex]cos(x+y)=cosxcoxy - sinxsiny[/tex] and

[tex]\frac{sinx}{cosx}=tanx[/tex]

⇒ [tex]\frac{sinxcosy + cosxsiny}{cosxcosy-sinxsiny}[/tex]

Divide each term by [tex]cosxcosy[/tex]

⇒ [tex]\frac{\frac{sinxcosy}{cosxcosy} +\frac{cosxsiny }{cosxcosy} }{\frac{cosxcosy}{cosxcosy} -\frac{sinxsiny}{cosxcosy} }[/tex]

⇒ [tex]\frac{tanx+tany}{1-tanxtany}[/tex]

Hence we can conclude that the derivation of tangent sum identity is option I --> IV --> II --> III.

Learn more about trigonometric identity here

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What is the opposite of -40 ?

Answers

Answer:

positive 40, just regular 40

Step-by-step explanation:

Positives and negatives are opposites


Andrea jumped 5 times every 45 minutes. At that rate, how many
would she jump in 54 minutes?
bo optional

Answers

Answer:

6 times

Step-by-step explanation:

If Andrea jumps 5 times every 45 minutes, she will jump 1 time every 9 minutes. 54 divided by 9=6 times. Hope it helps!

Symmetry please hurry

Answers

i believe it is both but im not 100%

11. What is the difference between a theorem and a postulate?

Answers

Answer:

A postulate is a statement that is assumed to be true based on basic geometric principles. A theorem is a mathematical statement that can and must be proven to be true.

Step-by-step explanation:

www.ck12.org

Answer:

A thorem is true and can be proven true vs a postulate is guessed true without any evidence.

Step-by-step explanation:

A theorem is a group of statements that are used to prove something else, whereas a postulate is a statement that is not proved but is true through reasoning.

9. If the area of a rectangle measures 20 square inches, the side lengths
must be 4 inches and 5 inches.

Answers

Answer:

True

Step-by-step explanation:

The given statement is true.

Area of a rectangle is length times width.

A rectangle with the side length of 4 and 5 inches would have an area of 20 square inches.

[tex]A=l*w\\\\A=4*5\\\\A=20[/tex]

Hope this helps.

Answer:

False

Step-by-step explanation:

There can be two sets of side lengths 4, 5 inches and 2, 10 inches.

A store sells ice cream with assorted toppings. They charge $3.00 for an ice cream, plus 50 cents per ounce of toppings. How much does an ice cream cost with 4 ounces of toppings?

Answers

Answer:

5 dollars

Step-by-step explanation:

an ice cream is 3 dollars and 1 ounce of toppings is 50 cents 0.5 dollars times 4 equals 2 dollars. so 3+2 equals 5

Answer:

$5.00 I believe.

Step-by-step explanation:

(100 POINTS AND BRAINLIEST)
Jenna works in an ice cream shop. When she starts her shift the tub of chocolate ice cream is 2/3 full. When she finishes her shift 6 1/2 h later, there is only 1/6 of the tub left. What was the average hourly change in tub fullness?

IMMEDIATE PLEASE.

Answers

Answer:

[tex]-1/13\text{ tub per hour}[/tex]

Step-by-step explanation:

First, let's find how much of the tub was used within the time.

We know that the tub was 2/3 full was Jenna started.

And it was only 1/6 full when Jenna ended.

Therefore, to find the amount used, we can subtract 1/6 from 2/3. So:

[tex]u=\frac{2}{3}-\frac{1}{6}[/tex]

Make a common denominator. Change 2/3 to 4/6 by multiplying both layers by 2. So:

[tex]u=\frac{4}{6}-\frac{1}{6}[/tex]

Subtract and reduce:

[tex]u=\frac{3}{6}=\frac{1}{2}[/tex]

Therefore, 1/2 of the tub was used after 6 1/2 hours.

To find the average hourly change, we will put the amount used over the amount of hours. 6 and 1/2 hours is the same as 13/2 hours. Therefore, the hourly change will be:

[tex]c=\frac{\frac{1}{2}}{\frac{13}{2}}[/tex]

Remember when dividing fractions, we:

1) Flip the divisor (the second number).

2) Change the division sign to a multiplication sign.

3) Multiply.

So:

[tex]c=\frac{1}{2}\div\frac{13}{2}\\\Rightarrow c=\frac{1}{2}\times \frac{2}{13}[/tex]

Multiply straight across and reduce:

[tex]c=\frac{2}{26}=\frac{1}{13}[/tex]

However, since we are using up the tub, our rate will be negative. Therefore:

[tex]c=-\frac{1}{13}[/tex]

Therefore, the average hourly rate was -1/13 tub per hour.

This means that after each hour, 1/13 of the tub will be used up.

Edit: Corrected Wrong Answer

Answer: -1/13 of a tub per hour

Step 1: Subtract.

2/3 - 1/6 = ?

Step 2: Find the common denominator.

4/6 - 1/6 = 3/6.

Step 3: Simplify the fraction.

3/6 = 1/2

Step 4: Put 1/2 over 13/2.

1/2 over 13/2

Step 5: Flip divisor around. Then divide.

1/2 ÷ 13/2

Step 6: Multiply.

1/2 × 2/13 = 2/26.

2/26 reduced = 1/13.

Since it was used, now it is -1/13

Answer = -1/13 of a tub per hour

Mrs Ross runs a tutoring business she charges $35 an hour plus a $50 application fee her competitor Mrs brand charges $45 an hour plus $25 application fee right an equation that represent the situation when the cost to be tuned by Mrs Ross and Mr brand is the same

Answers

26 that the answer I think

Help Me please I hate math:(

Answers

Answer:

What is the question?

Step-by-step explanation: .

Answer:

WHATS THE QUESTION

Step-by-step explanation:

What is 2 /34 × 4/5 plsssss help

Answers

Answer:

0.04705882352

Step-by-step explanation:

Yeah, I don't really have an explanation, sorry. I guess you just turn them both into decimals and multiply afterwards.

2/34 x 4/5 = 4/85, or 0.04705882...

How do I convert 0.75 to a frction in simplist form?

Answers

3/4 because .75= 3/4

Answer:

Ok so the fraction is 3/4

I'm letting google answer the other question though.

Step-by-step explanation:

Tammy can type 130 words in 5 minutes. How many words can she type in 20 minutes?

Answers

Answer:

520 words

Step-by-step explanation:

Do 130 words divided by 5 minutes to get 26 words per minute.

Then you do 26 times 20 to get the answer of 520

hope this helps!!

Answer:

520 words.

Step-by-step explanation:

We can multiply the 5 minutes by 4 to find 20, so also multiply 130 by 4, which would result in 520.

Which inequality has the solution set shown on the graph?

a.-54n 1080
c.594 > -11n
d.594 < -11n

Answers

Answer:

594 > -11n

Step-by-step explanation:

the answer is c lol

Answer:

The answer is C

Proof:

Step-by-step explanation:

what are 3 points you can use to solve the equation:
-x-2y=8

Answers

Answer:

no idea

Step-by-step explanation:

6x+1/2(12x-8)=3x-31 what is the answer?

Answers

Answer:

x=−3

Step-by-step explanation?

i did the math

which of the following expression is NOT equivalent to -17 -(-5)?

A: 5+(-17)
B: -17-5
C:-17+5
D:-12

Answers

Answer:

The answer is B.

Reasoning:

-17 - (-5) = -12

A. 5 + (-17) = -12✔

B. -17 - 5 = -22 ✖

C. -17 + 5 = -12 ✔

D. -12 ✔

Answer:

B: -17+5

Step- by- step explanation

PLease please please help quick

Answers

Answer:

B

Step-by-step explanation:

Same as last. multiple 8 into the entire equation.

Answer:

-80x+28y-56

4(-20x+7y-14)

Step-by-step explanation:

9. The mass of a dust particle is 0.000000000753 kg, which can be written as 7.53 x 100
kg in scientific notation. What is n?

Answers

Answer:

7.53 x 10²

Step-by-step explanation:

10² two time the 10 is 100

Answer:

Uuuuuuuh. What is n? There's no n in your question.

Step-by-step explanation:

Also that scientific notation equation there is false. It would be 7.53x10 to the 10th power.

d =−12 is one of two solutions of the equation |d+ 9|=3
true or false

Answers

Let's find out by replacing d with -12. Then we'll simplify the left side

|d+9| = 3

|-12+9| = 3 .... replace d with -12

|-3| = 3

3 = 3

Since we get a true statement, ie the same thing on both sides, this means the original equation is true when d = -12.

Therefore d = -12 is one of the two solutions to the original equation.

Answer: True

Answer:

True

Step-by-step explanation:

We can check this by substituting x = - 12 into the left side of the equation. If the result is equal to the right side then it is a solution.

| - 12 + 9 | = | - 3 | = 3 = right side

Thus x = - 12 is one of the solutions to the equation.

[ The other solution is x = - 6 ]

can someone please answer me this question ASAP!!!!
Point A is located at negative 4 over 6 and point B is located at negative 1 over 6. What is the distance between points A and B?

negative 4 over 6 minus negative 1 over 6 = negative 3 over 6; therefore, the distance from A to B is absolute value of negative 3 over 6 equals negative 3 over 6 units
negative 4 over 6 minus negative 1 over 6 = negative 3 over 6; therefore, the distance from A to B is absolute value of negative 3 over 6 equals 3 over 6 units
negative 4 over 6 plus negative 1 over 6 = negative 5 over 6; therefore, the distance from A to B is absolute value of negative 5 over 6 equals 5 over 6 units
negative 4 over 6 plus negative 1 over 6 = negative 5 over 6; therefore, the distance from A to B is absolute value of negative 5 over 6 equals negative 5 over 6 units
Question 7(Multiple Choice Worth 1 points)

Answers

3/6 because absolute value of any number has to be positive and you have to subtract the 2 answers to find the distance

1859 divided by 45 eeeee

Answers

Answer:

41.3111111111

Step-by-step explanation:

1859/45 = 41.3111111111

Answer:

41.31 with the 1 repeating.

Step-by-step explanation:

The HCF of two numbers is 16 and their product is 3072. Find their LCM

Answers

Answer:

192

Step-by-step explanation:

16 × LCM = 3072

LCM = 3072 ÷ 16

LCM = 192

(1 point) The linear function y=3x+30 models the average cost of a haircut in a certain city, where y, is the average price of a haircut x years after 2000. Find the slope for the model. Then describe what this means in terms of the rate of change in the average cost of a haircut over time.

Answers

Answer:

3 is the slope

Step-by-step explanation:

Mathematically, a linear function can be represented in the form;

y = mx + c

where m represents the slope and c is the y-intercept of the function.

In the equation given in the question above;

The slope of the equation is 3

What this means is that, the average rate of change between two points in the plot of the linear function is 3

Mathematically speaking, we mean that given two years and their corresponding average haircut prices, then the average rate of change between these two years on the plot is 3

Find the missing side in the similar figure below

Answers

Answer:

30

Step-by-step explanation:

20 divided by 12 is 5/3.

18x5/3 is 30, meaning the missing side is 30.

The value of x from the diagram is 30

Similar shapes

These are shapes with the same sides and angles

From the given figures, we are to get the value of x as shown.

Using the similarity theorem;

18/12 = x/20

Cross multiply

12x = 18 * 20

12x = 360

x = 30

Hence the value of x from the diagram is 30

Learn more on similar shapes here: https://brainly.com/question/2644832

What are the transformations to the graph compared to the parent function y=√(x)?

Answers

The answer is D, the bottom answer
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