There are 10 students. 30% of the students returned their calculators at the end of class. How
many students returned their calculator at the end of class?

Answers

Answer 1
3 because 10% of 10 is 1 times by 3 fir 30% is 3 students
Answer 2
Answer: 3

We can find 10% by dividing the number of students by 10.
10/10 = 1

We need to work out 30%, and we already have 10% so we just multiply 10% by 3.
1 x 3 = 3
So 30% = 3

Therefore, 3 students retuned their calculator at the end of class.

Related Questions

3 kitchen assistants can prepare 10kg of vegetables in 30 minutes. How long would it take 30 assistants to prepare the same amount?​

Answers

Answer:

It will take  4.5  minutes.

Step-by-step explanation:

on a family trip, albert counted two groups of four motorcycles and an additional five solo motorcycles. Write an expression for the number of motorcycles albert saw. then find the number of motorcycles.

Answers

2(4)+5 Albert encountered 13 motorcycles.

A rectangle has a length of 16 inches and the length of the diagonal is 20 inches. What is the width of the rectangle

Answers

Answer:

12 inches

Step-by-step explanation:

1. The diagonal is the hypotenuse of the right triangle.  so since we know one side length, we can figure out the other side length

1. 16^2 + x^2= 20^22. 256 + x^2=4003. x^2=1444. [tex]\sqrt{144}[/tex] = 12

Look at the picture for answer choices

Answers

Its A, the first one

Pls help I need it now pls

Answers

Answer:

it would be D because x is based off of the x axis so when it moves left to right. And y is y axis so it moves up and down.

Step-by-step explanation:

Consider the numbers z= 2 + 5i, w = -3- 2i, and u=-1+2i.
z+w is equal to -1+vi
w-u is equal to - 4i
u + w is equal to -4 -

Answers

Answer:

3, 2, 0

Step-by-step explanation:

trust me

The resultant value of vectors are:

1. z + w = -1 + 3i.

2. w - u= -4 - 4i

3. u + w = -4.

Given:

z = 2 + 5i

w = -3 - 2i

u = -1 + 2i

1. z + w:

Adding the real and imaginary parts separately gives

(2 + 5i) + (-3 - 2i) = (2 - 3) + (5 - 2)i

                          = -1 + 3i

Therefore, z + w is equal to -1 + 3i.

2. w - u:

Subtracting the real and imaginary parts separately gives

(-3 - 2i) - (-1 + 2i) = (-3 + 1) + (-2 - 2)i

                          = -4 - 4i

Therefore, w - u is equal to -4 - 4i.

3. u + w:

Adding the real and imaginary parts separately gives

(-1 + 2i) + (-3 - 2i) = (-1 - 3) + (2 - 2)i

                           = -4

Therefore, u + w is equal to -4.

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Find the slope of 5y-x=2​

Answers

Answer:

Slope is 1/5

Answer: -1/5

Step-by-step explanation: here!

Please don't steal points I need help :(

Answers

Answer:

I think its C

Step-by-step explanation:

Find the value of x in the equation below.
9.5 = x/5

Answers

Answer:

47.5

Step-by-step explanation:

you would do 5 x 9.5 to find the answer for x

There are 23 students in ms day”s class. Only 17 students are present today use the model to find A the number of students that are absent

Answers

Answer:

6 students are absent.

The first platform of the Eiffel Tower is 2,280 inches above the ground. The second platform is 376 feet above the ground. How many yards separate the first platform from the second platform?​

Answers

Answer:

62.0496 yards separate the first platform from the second platform

Step-by-step explanation:

We have to make the conversion of both units to yards.

Each feet has 12 inches.

Each inch is 0.0278 yards.

The first platform of the Eiffel Tower is 2,280 inches above the ground.

So

2280*0.0278 = 63.384 yards above the ground.

The second platform is 376 feet above the ground.

So

376*12*0.0278 = 125.4336 yards above the ground

How many yards separate the first platform from the second platform?​

125.4336 - 63.384 = 62.0496

62.0496 yards separate the first platform from the second platform

Using either substitution or elimination method, solve the system of equations that consists of 8x+y= -16 and -3x+y=-5 Your solution will be a coordinate of integers. ​

Answers

Answer:

x= -1

y= -8

Step-by-step explanation:

Solve for y in 8x + y = -16

y = -16 - 8x

Substitute y = -16 - 8x into -3x + y = -5

-11x - 16 = -5

Solve for x in -11x - 16 = -5

x = -1

Substitute x = -1 into y = -16 - 8x

y = -8

Therefore,

x= -1

y= -8

Answer:

(-1, -8)

Step-by-step explanation:

SUBSTITUTION METHOD:

8x + y = -16-3x + y = -5

Solve for y in the first equation by subtracting 8x from both sides.

y = -16 - 8x

Substitute this value for y into the second equation.

-3x + (-16 - 8x) = -5

Remove the parentheses and simplify.

-3x - 16 - 8x = -5

Combine like terms.

-11x - 16 = -5

Add 16 both sides of the equation.

-11x = 11

Divide both sides of the equation by -11.

x = -1

Substitute this value for x into either equation (I'm using the first equation).

8(-1) + y = -16

Multiply and simplify.

-8 + y = -16

Add 8 to both sides of the equation.

y = -8

ELIMINATION METHOD:

8x + y = -16-3x + y = -5  

Subtract the second equation from the first equation to "cancel" the y-variable.

11x = -11

Divide both sides of the equation by 11.

x = -1

Substitute this value for x into either equation (I'm using the second equation).

-3(-1) + y = -5

Multiply and simplify.

3 + y = -5

Subtract 3 from both sides of the equation.

y = -8

The solution to this system of equations is (-1, -8).

.Given the assignment categories and weights listed below, what overall grade should the student get in the class? Round your answer to one decimal place. please show me how you got this and what steps u did please hurry
Weight. Average
Homework30%. 95
Projects 15%. 80
Tests 50% 77
Attendance 5% 50

Answers

Answer: The answer of your over all grade is 81

Step-by-step explanation:

You do the % then you add them together.

like in this picture  

Tobias bought four video games for $34. 10, $25.50, $13.25, and $9.99,
dileTobias spend?
How much money
A. $172.75
B. $99.40
C. $82.84
OD. $61.74

Answers

Answer:

C. 82.84

Step-by-step explanation:

What percent of 30 is 45?
Please

Answers

Answer:

150

Step-by-step explanation:

Answer:

answer is 66.67

Step-by-step explanation:

30: 45*100=

(30*100):45=

3000:45=66.67

What is the volume of this cube? If it only shows one edge that says 0.5m?

Answers

Answer:

0.125 or about 0.13

Step-by-step explanation:

Length times width times height.

Simplify the rational Expression

Answers

Answer:

[tex]\frac{x^2+2x}{x-3}[/tex]

Step-by-step explanation:

We need to factor out numerator and denominator in order to simplify the rational expression by cancelling  common factors.

Numerator :  x^3 - 4 x = x (x^2 - 4) = x (x - 2) (x + 2)

Denominator (factoring by grouping):

x^2 - 5 x + 6 = x^2 - 3 x - 2 x + 6 = x (x - 3) - 2 (x - 3) = (x - 3) (x - 2)

Then we can cancel out the common factor (x - 2) in both numerator and denominator, leading to:

x (x + 2) / (x - 3) = (x^2 + 2)/ (x-3)

[tex]\frac{x^2+2x}{x-3}[/tex]

how many solutions does -3x + 3y =4 -x + y =3 have?
-3x + 3y =4
-x + y =3
0
1
2
infinite

Answers

Answer:

0

Step-by-step explanation:

-3x + 3y = 4

-x + y = 3

3y = 3x + 4

y = x +4/3

-x + (x+4/3) = 3

4/3 = 3

This is an equality there for no solution.

How many solutions does this equation have? 6x - 8 = -4x - 12*
No Solution
Infinitely Many Solutions
1 Solution

Answers

Answer:

1 solution

Step-by-step explanation:

find the surface area

Answers

Answer:

Surface area = 207 cm²

Step-by-step explanation:

Surface are of triangular prism = 2×BA + P × H

Base Area (BA) = ½*bh

b = 8 cm

h = 9 cm

BA = ½*8*9 = 36 cm²

Perimeter of triangular base (P) = 8 + 9 + 10 = 27 cm

Height for prism (H) = 5 cm

Surface area = 2 × 36 + 27 × 5 = 72 + 135

Surface area = 207 cm²

Traci starts running on a trail and can run a mile in 10 minutes. Hannah starts running from the same spot 20 minutes after Traci. If Hannah can run a mile in 8 minutes, how many miles would she have to run to catch up with Traci?

Answers

Answer:

Yoni will catch Traci after 20 minutes.

Step-by-step explanation:

 

Can you help me put these in order please

Answers

Step-by-step explanation:

8.4 - 8.41 - 8.485 - 8.538 - 8.55 - 8.566

Answer: least to greatest

8.4, 8.41, 8.485, 8.538, 8.55, 8.566

least to greatest

Which expressions are equivalent to the perimeter of the shape? How do you know?

a. x + 3 + 3x + 1
b. 2x + 4 + x
c. 4x + 4
d. 2x + 2 + 2x + 2

Answers

x+1+1+x+x+1+x+1
4x+4

The answer is c.

The expressions are equivalent to the perimeter of the shape is c. 4x + 4

What is perimeter?

The perimeter of a form is the space surrounding its edge. Find the perimeter of various forms by summing the lengths of their sides.

Perimeter of the rectangle = 2(length+width)

Given the paramters are;

length  = x + 1

W = x + 1

Perimeter of the shape= x+1+1+x+x+1+x+1

Perimeter = x+1+1+x+x+1+x+1

= 4x + 4

This is the expression equivalent to the perimeter of the shape

The answer is c.

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A recipe uses 5 cups of milk to make 20 servings. If the same amount
of milk is used for each serving, how many servings can be made from
two pints?
1 gallon 4 quarts
1 quart 2 pints
1 pint 2 cups
1 cup = 8 fluid ounces
Before you try that problem, answer the question
below.
How many cups will you need to find the number
of servings for?

Answers

Answer:

16 servings

Step-by-step explanation:

The recipe would use 2 pints or 4 cups of milk. 1 cup of milk is equal to 4 servings (20/5 = 4), so 4 cups would make 16 servings.

1 pint is equal to 2 cups so 2 pints will be 4 cups.

The number of servings 2 pints will make is 16 servings.

What is a unit rate?

A unit rate means a rate for one of something.

It is written as a ratio with 1 as the denominator.

We have,

5 cups of milk = 20 servings

Multiplying 1/5 on both sides.

1/5 x  5 cups of milk = 1/5 x 20 servings

This means,

1 cup of milk = 4 servings

We know that,

1 pint = 2 cups

Multiplying 2 on both sides

2 x 1 pints = 2 x 2 cups

2 pints = 4 cups

If,

1 cup = 4 servings

4 cups = 4 x 4 servings
4 cups = 16 servings

Thus the number of servings 2 pints will make is 16 servings.

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I need help with this what is the awnser

Answers

Answer:

x = 23

Step-by-step explanation:

For this figure, we know we are dealing with a 90 degree angle since there is a small square in the figure, therefore we can set up the equation...

65 + (x + 2) = 90

In this sense, the parenthesis are unnecessary.

67  + x = 90

-67         -67

x = 23

Hope this helps!

:)

How to find distance on a triangle like the diagonal part with the Phyhagorean Theorem?​

Answers

H2+P2+B2 is the answer of this question

find the volume of the rectangular prism.

Answers

Answer:

176.3

Step-by-step explanation:

have a nice day! :D.

l*w*h= volume

4.3*5*8.2= 176.3

176.3 cubic mm is the volume

Select the correct answer
If h is a function and -7 is an element in its domain, then which of the following statements correctly describes the expression (-7)?
The expressiurhit-7). represents the output of h corresponding to the input of -7.
The expression (-7) represents that -7 is the only element in the domain of h.
The expression h(-7) represents the input of h corresponding to the output of -7.
The value of h should be multiplied by -7 to evaluate the expression
Reset
Submit

Answers

Answer:

The Expression h(-7) represents the output of h corresponding to the input of -7

Step-by-step explanation:

Answer:

C. The expression h(-7) represents the output of h corresponding to the input of -7.

Step-by-step explanation:

In a function written in function notation, the term h(x) represents the output value while x represents the input value, and h is the name of the function.

So, the expression h(-7) represents the output of h corresponding to the input of -7.

Jose decides to go to the local amusement park. He pays $12.50 for an admission ticket and $4.50 per ride. The total amount that Jose pays for admission and rides is $ 71. Which equation can be used to determine the total number of rides, r, that Jose went on?

Answers

Answer:

Your answer is B. 4.50r + 12.50 = 71.

HELP ME FAST PLSSS<3

A bottle of juice states that a serving is 1/2 cup. How many servings are in a 2-pint container? (one pint= 2 cups)

Answers

Answer: 8 servings

Step-by-step explanation:

1/2 cup + 1/2 cup = 1 cup

                                              >  1 cup + 1 cup = 2 cups = one pint

1/2 cup + 1/2 cup = 1 cup

if 4 servings go in one pint then 8 servings goes in 2 pint

Answer:

8 cups/servings.

Explanation:

Can't explain further more because I'm not good in explaining things yet I'm sure that's the correct answer.

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