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Lapatulllka [165]
3 years ago
10

7th grade math please helpp i have alot of questions due in 10mins​

Mathematics
1 answer:
max2010maxim [7]3 years ago
3 0

Answer:

V=247.8

Step-by-step explanation:

V=whl

V = (4.2)(5)(11.8)

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Out of 360 students, 315 went on the class field trip. What percent of students did not go on the class field trip.
astraxan [27]

315 did

therefore

360-315=45 didnt

45/360 students didnt go on the trip

so to turn this into a percentage, just multiply this fraction by 100:

45/360*100 = 12.5%

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3 years ago
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Write an equation to represent the following statement.
hichkok12 [17]

Answer:

j / 9 = 5

j = 45

Step-by-step explanation:

j / 9 = 5

Multiply each side by 9

j/9 * 9 = 5*9

j = 45

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I have no clue how to do this! Find mAC
pickupchik [31]

Step-by-step explanation:

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An equation is a statement that is true for every value in the domain.<br> O True<br> O False
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3 years ago
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The credit remaining on a phone card (in dollors) is a linear function of the total calling trime made with the card ( in minute
KATRIN_1 [288]

After 85 minutes of calls, there are $27.25 left on the card.

<h3>What is the remaining credit after 85 minutes of calls?</h3>

A linear equation in slope-intercept form is:

y = a*x + b

Where a is the slope.

If the line passes through two points (x₁, y₁) and (x₂, y₂) the slope is:

a = \frac{y_2 - y_1}{x_2 - x_1}

In this case, we know that the line passes through the points (22, 36.7) and (52, 32,20)

(points of the form (time, dollars)).

So the slope is:

a = \frac{32.2 - 36.7}{52 -22} = -0.15

The linear equation is then:

y = -0.15*x + b

To find the value of b, we use the point (22. 36.7)

36.7 = -0.15*22 + b

36.7 + 0.15*22 = b = 40

Then the linear equation is:

y = -0.15*x +40

The amount remaining in the credit card after 85 minutes is given by evaluating the above equation in x = 85.

y = -0.15*85 + 40 = 27.25

This means that after 85 minutes of calls, there are $27.25 left on the card.

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

7 0
2 years ago
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