3 years ago

Simplify each expression 7(3x)

1 answer:

3 0

21x because when a number (7) is right beside a number in parentheses it means that the number in the parentheses is being multiplied by the number next to the parentheses and then at the end when you get the answer you just put the x beside the answer.

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In this lesson, you worked with composite functions. Now make up any two functions f(x) and g(x), defined in terms of the variab

yaroslaw [1]

There are g(f(x)) and f(g(x))
do them then evaluate

lets say
f(x)=3x
g(x)=9x^3-4

g(f(x))=9(3x)^3-4=243x^3-4
f(g(x))=3(9x^3-4)=27x^3-12
we can see that g(f(x)) with yield a higher value for x=10

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Amie $26 to spend on school supplies . After buying10 pens she had $14.30 left. How much would each pen cost

uranmaximum [27]

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3 years ago

Which will have a greater effect on the volume of the prism: doubling the height or doubling the width? Explain your reasons.

statuscvo [17]

Doubling the width has a greater effect on volume.
The volume of a prism is calculated by this formula:
<span>Prism Volume = Area of Base • Height
The </span><span>Area of the Base </span>is calculated by this formula:
area = n * side² / (4*tan(180 / # of sides)

So, we see that doubling the width (the side length) will increase the volume by 4 whereas doubling the height only doubles the volume.

7 0

3 years ago

How many angles are there

kozerog [31]

I can count 22 of them

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3 years ago

A washer and dryer cost a total of $939. The cost of the washer is two times the cost of the dryer. Find the cost of each item.

Natasha_Volkova [10]

Answer:

The washer costs $626 and the dryer costs $313.

Step-by-step explanation:

Let the cost of the dryer be the base unit (1 unit).

Hence, the cost of the washer will be 2 units.

Total units = 1 + 2 = 3

3u = $939

1u = $313

The dryer costs $313.

Cost of washer = $313 × 2 = $626

The washer costs $626.

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3 years ago