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nikklg [1K]
3 years ago
14

Devin has 32 books to pack in boxes she packs eight books in each box. how many boxes does she need? write an equation using the

letter n to stand for the unknown factor. explain. how to find the unknown factor
Mathematics
2 answers:
valkas [14]3 years ago
6 0
So 32=(number of boxes) times (number of books per box)
number of books per box=8
number of boxes=n
32=n times 8
so equation is
32=8n

sol divide both sides by 8
32/8=8/8n
4=1n
4=n
4 boxes
anzhelika [568]3 years ago
6 0
32÷8=4 boxes
n=4
x+y=n
32÷8=n
x=32
y=8
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Perpendicular

Step-by-step explanation:

m=y2-y1/x2-x1

m=15-3/14-(-2)

m=3/4

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X-treme Sports has skateboards at a 24% discount. Find the sale price of a $384 skateboard using percent paid.
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Step-by-step explanation:

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3 years ago
The sum of an infinite geometric series is 450, while the common ratio of the series is 4/ 5 . What is the first term of the ser
pogonyaev

Answer:

answer is 90 for first term

Step-by-step explanation:

Let the terms be  

First term x

We will use the formula s∞=x/1−r to find the sum of an infinite geometric series, where −1<r<1.  

We know the sum and the common ratio, so we'll be solving for x where r =4/5

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7 0
3 years ago
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Lucy is a dress maker. She sews 4/7 of a dress in 3/4 hour. Lucy sews at a constant rate. At this rate, how many dresses does Lu
MAVERICK [17]

Answer:

16/21 dresses

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If we want 1 hour, then k will need to be 4/3

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7 0
3 years ago
Suppose Evan is trying to build a frame out of popsicle sticks x inches long. The frame will have length (2x – 3) and width of (
erik [133]

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The correct option is A)  3 square inches; 2x^2-7x+6.

Step-by-step explanation:

It is given that the length of the frame is (2x-3) and the width is (x-2)

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Where, A is the area l is the length and w is the width of the rectangle.

Put l=(2x-3) and w=(x-2) in the area of the rectangle.

A=(2x-3)(x-2)\\A=2x^2-4x-3x+6\\A=2x^2-7x+6

The area of the frame expressed as a polynomial is 2x^2-7x+6.

Now substitute x=3 in A=2x^2-7x+6.

A=2(3)^2-7(3)+6\\A=18-21+6\\A=3

The area of the frame is 3 square inches.

Hence, the correct option is A)  3 square inches; 2x^2-7x+6.

8 0
3 years ago
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