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igomit [66]
3 years ago
7

The height of a box is 3 inches. The length is three inches more than the width. Find the width if the volume is 390. Select one

: A. 13 in. B. 130 in. C. 10 in. D. 3 in.

Mathematics
1 answer:
timama [110]3 years ago
4 0
Let
x---------> the length side of the box
y---------> the width side of the box

we know that
h=3 in
V=390 in³
volume of the box=x*y*3-------> 390=x*y*3-----> x*y=130------> equation 1
x=3+y------> equation 2

substitute 2 in 1
[3+y]*y=130-----> y²+3y=130------> y²+3y-130=0

using a graph tool------> to resolve the second order equation
see the attached figure

the solution is
y=10 in
x=3+y-----> x=3+10-----> x=13 in

the answer is
the width is 10 in

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Answer:

16

Step-by-step explanation:

Putting a + in front of a number indicates that the number is positive. so we are just going to add it up.

10+6=16

10:6=5:3

Hope it helps:)

7 0
3 years ago
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When you multiply the numerator and denominator by the same number, you get an equivilent fraction
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3 years ago
What is the side length of the eectagkes
dedylja [7]

1. 5 in and 1/3 in: Area = 5/3 in^2

2. 5 in and 4/3 in: Area= 20/3 in^2

3. 5/2 in and 4/3 in: Area=10/3 in^2

4. 7/6 in and 6/7 in: Area = 1 in^2

Step-by-step explanation:

<u>1. 5 in and 1/3 in</u>

Here,

Let\\l=5\\w=\frac{1}{3}\\Area=l*w\\=5*\frac{1}{3}\\=\frac{5}{3}\ in^2

<u>2. 5 in and 4/3 in</u>

Here,

l= 5\ in\\w=\frac{4}{3}\ in\\Area=l*w\\=5*\frac{4}{3}\\=\frac{20}{3}\ in^2

<u>3. 5/2 in and 4/3 in</u>

let\\l=\frac{5}{2}\\w=\frac{4}{3}\\Area= \frac{5}{2}*\frac{4}{3}\\=\frac{20}{6}=\frac{10}{3}\ in^2

<u>4. 7/6 in and 6/7 in</u>

<u>Let</u>

l=\frac{6}{7}\\w=\frac{7}{6}\\Area=l*w\\=\frac{6}{7}*\frac{7}{6}\\=1\ in^2

<u>Hence,</u>

1. 5 in and 1/3 in: Area = 5/3 in^2

2. 5 in and 4/3 in: Area= 20/3 in^2

3. 5/2 in and 4/3 in: Area=10/3 in^2

4. 7/6 in and 6/7 in: Area = 1 in^2

Keywords: Rectangle, Area

Learn more about rectangles at:

  • brainly.com/question/10703930
  • brainly.com/question/10772025

#LearnwithBrainly

8 0
3 years ago
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Answer:

D. 8

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C= 2πr

π= 3.14

C= 25.12

25.12 = 2 * 3.14 * r

r= 4

d= 2r

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5 0
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3 0
3 years ago
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