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Alenkinab [10]
3 years ago
7

The length of a rectangle is twice the width. the area is 30 yds^2. find the length and the width.

Mathematics
1 answer:
hjlf3 years ago
3 0
<span>width = x
</span><span>length = 2x

x * 2x = 30
2x</span>² = 30
x² = 15
x = √15 ≈ 3.87 yds  ←  width 

length = 2x = 2√15 ≈ 7.74 yds
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A pyramid has a base 16 inches x 16 inches and a slant height of 10 inches. what is the volume in cubic inches
gizmo_the_mogwai [7]

Answer:

  512 in³

Step-by-step explanation:

The height perpendicular to the base is the leg of a right triangle with hypotenuse 10 in and other leg 8 in. Using the Pythagorean theorem, we can find it as ...

  h² +8² = 10²

  h² = 100 -64 . . . . . subtract 8²

  h = 6 . . . . . . . . . . . . take the square root of 36

Then the volume is found using ...

  V = (1/3)Bh = (1/3)(16 in)²(6 in) = 512 in³

The volume is 512 cubic inches.

_____

The 8-inch dimension used above comes from half the distance between the center of one side of the base to the center of the opposite side. (16 in)/2 = 8 in.

4 0
4 years ago
Evaluate -2=y+5 and solve the variable
Rudiy27

Answer:

y=-7

Step-by-step explanation:

-2=y+5

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5 0
3 years ago
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How can i simplify 16m cubed -10m squared
adoni [48]
16m cubed - 10m squared......
take out the common factors
they both have a two that can go into it and both have two m's you can take out
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5 0
3 years ago
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NEED HELP ASAP!!
pantera1 [17]

Answer:

t=1/30 h = 2 min

Step-by-step explanation:

d = vt

system of equations:

d = 13t

d - 2/5 = t       ->     d = t+2/5

Solve

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8 0
3 years ago
Please help me ASAP!!!!!!!!
Maurinko [17]
1 2/6 = 6/6 + 2/6
answer is A.

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5/8 - 4/8 = 1/8
answer is B 1/8 lb
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1 6/8 = 14/8
1 3/8 = 11/8
14/8 + 11/8 = 25/8 = 3 1/8
answer is C. 3 1/8 miles
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1 7/100 + 4 6/10 = 5 67/100 (5 and 67/100)

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3/4(4) =3
1/4(2) = 1/2

3 - 1/2 = 6/2 - 1/2 = 5/2 = 10/4

answer is C. 10/4 ft
8 0
4 years ago
Read 2 more answers
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