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77julia77 [94]
3 years ago
9

Find the width of a rectangle is the perimeter is 56 cm and the length is 15 cm.

Mathematics
1 answer:
MrMuchimi3 years ago
4 0

Answer:

13cm

Step-by-step explanation:

P=2l+2w

56=2(15)+2w

56=30+2w

26=2w

w=13

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The volume of a rectangular prism is 5058 cubic inches.
astra-53 [7]

Answer:

412in

Step-by-step explanation:

5 0
2 years ago
In AJKL, JL is extended through point L to point M, m m
arlik [135]

Answer:

x = 15

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ KLM is an external angle of the triangle, thus

∠ KLM = ∠ JKL + ∠ KJL , substitute values

5x - 7 = x + 20 + 2x + 3

5x - 7 = 3x + 23 ( subtract 3x from both sides )

2x - 7 = 23 ( add 7 to both sides )

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x = 15

4 0
3 years ago
Evaluate. 10/1·(−4) Enter your answer in the box.
Marrrta [24]

Step-by-step explanation:

10/1(-4)

10(-4)

=-2.5 or 5/-2

4 0
2 years ago
If a cylinder has a radius of 11 inches and a height of 18 inches, then what is it’s volume?
Dennis_Churaev [7]
The volume of a cylinder is PiR^2H.
We have the radius and height, so we can answer this.
Pi = 3.14
R = 11
H = 18
3.14 x 11^2 x 18.
Your answer is 6838.92 inches.
6 0
3 years ago
The sides of a triangle have lengths 2x + 2, 4x, and 5x + 1. The longest side of the triangle has a length of 5x + 1. For what v
Savatey [412]

Answer:

Step-by-step explanation:

(5x+1)²>(2x+2)²+(4x)²

25x²+10x+1>4x²+8x+4+16x²

5x²+2x-3>0

5x²+5x-3x-3>0

5x(x+1)-3(x+1)>0

(x+1)(5x-3)>0

x+1=0,gives x=-1

5x-3=0,gives x=3/5

x >0(because 4x should be >0)

side is always positive.

so x>3/5

again 5x+1<2x+2+4x

5x-6x<2-1

-x<1

x>-1

x=all real values >3/5

4 0
3 years ago
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