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DanielleElmas [232]
3 years ago
9

Can someone please help me ?

Mathematics
2 answers:
Kitty [74]3 years ago
8 0

Answer:

72000 cm

Step-by-step explanation:

Svet_ta [14]3 years ago
8 0

Answer: Woo, that's a hard one, but it's 72,000.

Use the standard volume formula and you'll be chill.

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the perimeter of a rectangle is a 192ft. the ratio of its length to its width is 7:5. what are the dimensions of the rectangle?
Yuliya22 [10]

Answer:

L = 56, W = 40

Step-by-step explanation:

192 = 14x + 10x

x = 8

length = 8*7 = 56

width = 5*8 = 40

6 0
3 years ago
A fence 6 ft high runs parallel to the wall of a house at a distance of 5 ft. Find the length of the shortest ladder that extend
Anettt [7]

Answer:

L = 15.53 ft

Step-by-step explanation:

using diagram which is attached below

now, using Pythagoras theorem

L² = b²  + (5 + x)²...............(1)

using similarity of triangle

\dfrac{x}{6}=\dfrac{5+x}{b}

b=\dfrac{5+x}{x}6

from equation (1)

L^2 = (\dfrac{5+x}{x}6)^2 + (5 + x)^2

     = (5+x)^2(1+\dfrac{36}{x^2})

\frac{\mathrm{d} L^2}{\mathrm{d} x}= 2(5+x)(1+\dfrac{36}{x^2})+(5+x)^2(\dfrac{-2\times 36}{x^3})

\frac{\mathrm{d} L^2}{\mathrm{d} x}= (5+x)(2-\dfrac{72\times 5}{x^3})

for maxima or minima

\frac{\mathrm{d} L^2}{\mathrm{d} x}=0

x = -5 and x =  ∛190  = 5.74

on second derivative 5.74 is the value which comes out to be minimal value which is the distance between the fence and ladder

now,

L² = 241.38

L = 15.53 ft

7 0
3 years ago
Triangle A is a scaled version of triangle B. The dimensions of triangle A are twice the dimensions of triangle B. The area of t
Pie

Step-by-step explanation:

the lengths of any line (side, height,...) in A is twice as long as in B.

now, the area of a triangle is

baseline × height / 2

so, two lines are multiplied. that means the factor 2 gets multiplied in 2 times. and that means the area increases by the factor 2×2 = 4

therefore, the area of A is

40.5 × 4 = 162 cm²

7 0
3 years ago
Richard can make one jewelry box using 88
ruslelena [56]

Answer:

10

Step-by-step explanation:

8 0
3 years ago
Liam and Harper are racing on a track. Liam runs 4 miles per hour and gets a 0.25 miles head start. Harper runs 0.5 mile per hou
igomit [66]
S=d/t
for liam
4=.25/t
t=.25/4
t=0.0625hours
for harper
t=0.25/4.5=0.055hours
msg me if it helps
4 0
4 years ago
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