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3 years ago

The lengths of three ropes are 4 : 5 : 9. If the length of the shortest rope is 20 cm, find the length of the longest rope

2 answers:

7 0

Answer:

Don’t quite me on it, but 45cm?

Explanation:

Well, if the shortest rope (4) is only 20cm, it’s about 5cm per length (?)

So, if you follow that pattern the longest (9) would be 45cm.

vfiekz [6]3 years ago

4 0

The answer is 45
If 20/4 = 5
Then 9x5 = 45

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The ratio of the height of two similar pyramids is 4:7. The volume of the smaller pyramid is 1,331cm, to the nearest whole numbe

IRISSAK [1]

Answer:

The volume of the larger pyramid is equal to $7,133\ cm^{3}$

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

In this problem, the ratio of the height is equal to the scale factor

$z=\frac{4}{7}$

step 2

Find the volume of the larger pyramid

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z----> the scale factor

x----> volume of the smaller pyramid

y----> volume of the larger pyramid

$z^{3}=\frac{x}{y}$

we have

$z=\frac{4}{7}$

$x=1,331\ cm^{3}$

substitute

$(\frac{4}{7})^{3}=\frac{1,331}{y}\\ \\(\frac{64}{343})=\frac{1,331}{y}\\ \\y=343*1,331/64\\ \\y=7,133\ cm^{3}$

8 0

3 years ago

How do I divide 581 by 120 ?

s2008m [1.1K]

The answer is <span>4.84166667</span>

7 0

3 years ago

Enter the equation of the circle in standard form with center and radius given.\\\\\\\\\\\Center (8,0), radius = sqrt 3/////////

ehidna [41]

Answer:

(x - 8)^2 + y^2 = 3.

Step-by-step explanation:

(x - h)^2 + (y - k)^2 = r^2

Here h = 8, k = 0 and r^2 = (√3)^2 = 3

The answer is (x - 8)^2 + (y - 0)^2 = 3

or (x - 8)^2 + y^2 = 3.

4 0

3 years ago

-2(3x-3)=4x please help solve for x=

Llana [10]

Answer:

exact form:

x= 3/5

Decimal form:

x=0.6

6 0

3 years ago

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Sooooooooooooo..........

Alika [10]

Answer:

You can usually just go to profile and change your email and it will change your name necasue your name comes from your email.

Hope this helps

PLease mark me as Brainliest

8 0

3 years ago

Read 2 more answers