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3 years ago

Can you relly much help me do this

Mathematics

1 answer:

slava [35]3 years ago

5 0

Hey!
So It would be set up as .75n -2 = 10
.75 is the same as 3/4
Now add 2 to both sides
.75n = 12
now we want to get n alone so that we know what the number is, so divide .75 to both sides since it's multiplied to n
n=16
The answer is D!
Hope this helps!

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Find the perimeter of a parallelogram whose base is 8cm and another side is 12cm

lidiya [134]

A parallelogram

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The answer is 64

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3 years ago

Kristen is 64 inches tall, and she stands 12 feet away from a streetlight. If she casts an 82-inch-long shadow, how tall is the

o-na [289]

Answer:

176.39 inches or

14.70 feet

Step-by-step explanation:

Consider the right triangle made by Kristen, ground and shadow.

This triangle has one leg as 64 inches.

Next consider the right triangle formed by street light, ground upto shadow tip.

The two triangles have common angle of elevation and also another angle as 90 degrees.

Hence the two triangles would be similar

Also if A is the angle made by hypotenuse of both triangles with the ground we have

$tanx=\frac{64}{82}$

This value also equals by bigger triangle as

$tanx=\frac{h}{82+12(12)}=\frac{h}{226}$

From these two we get

h = height of street light = $\frac{226(64)}{82} =176.39$

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3 years ago

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Furkat [3]

Answer:

The A≈706.86

Step-by-step explanation

A=πr2

d=2r

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A=1

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8 0

3 years ago

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maw [93]

Answer:

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A baseball team played 25 games and won 10 of them what percent of the game did they win

navik [9.2K]

Answer: 40%

Step-by-step explanation:

They won 10 out of 25, so we can write it as a fraction:

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7 0

3 years ago