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3 years ago

Someone please help me

Mathematics

2 answers:

kirill115 [55]3 years ago

7 0

It’s d 6ft

:))))))))))

ryzh [129]3 years ago

6 0

Answer:

6 ft

Step-by-step explanation:

10² - 8² = x²

100 - 64 = x

100 - 64 = 36

√36 = 6

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Nesterboy [21]

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Step-by-step explanation:

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3 years ago

An equilateral triangle has sides of length(3k-2)units. A regular pentagon(5 sides) has sides of (2k+0.5)units. If the perimeter

Vitek1552 [10]

The length of side of triangle is 5 units and length of side of pentagon is 1.5 units.

<u>SOLUTION:</u>

Given, An equilateral triangle has sides of length $(3k-2)$ units.

Then, perimeter of the triangle will be $3 \times(3 k-2)=9 k-6$

A regular pentagon (5 sides) has sides of $(2k+0.5)$ units.

Then, perimeter of the pentagon will be $5 \times(2 k+0.5)=10 k+2.5$

We have to find the dimensions of each shape . Now, the perimeter of the triangle is twice the perimeter of the pentagon,

So, $\text {perimeter of triangle} = 2\times \text{perimeter of pentagon}$

$\begin{array}{l}{\rightarrow 9 k-6=2(10 k+2.5)} \\\\ {\rightarrow 9 k-6=20 k+5} \\\\ {\rightarrow 20 k-9 k=-6-5} \\\\ {\rightarrow 11 k=-11} \\\\ {\rightarrow k=-1}\end{array}$

Then, length of side of triangle $= 3(-1)-2 = - 5$

Length of side of pentagon $= 2(-1) + 0.5 = - 1.5$

We have to neglect, negative sign as lengths can’t be negative. Even if we change the sign above all conditions are satisfied.

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3 years ago

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shusha [124]

Answer:

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Step-by-step explanation:

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Hope this helps

Please mark me as brainliest

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Temka [501]

Answer:

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Step-by-step explanation:

use rise over run up 4 over 5!!!

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