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3 years ago

Hewp meA! Plssssssss I am stuck and I can’t play video games bacsue of this stoopid

Mathematics

1 answer:

kaheart [24]3 years ago

3 0

Answer:

The value of x is 120°.

Step-by-step explanation:

Given that 3 identical square form a triangle in between. So this triangle has an identical angle so it is :

180° ÷ 3 = 60°

Next, this squares have an identical angle which is :

360° ÷ 4 = 90°

As you look carefully at the diagram, in the edges of triangle, there is a complete circle which is 360°. SO in order to find x, you have to substract 90° and 60° from 360° :

x + 90° + 60° = 360°

x = 360° - 90° - 90° - 60°

x = 120°

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Which is the value of this expression when a=5 and k=-2

Zinaida [17]

Answer:

Option C is correct.

Step-by-step explanation:

We are given the expression:

$(\frac{3^2a^{-2}}{3a^{-1}})^k$

The value of a =5 and k = -2

Putting the values and solving

$=(\frac{3^2*5^{-2}}{3*5^{-1}})^-2\\=(\frac{3^{2-1}}{5^{-1+2}})^-2\\=(\frac{3^{1}}{5^{1}})^-2\\\\=(\frac{3}{5})^-2\\if \,\,a^{-1} \,\,then\,\, 1/a\\=\frac{(3)^{-2}}{(5)^{-2}}\\ Can\,\,be\,\,written\,\,as\\\\=\frac{(5)^{2}}{(3)^{2}} \\=\frac{25}{9}$

Option C is correct.

3 0

3 years ago

What is 21 over 40 in percent

Lorico [155]

52.5% or it can also be a decimal if needed its 0.525

6 0

3 years ago

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vlada-n [284]

Answer:

i think 127 is right NOT SURE

Step-by-step explanation:

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3 years ago

Are these triangles similar?

OLga [1]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A bag contains eight yellow marbles, nine green marbles, three purple marbles, and five red marbles. Two marbles are chosen from

lidiya [134]

Answer:

2/15 = 13 1/3 %

Step-by-step explanation:

eight yellow marbles, nine green marbles, three purple marbles, and five red marbles = 25

P(yellow) = yellow/ total =8/25

Keep

7 yellow marbles, nine green marbles, three purple marbles, and five red marbles = 24

P(red) = red/total =5/24

P(yellow then red) = 8/25 * 5/24 = 1/15

Then we have (red, yellow) =

P(red) = red/ total =5/25 = 1/5

Keep

8 yellow marbles, nine green marbles, three purple marbles, and four red marbles = 24

P(yellow) = yellow/total =8/24 = 1/3

P(red, yellow) = 1/5*1/3 = 1/15

Add them together

1/15 + 1/15 = 2/15 =

7 0

3 years ago