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3 years ago

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Which of the following is not a perfect square? A. 36 B. 45 C. 64 D. 81 ...?

1 answer:

Dmitriy789 [7]3 years ago

5 0

In your question, 45 is not a perfect square.
A perfect square is when you divide or multiply the number by itself.
36 is a perfect square because it's factor is 6 x 6 (6,6).
<span>64 is a perfect square because it's factor is 8 x 8 (8,8).
</span><span>81 is a perfect square because it's factor is 9 x 9 (9,9).</span>

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Answer:

Step-by-step explanation:

16x^2 + 9 = 25

16x^2 = 16

x^2 = 1

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3 years ago

A=1/2 (a+b)h work out A if a=2 b=7 h=3

BartSMP [9]

Step-by-step explanation:

A =1/2(a+b)h

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3 years ago

The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of

kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

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$A=\frac{\sqrt{3} }{4} a^{2}$

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

Then, its area is

$A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}$

$A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}$

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

So, area is

$A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}$

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$\frac{A_{1}}{A_{2}} =$ 2.25

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3 years ago

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Archy [21]

Answer:

m=4 is the correct answer

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2 years ago

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Elden [556K]

Answer:

C)17

Step-by-step explanation:

5+y+8

let y=4

5+4+8

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3 years ago

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