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3 years ago

Please answer quickly thanks :) good morning btw

Mathematics

1 answer:

Alisiya [41]3 years ago

8 0

1. 1/9

2. 0

3. -9

4. -1

Reasoning: To get the opposite of a number just add a negative sign or take it away. This can be done to all numbers other than 0

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Translate and solve: 47% of 312 is what number? Round to the nearest tenth.

Svetradugi [14.3K]

Answer:

146.6

Step-by-step explanation:

0.47 * 312=146.64 when rounded to the nearest tenth that = 146.6

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Answer:

I think it would be 85 degrees.

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Find the range of the function for the given domain. f(x) = 2x - 7 ; {-2, -1, 0, 1, 2}

Studentka2010 [4]

The domain is a discrete set. So we will have a discrete range.

The range is a set containing:

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f(-1)=-9

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3 years ago

Write a pair of integers whose sum is- -8

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Answer:

-3+(-5)

Checking our answer:

Adding this does indeed give -8

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3 years ago

An equilateral triangle has a perimeter of 48 cm. What is the area?

KiRa [710]

Answer:

$A=64\sqrt{3}\ cm^2$

Step-by-step explanation:

we know that

An <u><em>equilateral triangle</em></u> has three equal sides and three equal interior angles (each interior angle measure 60 degrees)

The perimeter is equal to

$P=3b$

where

b is the length side of the equilateral triangle

we have

$P=48\ cm$

substitute

$48=3b$

solve for b

$b=48/3\\b=16\ cm$

Find the area

The formula of area applying the law of sines is equal to

$A=\frac{1}{2}b^2sin(60^o)$

substitute the value of b

$A=\frac{1}{2}(16)^2sin(60^o)$

$sin(60^o)=\frac{\sqrt{3}}{2}$

$A=\frac{1}{2}(16)^2(\frac{\sqrt{3}}{2})$

$A=64\sqrt{3}\ cm^2$

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3 years ago