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3 years ago

If the √4 is 2, what is 89²?

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

8 0

Your answer is 7,921.

Calculations:

89x89 = 7,921

SpyIntel [72]3 years ago

6 0

89x89=7,921 would be the answer

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Which of the following options have the same value as 2%, percent of 90?

SIZIF [17.4K]

The right answer is Option B and Option E.

Step-by-step explanation:

Given value is;

2% of 90.

Percent can also be written fraction form, therefore, we can write it as;

$\frac{2}{100}*90$

If we divide the 2 the by 100, then it would become,

$0.02*90$

Therefore,

$\frac{2}{100}*90$ and 0.02*90 have same value as 2% of 90.

The right answer is Option B and Option E.

Keywords: percentage, fraction

Learn more about fractions at:

#LearnwithBrainly

7 0

3 years ago

Review the proof step statement 1 cos(2x) = 1-sin^2(x)

ehidna [41]

Answer:

Option (3)

Step-by-step explanation:

Correct steps for the proof are,

Step Statement

1 cos(2x) = 1 - 2sin²(x)

2 Let 2x = θ

3 x = $\frac{\theta}{2}$

4 $\text{cos}\theta = 1 - 2\text{sin}^2(\frac{\theta}{2} )$

5 $\text{cos}\theta-1 =-2\text{sin}^2(\frac{\theta}{2} )$

6 $1-\text{cos}\theta =2\text{sin}^2(\frac{\theta}{2} )$

7 $\frac{1-\text{cos}\theta}{2} =\text{sin}^2(\frac{\theta}{2} )$

8 $\pm \sqrt{\frac{1-\text{cos}\theta}{2} }=\text{sin}(\frac{\theta}{2} )$

There is a mistake in step 6.

Therefore, Option (3) will be the answer.

3 0

3 years ago

URGENT 10PTS PLEASE HELP!!!

liberstina [14]

I myslef think it’s D but u can search it up to check!

6 0

4 years ago

The base of the figure shown is a cube with sides that are 12 inches long. The total height of the figure is 20 inches. The slan

elena-s [515]

It should be 960 square inches! :)

4 0

4 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=8%28%20%7B4%7D%5E%7B2%7D%29%20%2B%20%20%7B2%7D%5E%7B4%7D%20" id="TexFormula1" title="8( {4}^{2

cluponka [151]

The given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

<em><u>Solution:</u></em>

Given expression is:

$8(4)^2+2^4$

We have to evaluate the above given expression

We know that,

$(4)^2 = 4 \times 4 = 16$

$2^4 = 2 \times 2 \times 2 \times 2=16$

Substituting these in above given expression, we get

$8(4)^2+2^4=8 \times 16+16\\\\8(4)^2+2^4= 128+16\\\\8(4)^2+2^4=144$

Also we know that,

$12 \times 12 = 144$

Therefore,

$8(4)^2+2^4=144 = 12 \times 12 = 12^2$

Thus the given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

7 0

4 years ago