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3 years ago

How to find a perfect square

Mathematics

1 answer:

Rzqust [24]3 years ago

8 0

Answer:

Step-by-step explanation:

The square of a number n is denoted by n^2.

Examples: The square of 2 is 2^2, or 4; the square of 5 is 5^2, or 25. To find a perfect square of a number n, multiply the number by itself (obtaining the square of n).

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450 miles on 15 gallons of gas is what in a rate?

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450 miles/15 gallons is reduced to 30 miles/1 gallon

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3 years ago

Please help me <br><br>If 180°<α<270°, cos⁡ α=−8/17, what is sin -α?

rewona [7]

Starting from the fundamental trigonometric equation, we have

$\cos^2(\alpha)+\sin^2(\alpha)=1 \iff \sin(\alpha)=\pm\sqrt{1-\cos^2(\alpha)}$

Since $180$ , we know that the angle lies in the third quadrant, where both sine and cosine are negative. So, in this specific case, we have

$\sin(\alpha)=-\sqrt{1-\cos^2(\alpha)}$

Plugging the numbers, we have

$\sin(\alpha)=-\sqrt{1-\dfrac{64}{289}}=-\sqrt{\dfrac{225}{289}}=-\dfrac{15}{17}$

Now, just recall that

$\sin(-\alpha)=-\sin(\alpha)$

to deduce

$\sin(-\alpha)=-\sin(\alpha)=-\left(-\dfrac{15}{17}\right)=\dfrac{15}{17}$

6 0

3 years ago

Read 2 more answers

(NEED HELP WITH NUMBER 1!!!)

alexandr1967 [171]

Answer:

35 ia the answer sorry if im wrong

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3 years ago

NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS

Contact [7]

Answer:

Step-by-step explanation:

There is a common ratio between consecutive terms

r = 24 ÷ 16 = 36 ÷ 24 = 54 ÷ 36 = 1.5 = $\frac{3}{2}$

This indicates the sequence is geometric with nth term ( explicit formula )

f(n) = a₁ $(r)^{n-1}$

where a₁ is the first term and r the common ratio

Here a₁ = 16 and r = $\frac{3}{2}$ , then

f(n) = 16 $(\frac{3}{2}) ^{n-1}$ → C

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2 years ago

2x-5y<20 is solid or dotted and would you shade above or belowthe line?

Kazeer [188]

Answer:

y>-4+2x/5

Step-by-step explanation:

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2 years ago