3 years ago

If the sin 30 = 1/2, then which statement is true?

Mathematics

1 answer:

egoroff_w [7]3 years ago

3 0

Answer:

cos 60° = 1/2 because the angles are complements.

Step-by-step explanation:

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What constant do you need to add to each quadratic to complete the square?

babunello [35]

Answer:

1. 4

2. 16

3. 9

Step-by-step explanation:

Completing the square requires a quadratic in $ax^2+bx=c$ form. Once in this form, calculate $(\frac{b}{2})^2$ .

1. $(\frac{b}{2})^2=(\frac{-4}{2})^2=4$

2. $(\frac{b}{2})^2=(\frac{-8}{2})^2=16$

3. Requires you divide everything by 3 first.

$\frac{3x^2+18x}{3} =\frac{249}{3} \\x^2+6x=81$

$(\frac{b}{2})^2=(\frac{6}{2})^2=9$

6 0

3 years ago

What is the approximate area of this figure?A.25 cmB.29 cmC.38 cmD.42 cm

amm1812

Answer:

C. 38cm

Step-by-step explanation:

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6 0

2 years ago

Can help me with this?

Tanzania [10]

Answer:I’m sorry this is hard I don’t think I have the right answer chose C

Step-by-step explanation:

3 0

3 years ago

I need help rlly bad I have no idea what’s the answer plsss help me!!!

valina [46]

So you can see the right angle is 90

7 0

2 years ago

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It says ( Find the length of the hypotenuse )<br> ~<br> Pls?<br> Thanks!

Mashcka [7]

Answer:

Step-by-step explanation:

In order to solve this problem, we need to use Pythagorem Theorem (a^2+b^2=c^2)

When using the pythagorem theorem the hypoteneuse would be the c^2 and the two other sides would be a and b (the order doesn't matter).

So, our formula would be:

4^2+3^2=c^2

Simplifies into:

25=c^2

In order to remove the exponent 2, we would have to square root both sides by 2. After doing so, you get the answer 5.

Hope this helps! :)

5 0

3 years ago

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