PLEASE ANSWER ASAP IT'S IMPORTANT 30 POINTS

Mathematics

2 answers:

Reptile [31]2 years ago

3 0

Answer:

√841

Step-by-step explanation:

You would use pythagorean theorem to solve this problem:

a² + b² = c²

a = 20 b = 21

20² + 21² = 400 + 441 = 841

√841

Kisachek [45]2 years ago

3 0

841 square rooted because after you square root 841 you get 29 as the hypotenuse

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4 2 5 0 3 2 8 7 2 1 8 ?

natali 33 [55]

Answer:

Step-by-step explanation:

7 0

2 years ago

Factor x2 + 29x - 30.

marysya [2.9K]

Ok the w to your question is to cross multiply 216=9m m=24

8 0

3 years ago

Read 2 more answers

Take 9.5 gallons 6 1/3 poured out how much water is left in the tank

elena55 [62]

We can first convert 9.5 into fraction :

9.5= 9 1/2

Then we can use deduction to find out the answer:

9 1/2 - 6 1/3

=19/2 - 19/3

We change it to the same denominator:

=19×3/6 - 19×2/6

= 57/6 - 38/6

= 19/6

Therefore there are 19/6 or 3 1/6 gallons left in the tank.

Hope it helps!

4 0

3 years ago

Can someone solve this?

ladessa [460]

First question:

Recall that $\cos^2x+\sin^2x=1$ and $\sqrt{x^2}=|x|$ for all $x$ . So

$\sqrt{1-\cos^2x}=\sqrt{\sin^2x}=|\sin x|$

$\sqrt{1-\sin^2x}=\sqrt{\cos^2x}=|\cos x|$

For $0$ , we expect both $\cos x>0$ and $\sin x>0$ (i.e. the sine and cosine of any angle that lies in the first quadrant must be positive). By definition of absolute value, $|x|=x$ if $x>0$ .