3 years ago

What is the surface area of this rectangular prism?

Mathematics

2 answers:

stira [4]3 years ago

8 0

i think the answer is A.

Vilka [71]3 years ago

3 0

The answer is c hehe give me brainliest if my is true

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Someone please help me thank you

serg [7]

Answer:

6 and 3

Step-by-step explanation:

6 · 3 = 18

6 + 3 = 9

8 0

3 years ago

Given cos = -2/5 a in quadrant III and cos b = 1/4, b in quadrant I find

BigorU [14]

I guess you mean $\cos a=-\dfrac25$ . Since $a$ is in quadrant III, we expect $\sin a$ . Then

$\sin a=-\sqrt{1-\cos^2a}=-\dfrac{\sqrt{21}}5$

Since $b$ is in quadrant I, we expect $\sin b>0$ , so that

$\sin b=\sqrt{1-\cos^2b}=\dfrac{\sqrt{15}}4$

Now,

$\sin(a+b)=\sin a\cos b+\cos a\sin b=-\dfrac{2\sqrt{15}+\sqrt{21}}{20}$

$\cos(a+b)=\cos a\cos b-\sin a\sin b=\dfrac{3\sqrt{35}-2}{20}$

and

$\tan(a+b)=\dfrac{\sin(a+b)}{\cos(a+b)}=-\dfrac{2\sqrt{15}+\sqrt{21}}{3\sqrt{35}-2}$

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4 years ago

Twice the quantity of 4d increased by 9 is 33.

slava [35]

play with my melons and drool my girl part

Step-by-step explanation:

it would feel so good and after i can make you com it will make you feel better

5 0

3 years ago

What is 9bc−6b<br> written in factored form?

Rus_ich [418]

Answer:

3b(3c - 2) hope this helped!

Step-by-step explanation:

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3 years ago

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What be is thw word for a number a variable or a product of a number and one or more variables

Xelga [282]

is the question multiple choice? if not I'd go with absolute value

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4 years ago