3 years ago

It's 2 questions only , plzzz help meee

1 answer:

4 0

The first question is the 3rd choice.
The second question is also the 3rd choice.

Do you need work?

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Feliz [49]

$(3 \times 12) + (4 \times 12) +(2 \times 6) \\ 36 + 48 + 12 = 96$

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3 years ago

bazaltina [42]

( - 8 + b )( - 4 - 3 ) = 0;
( - 8 + b )( - 7 ) = 0 ;
-8 + b = 0;
b = 8.

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3 years ago

nika2105 [10]

7p-(-5)+(-1)
7p+5-1
7p+4

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3 years ago

Leviafan [203]

Answer:

a = $\frac{1}{\sqrt{2} }$ and b = $\frac{\sqrt{2} }{2}$

Step-by-step explanation:

As we know, the radius of the unit circle is 1 unit (it is the hypotenuse in the right triangle, the blue line)

We use trigonometric formulas to find out a and b

<=> Sin(45) = b / 1

<=> b= Sin(45)*1 = $\frac{\sqrt{2} }{2}$

<=> Cos(45) = a / 1

<=> a = Cos(45)*1 = $\frac{1}{\sqrt{2} }$

So: a = $\frac{1}{\sqrt{2} }$ and b = $\frac{\sqrt{2} }{2}$

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3 years ago

Ksju [112]

I think the answer is: 6 = -21

8 0

3 years ago