2 years ago

Solve the expression shown: Whats 39 x 4

Mathematics

2 answers:

Grace [21]2 years ago

5 0

Answer: 156

Step-by-step explanation:

39 times 4 is 156 i hope i got this right

DiKsa [7]2 years ago

3 0

Answer:

39 times 4 would be equal to 156

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andre [41]

Answer with Step-by-step explanation:

We are given that

LHS

$cos 2x$

To prove that

$cos 2x=cos^2x-sin^2 x$

$cos(x+x)$

We know that

$cos(x+y)=cos xcosy-sinx siny$

Using the formula

$cos(x+x)=cosx\cdot cosx-sinx\cdot sinx$

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By using

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2 years ago

What would be A' after I dilation using a scale factor of 1/2

noname [10]

Answer:

A) (-5,0)

Step-by-step explanation:

B) (-2, 4)

C) (-2, -3)

Hope this helped!

8 0

2 years ago

Can u guys please help me

elena-s [515]

1a. The equation is x-35+x+5+x

5 0

2 years ago

Solve the system of equations. 10x+y=−20 y=2x2−4x−16 ( , ) and ( , )

Sladkaya [172]

I will go about solving this using the elimination method.

First, convert the equations.

10x + y = -20
4x + y = -12

Second, find the easiest variable to get rid of and get rid of it! (In this case, y) We will subtract to get rid of y.

6x = -8

Third, you want to solve the equation.

6x = -8 (divide by 6)
x = $-1 \frac{1}{3}$

Fourth, solve for y by inserting the answer for x into one of the equations.

10( $-1 \frac{1}{3}$ ) + y = -20
$-13 \frac{1}{3}$ + y = -20 (subtract $-13 \frac{1}{3}$ )
y = $-6 \frac{2}{3}$

The solution for this system of equations is ( $-1 \frac{1}{3}$ , $-6 \frac{2}{3}$ ).

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2 years ago

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How do i find volume of cone

lozanna [386]

The volume of a cone is 1/3 pi r^2 h, so plug this in to get the answer

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3 years ago