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3 years ago

Which expression is equivalent to cos(4a)?

Mathematics

1 answer:

vova2212 [387]3 years ago

7 0

1-8sin^2 Acos^2A or 1-8sin^2A

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The product of a number y and 3 is 6

Solnce55 [7]

Answer:

y = 2

Step-by-step explanation

$3y=6$

Divide both sides by 3

$\frac{3y}{3} =\frac{6}{3}$

Simplify

$y=2$

8 0

3 years ago

Solve for x. 3x + 5 = 23

Lunna [17]

[|] Answer [|]

$\boxed{X \ = \ 6}$

[|] Explanation [|]

3x + 5 = 23

_________

Subtract 5 From Both Sides:

3x + 5 - 5 = 23 - 5

Simplify:

3x = 18

Divide Both Sides By 3:

$\frac{3x}{3} \ = \ \frac{18}{3}$

Simplify:

X = 6

_________

- Check Your Work -

Substitute 6 For X:

3 * 6 + 5 = 23

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

3 * 6 = 18

18 + 5 = 23

$\boxed{[|] \ Eclipsed \ [|]}$

8 0

3 years ago

Read 2 more answers

What is the ratio of the volume of Cylinder A to the volume of Cylinder B?

erastovalidia [21]

Answer:

The ratio of volume of Cylinder A to the volume of Cylinder B is 18:25.

Step-by-step explanation:

Dimension of cylinder A,

Radius is 3 units and height is 4 units.

Dimension of cylinder B,

Radius is 5 units and height is 2 units.

The volume of a cylinder is given by :

$V=\pi r^2 h$

For cylinder A to B,

$\dfrac{V_A}{V_B}=(\dfrac{r_A}{r_B})^2\times \dfrac{h_A}{h_B}\\\\\dfrac{V_A}{V_B}=(\dfrac{3}{5})^2\times \dfrac{4}{2}\\\\\dfrac{V_A}{V_B}= \dfrac{18}{25}$

So, the ratio of volume of Cylinder A to the volume of Cylinder B is 18:25.

3 0

3 years ago

Determine the value of x

Brut [27]

It’s d brrooooooooooooo

6 0

3 years ago

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Please help ♡♡♡♡♡♡♡♡

tekilochka [14]

Answer:

Step-by-step explanation:

Complementary angles add to 90 degrees

a+b = 90

64+b = 90

Subtract 64 from each side

64-64 +b = 90-64

b = 26

7 0

3 years ago

Read 2 more answers