I need help with number 3, 4, 5, and 6. Please help me!

Answer:

Step-by-step explanation:

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Answer:

62

Step-by-step explanation:

h(-3)= -3(3)^3+5(-3)

=81-15= 66

g(h(-3))= x-4 : substitute h(-3) in g(x)

=66-4

=62

30 - 2x= 22

-2x = 22 - 30

-2x = -8

(dived both sides by -2)

x= 4

Answer:

Step-by-step explanation:

10-512                                                                                                                                                      = -502                                                                                                                                         = -2.251

Answer:

[tex]x = \frac{8}{7} [/tex]

Step-by-step explanation:

[tex]10 - \frac{1}{2} x = 6 + 3x[/tex]

[tex]20 - x = 12 + 6x[/tex]

[tex]20 - x - 6x = 12 + 6x - 6x[/tex]

[tex]20 - x - 6x = 12[/tex]

[tex] - x - 6x = 12 - 20[/tex]

[tex] - 7x = 12 - 20[/tex]

[tex] - 7x = - 8[/tex]

[tex]x = \frac{8}{7} [/tex]

Answer:

20

Step-by-step explanation:

You should divide the area which is 220 by the width which is 11 to get 20, then check the answer by multiplying 11 and 20 equlas 220.

Recall the following identities:

cos(4x) = cos⁴(x) - 6 cos²(x) sin²(x) + sin⁴(x)

cos(3x) = cos³(x) - 3 cos²(x) sin(x)

sin²(x) = 1 - cos²(x)

Then the equation

cos(4x) = cos²(3x) + sin²(x)

can be rewritten entirely in terms of cos(x) as

8 cos⁴(x) - 8 cos²(x) + 1 = 16 cos⁶(x) - 24 cos⁴(x) + 8 cos²(x) + 1

16 cos⁶(x) - 32 cos⁴(x) + 16 cos²(x) = 0

16 cos²(x) (cos²(x) - 1)² = 0

Now we can solve:

cos²(x) = 0   or   (cos²(x) - 1)² = 0

cos(x) = 0   or   cos²(x) - 1 = 0

cos(x) = 0   or   cos²(x)  = 1

cos(x) = 0   or   cos(x) = -1   or   cos(x) = 1

x = π/2 + 2nπ   or   x = -π/2 + 2nπ

…   or   x = π + 2nπ

…   or   x = 2nπ

where n is any integer.

Answer:

76

Step-by-step explanation:

let the number be x

Then 16 + x/-4 = -3, so

x/-4 = -16-3 = -19 (add -16 on both sides)

x = -4*-19 = 76 (multiply by -4 on both sides)

Answer:

{(7,4), (3,8), (-4,-4), (0,4)}

Step-by-step explanation:

A function does not have reoccurring x values that are identical in its points. You can have reoccurring y values in a function (ex y=sin(x)).

Answer:

-11

Step-by-step explanation:

-3w - 7 = 2

-3w (- 7 + 7) = 2 + 7

-3w = 9

-3w/-3 = 9/-3

w = -3

4w + 1

4(-3) + 1

-12 + 1

-11

Answer:

4w + 1 = -11

Step-by-step explanation:

Solving -3w - 7 = 2

By adding 7 to both sides of the equation  we get -3w = 9

to get to w = ... we need to divide both sides with -3, which gives us

w = -3. You can check this answer by putting it back into the original equation ( -3 * -3 - 7 does equal 2,  which means our solution for w is correct.

Now all we have to do is put our solution for w into the remaining equation:

4 * -3 + 1 = -12 + 1 = -11

u + u + 4 + u + 4 =

= u + u + u + 4 + 4 = 3u + 8 ← the end

Answer:

Step-by-step explanation:

Doing this the long way, write a^12 as a product of "a"s

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

Now group them into groups of 4

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

There are 3 groups of 4 so you can write it as [(a^4)]^3 which is a cube

Now do the same thing with groups of 6s

a^12 = a * a * a * a * a * a * a * a * a * a * a * a

a^12 = (a^6)^2

So the two answers are

Perfect cube:  [(a^4)]^3

Perfect square: (a^6)^2

Answer:

b = -1

Step-by-step explanation:

-7+b= -8

Add 7 to each side

-7+7+b= -8+7

b = -1

Answer:

whats 2+2 = 4

Step-by-step explanation:

Answer:

88.23

Step-by-step explanation:

The equation for the first plan is:

9 + 0.17x

The equation for the second plan is

24

Then you set the two equations equal to each other

9 + 0.17x = 24

Subtract on both sides

0.17x = 15

Divide

x = 88.23

Answer:

(p - q)(2) = 5

Step-by-step explanation:

(p - q)(2)

= p(2) - q(2)

From the table for p(x)

when x = 2 , p(2) = 3

From the table for q(x)

when x = 2 , q(2) = - 2

Then

(p - q)(2) = 3 - (- 2) = 3 + 2 = 5

Answer: it’s 1 not 5 or -5

Step-by-step explanation:

EDG E2020

Answer:

58 = 3.5x + 2

Step-by-step explanation:

Since $3.50 is charged for every mile, we multiply x by 3.5 like this: 3.5x

$2 is already added on as a free so + 2

$58 is the total amount of money for all of the charges including the per mile and pick-up fee.

This was we can solve for the number of miles, x

58 = 3.5x + 2

- 2            - 2

56 = 3.5x

56/3.5 = 3.5x/3.5

x = 16

The taxi drove a total of 16 miles

Answer: is 2

Step-by-step explanation:

Answer:

The answer is 2. Looking out for that brainliest.

Step-by-step explanation:

2(3b - 8) + 3b + 5 =

= 6b - 16 + 3b + 5 =

= 6b + 3b - 16 + 5 = 9b - 11 ← the end

Answer:

x=4

Step-by-step explanation:

-2x-5-x=-17

-3x-5-x=17

-3x=-17+5

-3x=-12

x=-12÷-3

x=4

make me as brilliant answer

Answer:

n=64

Step-by-step explanation:

Let think algebracially. One of the terms in the set is a fraction. A natural number must be a whole number so this means that

n must be a multiple of 8.

*N must be a multiple of 8.

Look at the third term, we know that a square root must produce a perfect square term to get a natural number. So n must be a multiple of 8 that makes the radical a perfect square

Perfect squares are.

0,1,4,9,16,25,36,49,64,81,100,121,144,169,196,225, 256, 289

N has to compute a sum greater than 225 so the perfect squares we look at must be greater than 225.

The next one is 256 but

[tex]256 - 225 = 31[/tex]

[tex]31 \div 8 = \frac{31}{8} [/tex]

which isn't rational so 256 won't work. Let try 289

[tex]289 - 225 = 64[/tex]

[tex]64 \div 8 = 8[/tex]

and

[tex]33 + 64 = 97[/tex]

So 64 works. 64 is the answer

n=64

Answer:

2/5 + 4/10

__4+4__

10

__8___

10

answer 8/10

Hello :D

To work this out you need the denominator to be the same. So, you multiply 2/5 by 2 which equals 4/10.

4/10 + 4/10 = 8/10

Answer:

A

Step-by-step explanation:

Post in a bit

Answer:

the answer is first option

52.311 is greater than 52.31

Answer:

115 MPH.

Step-by-step explanation:

According to Bing, 1 foot per hour = 0.000189393939 mph.

[tex]607200 * 0.000189393939 = 114.9999997608[/tex]

The max speed of the go-kart is approximately 115 mph.

Answer:

angle 2 = 37

Step-by-step explanation:

180-143=37