i know solve 13
but i want steps​

Answer:

The answer would be -16a⁴+8a³-1

The -4a² and 4a² cancel each other out so you put 1 in its place

Problem 5

-------------------------

Explanation:

When we increase some value by 7%, we are effectively multiplying by 1.07

Note how 100% + 7% = 107% = 1.07

The 1.07 multiplier is then handy to use algebra to find the cost before tax is added

x = cost before tax

1.07x = cost after tax

1.07x = 524.30

x = 524.30/1.07

x = 490

Before tax, the water heater cost $490.

If we apply a 7% tax, then we pay 7% of 490 = 0.07*490 = 34.30 dollars on top of the $490 to get 490+34.30 = 524.30 which matches with the instructions. So our answer is verified.

Or you could use the 1.07 multiplier shortcut to see that 1.07*490 = 524.30

======================================================

Problem 6

-------------------------

Explanation:

His gross pay is $1750. This is the amount he earned before any taxes are applied. The items of Medicare, Social Security, and Federal Withholding Income Tax, are all various taxes that Ian has to pay. So his gross pay will be reduced to some smaller value to get the net pay.

To find the total amount of taxes deducted from his paycheck, we add up the tax percentage values to get: 1.45+6.2+18 = 25.65

This means Ian is taxed at a total rate of 25.65% of his gross pay, and he has to pay 0.2565*1750 = 448.875 = 448.88 dollars to the government. This leaves 1750-448.88 = 1301.12 dollars left over for his net pay.

A slightly alternative way is to note how if Ian pays 25.65% of his gross pay, then he's left with 100% - 25.65% = 74.35% of his paycheck, and 0.7435*1750 = 1,301.125 which would round down to 1301.12

I'm rounding up when it comes to determining the amount of tax to pay, while rounding down any amount Ian has left over for his net pay. This ensures that we consider the worst-case scenario.

Answer:

9

Step-by-step explanation:

To solve this, you need to find the proportion.

p is a leg of the large triangle, and the leg to the small triangle is 6.

8 is another leg of the small triangle, and 8+4 is the leg of the large triangle.

So [tex]\frac{small triangle}{big triangle} = \frac{small triangle}{big triangle\\}[/tex]

[tex]\frac{8}{12} =\frac{6}{p}[/tex]

[tex]\frac{2}{3} =\frac{6}{p}[/tex]

cross multiply to get 2p=18

divide both sides by 2

p=9.

Answer:

obtuse equilateral

Step-by-step explanation:

shapes are easy :)

Answer:

obtuse scalene      give crdit to the answer above

Answer:

3rd graph

Step-by-step explanation:

Edge 2021

Answer:

3rd graph

Step-by-step explanation:

Answer:

x = -9

Step-by-step explanation:

-3x + 8 =35

-3x = 27

x = -9

Answer:

x=-9. Success to the homework.

Answer:

1. you need to have very very good marks, 2.you need to always pass and not fail because it you do you will have to pay for your self 3.

The three obligations of a bursary student are:

A bursary is a financially support set out especially for one in university or college to enable them see through their academics

Obligations of  bursary depends more on the body financing it but generally one must

Read more on bursary here: https://brainly.com/question/26045714

Answer:

640 times greater

Step-by-step explanation:

Given the following

area of the pacific ocean = 6.4x10^7 square miles

area of the gulf of mexico =  10^5 square miles

Taking the ratio of the distances

pacific ocean/gulf of mexico = 6.4x10^7/10^5

pacific ocean/gulf of mexico = 6.4 * 10^2

pacific ocean/gulf of mexico =640

pacific ocean = 640gulf of mexico

Hence the area of the pacific ocean us 640 times greater than the area of the gulf of mexico

Answer:

[tex] \frac{1}{3} [/tex]

is your answers

hope so it is helpful to u

Answer:

[tex]\frac{1}{3}[/tex]

Step-by-step explanation:

Answer:

Hold on let me seee!!!!!!!

Answer:

what is the question, it is unclear

Answer:

u = 23 and t = 6

Step-by-step explanation:

Given

u = 4v - 3t

(a)

u = 4(5) - 3(- 1) = 20 + 3 = 23

(b)

- 10 = 4(2) - 3t

- 10 = 8 - 3t ( subtract 8 from both sides )

- 18 = - 3t ( divide both sides by - 3 )

6 = t

Answer:

i would say its b

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

FV= $669.11

Step-by-step explanation:

Giving the following information:

Purchase price (PV)= $800

Decrease value (d)= 1.5% per year

Number of periods (n)= 12 years

To calculate the value of the card after 12 years, we need to use the following formula:

FV= PV / (1 + d)^n

FV= 800 / (1.015^12)

FV= $669.11

Answer: 147

Step-by-step explanation:

never is 42% of 350 people

so, 42/100 * 350= 147

UWU

Answer:

[tex]\frac{11}{6}[/tex] units

Step-by-step explanation:

To find the x- intercepts let y = 0 , that is

6x² - 7x - 3 = 0 ← in standard form

(3x + 1)(2x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

3x + 1 = 0 ⇒ 3x = - 1 ⇒ x = - [tex]\frac{1}{3}[/tex]

2x - 3 = 0 ⇒ 2x = 3 ⇒ x = [tex]\frac{3}{2}[/tex]

Find the difference of the 2 x- intercepts using absolute value

distance = | [tex]\frac{3}{2}[/tex] - (- [tex]\frac{1}{3}[/tex] ) | = | [tex]\frac{3}{2}[/tex] + [tex]\frac{1}{3}[/tex] | = | [tex]\frac{11}{6}[/tex] | = [tex]\frac{11}{6}[/tex]

Answer:

iii only is correct answer

Answer:

Step-by-step explanation:

4.75%

Answer:

12.16

Step-by-step explanation:

From your question, we have the following information

Mean = u = 20

Standard deviation sd = 4

P(X>Xo) = 0.975

1-0.975 = 0.025

P(z<Xo-20/4) = 0.025

Xo-20/4 = -1.96

We cross multiply

Xo - 20 = -1.96 x 4

Xo - 20 = -7.84

Xo = -7.84+30

Xo = 12.16

12.16 is the value of Xo and therefore the answer to this question.

Thank you!

Answer:

Step-by-step explanation:

Use the quadratic formula to find the solutions.

−

b

±

√

b

2

−

4

(

a

c

)

2

a

-

b

±

b

2

-

4

(

a

c

)

2

a

Substitute the values

a

=

2

a

=

2

,

b

=

−

6

b

=

-

6

, and

c

=

5

c

=

5

into the quadratic formula and solve for

x

x

.

6

±

√

(

−

6

)

2

−

4

⋅

(

2

⋅

5

)

2

⋅

2

6

±

(

-

6

)

2

-

4

⋅

(

2

⋅

5

)

2

⋅

2

Simplify.

Tap for fewer steps...

Simplify the numerator.

Tap for fewer steps...

Raise

−

6

-

6

to the power of

2

2

.

x

=

6

±

√

36

−

4

⋅

2

⋅

5

2

⋅

2

x

=

6

±

36

-

4

⋅

2

⋅

5

2

⋅

2

Multiply

−

4

-

4

by

2

2

.

x

=

6

±

√

36

−

8

⋅

5

2

⋅

2

x

=

6

±

36

-

8

⋅

5

2

⋅

2

Multiply

−

8

-

8

by

5

5

.

x

=

6

±

√

36

−

40

2

⋅

2

x

=

6

±

36

-

40

2

⋅

2

Subtract

40

40

from

36

36

.

x

=

6

±

√

−

4

2

⋅

2

x

=

6

±

-

4

2

⋅

2

Rewrite

−

4

-

4

as

−

1

(

4

)

-

1

(

4

)

.

x

=

6

±

√

−

1

⋅

4

2

⋅

2

x

=

6

±

-

1

⋅

4

2

⋅

2

Rewrite

√

−

1

(

4

)

-

1

(

4

)

as

√

−

1

⋅

√

4

-

1

⋅

4

.

x

=

6

±

√

−

1

⋅

√

4

2

⋅

2

x

=

6

±

-

1

⋅

4

2

⋅

2

Rewrite

√

−

1

-

1

as

i

i

.

x

=

6

±

i

⋅

√

4

2

⋅

2

x

=

6

±

i

⋅

4

2

⋅

2

Rewrite

4

4

as

2

2

2

2

.

x

=

6

±

i

⋅

√

2

2

2

⋅

2

x

=

6

±

i

⋅

2

2

2

⋅

2

Pull terms out from under the radical, assuming positive real numbers.

x

=

6

±

i

⋅

2

2

⋅

2

x

=

6

±

i

⋅

2

2

⋅

2

Move

2

2

to the left of

i

i

.

x

=

6

±

2

i

2

⋅

2

x

=

6

±

2

i

2

⋅

2

Multiply

2

2

by

2

2

.

x

=

6

±

2

i

4

x

=

6

±

2

i

4

Simplify

6

±

2

i

4

6

±

2

i

4

.

x

=

3

±

i

2

x

=

3

±

i

2

The final answer is the combination of both solutions.

x

=

3

2

+

i

2

,

3

2

−

i

2

x

=

3

2

+

i

2

,

3

2

-

i

2

Answer:

0.012 meters

Step-by-step explanation:

12/1000 = 0.012

Answer:

0.012

Step-by-step explanation:

divide length value (12 in this case) by 1000

we know that a whole circle is found using π[tex]r^{2}[/tex].

So π[tex]10^{2}[/tex] = 314

so now we know that the whole circle is 314 squared units, we need to find the specific portion.

Oh wait, i learned this lol,

formula for area of sector

As (areas of sector) = π[tex]r^{2}[/tex]([tex]\frac{θ}{360}[/tex])

As (areas of sector) = π[tex]10^{2}[/tex]([tex]\frac{θ}{360}[/tex])

100 times 3.14

314 (43/360)

314(0.12)

As (areas of sector) = 37.68

I hope this finds you well, and have a great day.

Answer:

an inexpensive source of energy.

explanation:

hope u hav a gud day ^-^

Answer:

5:4

Step-by-step explanation:

40:32

20:16

10:8

5:4

Answer:

Step-by-step explanation:

5:4 For  every 5 dogs there are 4 cats

40/8 =5

32/8= 4

Answer:

Step-by-step explanation:

4) Angles opposite to equal sides are equal

45 + 45 + x = 180     {Angle sum property}

        90 +x = 180       {Subtract 90 from both sides}

               x = 180 - 90  

               x = 90

120 +y + y = 180        {Angle sum property}

      120 +2y = 180       {Subtract 120 from both sides

              2y =180 - 120

               2y = 60      {Divide both sides by 2}

                 y = 60/2

y = 30

5)All sides are equal. so this is a equilateral triangle.

So each angle of equilateral triangle = 60

4x = 60

x = 60/4

x = 15

y = 60 +60   {Exterior of triangle equal sum of opposite interior angles}

y = 120

6) All sides are equal. so this is a equilateral triangle.

So each angle of equilateral triangle = 60

y - 10 = 60    {add 10 to both side}

y = 60 + 10

y = 70

x + 5 = 60    {Subtract 5 from both sides}

x = 60 - 5

x = 55