20. Given f(x) = 2x + 9, if f(x) = 15, find x.

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[tex]h(x) = 2( {x}^{2} + 5) + 10 [/tex]

[tex]h(x) = 2 {x}^{2} + 10 + 10[/tex]

[tex]h(x) = 2 {x}^{2} + 20[/tex]

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[tex]h(13) = 2 \times ({13})^{2} + 20[/tex]

[tex]h(13) =( 2 \times 169 )+ 20[/tex]

[tex]h(13 )= 338 + 20[/tex]

[tex]h(13) = 358[/tex]

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Answer:

10

Step-by-step explanation:

Answer:

can't see the answers but I think it's 2.5

Answer:

The answer is true.

Step-by-step explanation:

Answer:

[tex]\theta \:=43.76^{\circ \:\:}[/tex]

Step-by-step explanation:

The right triangle has the hypotenuse = 18

Let 'Ф' be the missing angle

we know that

cos Ф = adjacent/hypotenuse

Here,

so

cos Ф = adjacent/hypotenuse

[tex]cos\:\theta \:=\frac{13}{18}[/tex]

[tex]\theta \:=\cos ^{-1}\left(\frac{13}{18}\right)[/tex]

   [tex]=43.76^{\circ \:}[/tex]

Therefore, the missing angle is:

[tex]\theta \:=43.76^{\circ \:\:}[/tex]

Answer:45

Step-by-step explanation:

the factors for 90= 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

the factors for 135=1,3,5,9,15,45

the highest numbers that is divide both numbers is 45

Answer:

1) Simple interest is 72 dinars

2) Total amount after 3 years is 672 dinars.

Step-by-step explanation:

Principal Amount P = 600 dinars

Interest Rate= 4% = 0.04

Time = 3 years

i) Simple Interest

The formula used to calculate interest is [tex]I=P\times r \times t[/tex]

Putting values and finding interest

[tex]I=P\times r \times t\\I=600\times 0.04 \times 3\\I=72[/tex]

So, simple interest is 72 dinars

ii) Total amount after 3 years ​

The formula to calculate total amount is: [tex]A=P(1+rt)[/tex]

Putting values and finding future amount A

[tex]A=P(1+rt)\\A=600(1+(0.04*3))\\A=600(1+0.12)\\A=600(1.12)\\A=672[/tex]

So, Total amount after 3 years is 672 dinars.

The answer is a. y=6 :)

Answer:

d = 8.062258

Step-by-step explanation:

d=√ (3−(−4))2+(3−(−1))^2

d=√ (7)^2+(4)^2

d=√ 49+16

d=√ 65

d=8.062258

Answer:

9

Step-by-step explanation:

It's really not that hard

Answer:

b

Step-by-step explanation:

Answer:

[tex]12-20x^{2}[/tex]

Step-by-step explanation:

[tex]4(3-5x^{2}) = (4*3)-(4*5x^{2} )[/tex]

[tex]4*3 = 12[/tex]

[tex]4*5x^{2} =20x^{2}[/tex] since you only multiply the numbers

[tex]12-20x^{2}[/tex]

Answer:

First is 5/2

second is 1

Answer:

1. A. slope = 5/2

2. A. slope = 1

Step-by-step explanation:

To find the slope you can input the x and y values of two points into this expression: [tex]\frac{y2 -y1}{x2 - x1}[/tex]

1. To find the slope, I'm going to use points (2, 3) and (4, 8). Let's input them into the expression:

[tex]\frac{8-3}{4-2}[/tex]

Simplify:

8 - 3 = 5

4 - 2 = 2

The slope is 5/2.

2. To find the slope, I'm going to use points (0, 0) and (1, 1). Let's input them into the expression:

[tex]\frac{1-0}{1-0}[/tex]

Simplify:

1 - 0 = 1

1 - 0 = 1

The slope is 1/1, or just 1.

Answer:y=14

Step-by-step explanation:

Answer:

25% decreased by 60% is 10

Step-by-step explanation:

New value =

25 - Percentage decrease =

25 - (60% × 25) =

25 - 60% × 25 =

(1 - 60%) × 25 =

(100% - 60%) × 25 =

40% × 25 =

40 ÷ 100 × 25 =

40 × 25 ÷ 100 =

1,000 ÷ 100 = 10

hope this helps :)

Answer:

Part 1:

Total number of comments divided by the expenses

Total number of likes divided by the expenses.

Part 2:

Yes. According to both definitions, website A has more user engagement per a single dollar expense.

Step-by-step explanation:

User Engagment: Likes and comments

Website A:

500 comments/$20,000= .025

3500 likes/$20,000= .175

Website B:

450 comments/$47,000= .0095

3500 likes/$47,000= .07

Website A has more user engagement per a single dollar expense.

Answer:

Top Answer Worked for me

Step-by-step explanation:

Answer:

( h − 4 ) ( h + 12 )

Step-by-step explanation:

I'm not even sure if this helps but it factored

Answer:

B. 9

Step-by-step explanation:

3^4/3^2

lets expand it

3 * 3 * 3 * 3/ 3 * 3

just get rid the 3's needed to get rid of the denominator which is 2, so get rid of 2 threes from the top

3 * 3 = 9

And it's okay, I dislike math too. Hope you feel better.

Answer:

b

Step-by-step explanation:

Answer:

  107.5° and 72.5°

Step-by-step explanation:

  x + y = 180          same side interior angles of two parallel lines add up to 180

  x - y = 35            

___________

     2x = 215                           add above two equations

       x = 107.5°                       divide by 2 to isolate x

Substitution to find y:

  x + y = 180

  107.5 + y = 180

              y = 72.5°

The measure of these two angles is 107.5° and 72.5°.

Given that,

Based on the above information, the calculation is as follows:

x + y = 180          

And,

x - y = 35            

So, after solving it, it comes

2x = 215                            

x = 107.5°                  

So, y = 180 - 107.50 = 72.5

Therefore we can conclude that the measure of these two angles is 107.5° and 72.5°.

Learn more: brainly.com/question/13549064

Therefore we can conclude that

Answer:

3.7 oz more of cereal

Step-by-step explanation:

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

Answer:

50

Step-by-step explanation:

2(Mr stack's speed) = Coach Pugh's speed - 5mph

Mr stack's speed = (105mph - 5mph)/2

Mr stack's speed = 100mph/2

Mr stack's speed = 50mph

Answer:

Step-by-step explanation:

250 for place  4 for books each.

If they charge 14 per person, 4 of that goes for the books and 10 will be applied to the rental fee.

250/10= 25 people to break even. Any people beyond that  is a profit of 10.00 since the other 4 will still go to the books.

Answer:

200 pounds 20% raisins

800 pounds 5% raisins

Step-by-step explanation:

Let number of 5% be x

and number of 20% be y

x + y = 1000

Also;

5% of x + 20-% of y = 8% of 1000 pounds

= 0.05x + 0.2y = 80

From i , x = 1000-y

0.05(1000-y) + 0.2y = 80

50-0.05y + 0.2y = 80

0.15y = 30

y = 200

x = 1000 - y

= 1000-200 = 800

He will use 800 pounds for a mix that is 5% raisins and 200 pounds for a mix that is 20% raisins.

Given that,

A distributor wants to make 1000 pounds of trail mix that is 8% raisins.

He will use a mix that is 5% raisins and a mix that is 20% raisins.

We have to determine,

How many pounds of each should he use.

According to the question,

Let number of 5% raisins be x,

And number of 20% raisins be y.

Then,

He will use a mix that is 5% raisins + A mix that is 20% raisins = Distributor trail mix.

[tex]x + y = 1000[/tex]

And,

He will use a mix that is 5% raisins of x + and a mix that is 20% raisins of y =  1000 pounds of trail mix that is 8% raisins.

5% of x + 20% of y = 1000 of 8% raisins

[tex]0.05 x+ 0.20y = 80[/tex]

On solving both the equation,

[tex]x + y =1000\\\\x = 1000-y[/tex]

Substitute the value of x in the equation 2,

[tex]0.05 (1000-y) + 0.20y = 80\\\\0.05 \times 1000 - 0.05y + 0.20y = 80\\\\50 + 0.15y = 80\\\\0.15y = 80-50 \\\\0.15y = 30\\\\y = \dfrac{30}{0.15}\\\\y = 200[/tex]

Substitute the value of y in the equation 1,

[tex]x + y = 1000\\\\x + 200 = 1000\\\\x = 1000-200\\\\x = 800[/tex]

He will use x = 800 pounds a mix that is 5% raisins and y = 200 pounds for a mix that is 20% raisins.

Hence, He will use 800 pounds for a mix that is 5% raisins and 200 pounds for a mix that is 20% raisins.

To know more about Equations click the link given below.

https://brainly.com/question/18916524

Answer:

None

Step-by-step explanation:

The minimum requirement is 180.

Answer: 2/9

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

b should be the answer

Answer:

A and E are the answers

Answer:

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Step-by-step explanation:

REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE