Solve the math problem

Answer:

Step-by-step explanation:

C(x) = ax2 + bx + c

C(x) = x2  -19x + 50

8150 = x2  -19x + 50

x2  -19x + 50 = 8150

x2 -19x-8100 = 0

this is a quadratic equation, solved as

x = −b ± √(b2 − 4ac) 2a ·

or

x = −(-19) ± √((-19)x(-19) − 4(1) x(-8100))/2 ·

x= 19± √((-19)x(-19) − 4(1) x(-8100))/2

x = 100

Answer:

On the graph when x is -4, y is 4. So f(-4)=4.

:)

Answer:

-√2

Step-by-step explanation:

For the typing purpose I replaced θ with n in the calculation

[tex]\lim_{n \to \frac{\pi }{4}} \frac{cos n-sin n}{\frac{\pi }{4} } ...limits L'Hopital's Rule\\= \lim_{n \to \frac{\pi }{4}} \frac{-sin n-cos n}{1 } ... plug. in . \frac{\pi }{4} \\= - sin \frac{\pi }{4} - cos \frac{\pi }{4}\\= - \frac{\sqrt{2} }{2} - \frac{\sqrt{2} }{2}\\= \frac{- 2\sqrt{2}}{2} \\= - \sqrt{2}[/tex]

Answer:

Add x to both sides so the problem will become -2y =8+x, then you divide both sides by -2 to get y by itself. You will now have y=-4+-x. you'll need to double check this but it should be right. remember that slope intercept form is y=mx + b

Answer:

He lost $12.

Step-by-step explanation:

Money Earned=$18

Money Spent=$30

Here, Money Spent is larger than Money Earned, which means that he lost money.

$30-$18

$12

He lost $12.

Answer:

he made money and lose money this week

Step-by-step explanation:

HOpe this helps

Answer:

1: -6m,

2: 10.3-12m,

3: 28a-7,

4: 5/8h+7

Step-by-step explanation:

so, a helpful thing with these, is to add like terms. with #4, we see that the letter m is with both of the numbers, and since we are adding a bigger negative to a positive, the answer will be a negative with the number. for 6, 2 numbers have an x, and 2 do not. so we add or subtract the like pairs, as in the ones with the letters, and then a separate one for the one with no letters. for the last one, you always want to have a "common denominator" which is the number on the bottom. because 8 is already on the bottom, and 4 is divisible by 8 by 2, we inversely multiply the top and bottom numbers for the "3/4" and would get "6/8" to match the bottom denominator for "1/8" hope this helps

Answer:

54 degrees and 126 degrees

Step-by-step explanation:

hope this helps i'm 9 but I have a 8th grade math knowledge.

Answer:

is 20

Step-by-step explanation:

hi the answer is .......

so what you have to do is that you have to add 3 to 3 =6 and then you have to add 7 to 7 = 14 then you have to add 14 to 6= 20 and this is going to be your answer

[tex]x + 18 = 54 \\ = > x = 54 - 18 \\ = > x = 36[/tex]

Option A. x = 36

Hope it helps

ray4918 here to help.

_____________

[tex] \: [/tex]

x + 18 = 54

x = 54 - 18

x = 36✔ (A.)

Answer:

B

Step-by-step explanation:

Answer:

18/29

Step-by-step explanation:

The probability that a student chosen randomly from the class plays basketball or baseball is 18/29

The given parameters are:

The number of students that play basketball or baseball is:

Basketball or Baseball = Students - Neither

This gives

Basketball or Baseball = 29 - 11

Basketball or Baseball = 18

The probabilty is then calculated as:

P = Basketball or Baseball/Students

This gives

P = 18/29

Hence, the probability that a student chosen randomly from the class plays basketball or baseball is 18/29

Read more about probability at:

https://brainly.com/question/251701

Answer:

Step-by-step explanation:

Andrew likes to solve puzzles.

       It took him 4.5 minutes to complete one puzzle with 18 numbers.

       It took him 6 minutes and 24 seconds to complete a different puzzle with 32 numbers.

a     For each puzzle work out how many seconds it took Andrew to complete one number.

b     Use your answer to part a to decide which puzzle Andrew completed faster.

Answer:

A = 1.5, B = 10, C = 0, D = 20

Step-by-step explanation:

A = 10 * 15% = 1.5

b = 10

c = 0

(10 + x) * 5% = 1.5

0.5 + 0.05x = 1.5

0.05x = 1

x = 20

(assume 'x' is added solution)

d = 20

Answer: A. 1.5 B. 10 C. 0 D. X

78

Step-by-step explanation

by adding all the number and divide by the number of number

Answer:

78

Step-by-step explanation:

add all and divide by 7

Answer:

2+3n

Step-by-step explanation:

Answer:

No the lines are not perpendicular

Step-by-step explanation:

Slopes are not perpendicular reciprocals

Answer:

10

28

73

63

Step-by-step explanation:

[tex]\large\underline{\sf{Solution-}}[/tex]

We need to solve,

[tex]\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}[/tex]

We can write the above mentioned expression as,

[tex]\sf\longmapsto\dfrac{\sqrt{2\times2\times2\times2\times7}-\sqrt{2\times2\times2\times5}}{\sqrt{2\times2\times5}-\sqrt{2\times2\times7}}[/tex]

So,

[tex]\sf\longmapsto\dfrac{\sqrt{4\times4\times7}-\sqrt{4\times4\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}[/tex]

So,

[tex]\sf\longmapsto\dfrac{\sqrt{4^2\times7}-\sqrt{4^2\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}[/tex]

Hence,

[tex]\sf\longmapsto\dfrac{4\sqrt{7}-4\sqrt{5}}{2\sqrt{5}-2\sqrt{7}}[/tex]

Taking common in respective terms,

[tex]\sf\longmapsto\dfrac{4(\sqrt{7}-\sqrt{5})}{2(\sqrt{5}-\sqrt{7})}[/tex]

On cancelling 4 with 2,

[tex]\sf\longmapsto\dfrac{4\!\!\!/^{\:2}(\sqrt{7}-\sqrt{5})}{2\!\!\!/(\sqrt{5}-\sqrt{7})}[/tex]

[tex]\sf\longmapsto\dfrac{2(\sqrt{7}-\sqrt{5})}{(\sqrt{5}-\sqrt{7})}[/tex]

Taking (-) common,

[tex]\sf\longmapsto\dfrac{-2(\sqrt{5}-\sqrt{7})}{(\sqrt{5}-\sqrt{7})}[/tex]

So, (√5 - √7) gets cut,

Hence,

[tex]\longmapsto\bf\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}=-2[/tex]

17.5mph

420÷24= 175

Hope this helped you- have a good day bro cya)

Answer:

17.5mph

Step-by-step explanation:

Answer:

put it in desmos.................

Answer:

I think it's (A). 5

I don't know

Answer:

5/8 > 1/2

Step-by-step explanation:

No need number line. Just use fraction walls

Answer:

Your answer is 28

Answer:

The answer is 28

Step-by-step explanation:

Hope it helps

Answer:

1) 40°

2) 140°

3) 140°

5)40°

6)140°

7)140°

8)40°

Step-by-step explanation:

1 = 40 °          [Vertically Opposite angles are equal]

8 = 40 °         [Corresponding Angles are equal]

5 = 8 = 40°   [Corresponding Angles are equal]

7 = 180° - 40° = 140°      [Supplementary angles sum 180°]

6 = 140°           [Vertically Opposite angles are equal]

2 = 140°            [Corresponding Angles are equal]

3 = 140 °           [Vertically Opposite angles are equal]

Answer:

The Reconquista and the Inquisition are two very important events that happened in the middle ages. The Inquisition was when the Catholic church officials tortured Jews and Muslims to convert to Christianity. The Reconquista was when the people from Spain and Portugal united to take back their land from Muslims.

9514 1404 393

Answer:

  the triangles are congruent

Step-by-step explanation:

The side marked congruent is between the angles marked congruent, so the triangles are congruent by the ASA congruence postulate.

Answer:

Equation of Parallel Line:  y = -7x - 44

Equation of Perpendicular Line:  y = x/7 - 8/7

Step-by-step explanation:

1) Parallel

Substitute (-6, -2) to find C

-2 = -7(-6) + c

-2 = 42 + c

-2 - 42 = c

c = -44

y = -7x -44

2) Perpendicular

Negative reciprocal

Substitute (-6, -2) to find C

-2 = 1/7(-6) + c

-2 = -6/7 + c

-2 + 6/7 = c

c = -8/7

y = 1/7x - 8/7 or

y = x/7 - 8/7

Answer:

https://www.letsanswers.com/a-compound-that-dissociates-dissolves-to-form-ions-weakly-is-exposed-to-an-electric-current-attached-to-a-light-bul/

Step-by-step explanation:

link for the information