Mathematics High School

Let f(x)=-3x+7 and g(x)=2x^2-8
Find f(x)+g(x)
Choose the best answer
A)-2x^2 - 3x +15
B) -x^2 - 1
C) 5x^2 +15
D) 2x^2 - 3x - 1​

Answers

Answer 1

Answer:

D

Step-by-step explanation:

Related Questions

What is the value of f?

−1/8f−3/4−1/4f=11

Answers

Answer:

equals x cuz x is in definite number

Step-by-step explanation:

Fred spent half of his allowance going to the movies. He washed the family car and earned 6 dollars. What is his weekly allowance if he ended with 16 dollars

Answers

Answer:

His weekly allowance is 20 dollars

Step-by-step explanation:

the full equation would be (with x equaling weekly allowance):

(x÷2)+6=16

subtract 6 from each side to get

(x÷2)=10

then multiply each side by 2

x=20

Weekly allowance is $10. He ended with $16, so subtract 6 from 16 to get 10. $10 was the amount he still has left, and since he spent half multiply 10 by 2 to get $20

Evaluate the expression for k = –1.

–14k =

Answers

Solution:Given, k = -1Therefore, -14 k= -14 (-1)= 14Answer:

14

are these right if not tell me what i got wrong and the answer

Answers

What are the questions

Please help me with this homework

Answers

The answer is 1.25.

The equation for slope is rise over run. Y is the rise and X is the run. The point equation is (y2-y1)/(x2-x-1) = slope.

Plugging in the numbers: (-4-1)/(-4-0) = 1.25

Answer:

5/4

Step-by-step explanation:

Slope = Rise↕/Run↔

In other words, from coordinates (-4,-4) go up 5 units then go right 4 units, to get to coordinates (0,1).

Hope this makes sense :)

Suellyn correctly evaluates the expression.

(14.9−1)(−1)

Which statements can Suellyn make?

Select all correct statements.


The first factor is equal to −14.9 .

The first factor is equal to 14.9.

The product is −14.9

The product is 14.9.

Answers

Answer:

The first factor is equal to −14.9 .

The product is 14.9.

Step-by-step explanation:

This is what i answered in k12 and got it correct.

The product is −14.9. Therefore, option C is the correct answer.

The given expression is 14.9(-1).

What is an expression?

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Product of positive and negative integers is negative.

Now, 14.9(-1)=-14.9

The product is −14.9. Therefore, option C is the correct answer.

To learn more about the product of integers visit:

https://brainly.com/question/16941498.

#SPJ5

Which set of numbers can represent the side lengths, in ce
O 8, 12, 15
O 10, 24, 26
O 12, 20, 25
15, 18, 20
What’s the answer

Answers

Answer:

23 cuz it's like a parten

PLEASEEE HELPPPPPn nxndhdndjd

Answers

Answer:

In a total triangle, there are 180 degrees.

So we add the given degrees and add a variable(our unknown value) to make it equal 180

65 + 57 + X = 180

add like terms

122 + X = 180

inverse property of addition is subtraction

-122       -122

X = 58 degrees

Answer:

The answer is 58.

Step-by-step explanation:

65+57=122

180-122=58

A number is multiplied by 3. Next, 6 is added to the product. Then, the sum is divided by 8. If the result is 6, what is the number?

Answers

Answer:

14

Step-by-step explanation:

14 x 3 = 42

42 + 6 = 48

48 ÷ 8 = 6

Therefore, the answer is 14.

Answer:

14

Step-by-step explanation:

let us call the number x for now

the number (x) is multiplied by 3 to give us

3x

then,

it is added to 6 to give

3x + 6

then, our sum is divided by 8:

(3x + 6) / 8

according to the question, the result is 6

therefore,

3x + 6 / 8 = 6

if we cross multiply,

3x + 6 = 8 ( 6 )

3x + 6 = 48

collecting like terms,

3x = 48 - 6

3x = 42

divide through by 3 to give

3x / 3 = 42 / 3

x = 14

therefore, x = 14

to reassure us of our answer,

since (3(x) + 6) / 8 = 6

and we know that x = 14,

therefore,

(3(14) + 6) / 8 = 6

(42 + 6) / 8 = 6

48 / 8 = 6

6 = 6

therefore, we are now sure that x = 14

hope this helps

thanks

Can someone please help me
I need this as soon as possible
No links please and don't answer if you don't know what the answer it ​

Answers

Answer:

#5. m<NMO = 44 and X = 9

Step-by-step explanation:

#5. 5x - 1 + 3x + 4 = 75 (<NMP is the entire angle, which equals 75.)

combine like terms

8x + 3 = 75

subtract 3 from both sides and divide 8.

x = 9

5(9) - 1

m<NMO = 44

#6

Stella and Hazel are the two fastest typists in their computer class. Last week, they had a competition to see whose typing speed was greater.

The table below shows the number of words Stella typed in x minutes during the competition.

Stella's Typing Speed
Time
(minutes) Words
Typed
2 112
4 224
6 336
8 448

The equation below represents the number of words Hazel typed in x minutes during the competition.



Which of the following is true?

A.
Stella typed more words per minute than Hazel during the competition.
B.
There is not enough information to determine the number of words typed per minute during the competition.
C.
Stella and Hazel typed the same number of words per minute during the competition.
D.
Hazel typed more words per minute than Stella during the competition.

Answers

Answer:

b

Step-by-step explanation:

Help me plz! I WILL MARK YOU BRAINLYST

Answers

Answer:

6.5 rounded from 6.53...

to see if this is correct we can:

13.5+9.5+6.5*3 = 42.5

but since we rounded it we can say its 6.5

Answer:

6.55 meters each day

Step-by-step explanation:

You know that in the end the fence must be 42.6 meters long.

On Monday & Tuesday, he installed 22.95 meters of fence. (We know this because 13.45 + 9.5 = 22.95).

So, how much is left? You find that by subtracting 22.95 from 42.6.

42.6-22.95 = 19.65 meters

There are 3 days left of fencing, and these days he will install equal lengths, so you can divide 19.65 meters by 3 days.

19.65 / 3 = 6.55 meters of fence per day

Choose the equation that represents the line passing through the point (−2, −3) with a slope of −6.

y = −6x − 15
y = −6x − 20
y = −6x + 15
y = −6x + 20

Answers

Answer:

[tex]y = mx + c \\ - 3 = - 2( - 6) + c \\ c = - 15 \\ y = - 6x - 15[/tex]

the person above is right give them some slack

The number of times the people in a group surveyed on the street have gone to the cinema this month are:
5, 5, 0, 8, 4, 5, 6, 4, 3, 5, 3, 5, 3, 7, 4, 3, 6, 7, 6, 2, 1, 4, 2, 0, 2
Fill in a frequency table and calculate the mean of the distribution.

Answers

I will help you do it not give the answer,
Ok so we draw a frequency table by like say if we have 3 2’s then we add a column of like 0-5 and say like 3 frequencies,
I know it’s confusing at first but just keep trying
And to find average we add all the numbers and we divide by how many numbers there are.
Hope it helps!
If it doesn’t I will explain again.
Can I get brainliest answer?

1,200 divided by 45=

Answers

Answer:

26.66666666666667

Step-by-step explanation:

1200/45=

Pls solve the right way then I’ll give you 15pts

Answers

Answer:

x=27

Step-by-step explanation:

Aight so the angle of line AB equals 180 degrees. You have 36 degrees plus the right angle (90 degrees) which gets you 126 degrees. Subtract 126 from 180 and you get 54, the remaining value. So if 2x=54, then divide both sides by 2 to get x=27. that should be it

Given f(x) = x^2+9x+18 and g(x)=x+6
Find f(x)-g(x)

Answers

Answer:

x = -6, -2

Step-by-step explanation:

x^2 + 9x + 18 - (x + 6)

x^2 + 9x + 18 -x - 6

x^2 + 8x + 12

(x+6)(x+2)

x = -6, -2

URGENT -
In a class of students, the following data table summarizes the gender of the students and whether they have an A in the class. What is the probability that a student chosen randomly from the class has an A?

Female Male

Has an A 2 5

Does not have an A 3 9

Answers

Answer:

The chances are 36.8% that a random student has an A

Step-by-step explanation:

There are 19 total students and 7 of them have an A. Divide 7 by 19 and convert the decimal value into a percentage.

The second step in the process for factoring the trinomial x2 - 4x - 32
is to:

Answers

Answer:

x 2 - 4 x - 32

( x - 8 ) ( x + 4 )

Step-by-step explanation:

( x - 8 ) ( x + 4 )

3.9 in fration form in fration

Answers

Answer:  39/10          

Step-by-step explanation:

Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,

3.9

1

= (3.9 × 10)

(1 × 10)

= 39/10

The seventh grade math classes are going on a field trip.

The field trip will cost $7 per student plus a one time fee of $55 for a bus to rent.

Write an expression to find the total cost of the field trip for (s) students.

Answers

Answer:

$55*($7s)

Step-by-step explanation:

So there is a one time fee for the bus. Its $55. You only pay for it once. However each student has to pay $7 to get on the bus. So 7 times how ever many students there are plus 55 dollars for the bus rent fee.

IF YOU DONT KNOW THE QUESTION, PLEASE DONT ANSWER IT FOR THE PONIS. I REALLY NEED IT

Answers

Answer:

-3x^2-10x+6

Step-by-step explanation:

the first mistake would be writing the 4x^2 as positive when it's supposed to be negative. the 1 is also supposed to be positive. correct difference would be:

(x^2-10x+5)-(4x^2-1)

=(x^2-4x^2)-10x+5+1

=-3x^2-10x+6

Answer:

Mistake in step 2

Step-by-step explanation:

(x^2-10x+5)-(4x^2-1)

x^2-10x+5-4x^2+1

-3x^2-10x+6

-(3 x^2 + 10 x - 6)

There is a mistake in step 2 in the picture,

-(4x^2-1)

Here, -*- =+ and -*+=-, this is done incorrectly here,

Solve for y.
6x + y = 10

Answers

[tex]6x + y = 10 \\ y = 10 - 6x \\ y = 10 - 6x,x∈ℝ[/tex]

Solved✔︎

Answer:

y = 10 - 6x

Step-by-step explanation:

6x + y = 10

=> y = 10 - 6x

Angles that lie on the same side of the
transversal and on the same side of the parallel Ines. These engles are in
the same "corner and are congruent

Answers

These angles are corresponding angles.

Corresponding angles have the same measure and contain an interior
exterior angle on the same side of the transversal.

which equation best repersents the line graphed above ?

Answers

Answer:

x = -4

Step-by-step explanation:

The line intersects the x-axis at -4.

Answer:

x= -4

Step-by-step explanation:

Given triangle GHJ, the measure of angle G equals
H
measure of angle H equals 30°. Complete the following
statements.
Since angle G is _____
angle, the opposite
side, JH, is________
The order of the side lengths from longest to shortest is______
110°, the measure of angle J equals 40°, and the
G

Answers

I do not know the answer sorry

√4x^2/3y
Please show work if you can

Answers

Answer:

√16x/3y

Step-by-step explanation:

√4x^2 = √16x /3y = can't be simplified further

please give the answer! thank you!! <3 :D​

Answers

Answer:

8x Should be the answer to the question

Mikah bought a dozen cupcakes for her friend's birthday. If she paid $3.48 for the cupcakes, what was the cost per cupcake?
A.$0.28
B.$0.29
C.$1.80

Answers

Answer:

29 cents each

Step-by-step explanation:

B because you could divide $3.48 by 12 because there are 12 cupcakes in a dozen

In 5 games, a footballer scores: 1 2 1 3 0 What is the median? What is the range?
​

Answers

Answer:

Median= 1

Range=  2

Step-by-step explanation:

Median is the middle number, 1

The Range is the highest number subtracted from the lowest number (3-1)

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