Mathematics High School

Perform the operation.

(4x² + 8) + (-8x2 – 5x + 2)

Answers

Answer 1

Answer: −

-4x^2-5x+10

Step-by-step explanation:

Answer 2

Answer: -4x^2 -5x + 10

Step-by-step explanation:  

Simplify the expression.

Related Questions

Please help me!!!!!
What are the vales of x and y?

Answers

Answer:

i only no y, y=4 I hope this helps

In Mr. Romero's auto shop class, the ratio
of boys to girls is 5:2. If there are 35 students
in the class, how many are boys?

Answers

Answer:

boys 5:2 girls

add the ratio parts together

5 + 2 = 7

divide the total number of students by the total number of parts

35/7 = 5

now multiply each part of the ratio by 5

boys 25

girls 10

there are 25 boys

A and b are two cyclinders that are mathematically similar. The area of the cross section of cyclinder A is 18cm^2 work out the volume of cyclinder b

Answers

Answer:

THE VOLUME IS 36 CM2, its pretty easy

Step-by-step explanation:

Answer:

720cm^3

you have to use cubed on mathswatch not( ^ )or you will not get he point

can you help me with my stem and leaf question?

Answers

Answer:

Step-by-step explanation:

Given data set is 3, 8, 12, 12, 14, 20, 21, 23, 26, 34.

So the stem and leaf set will be,

0 |   3    8

1  |   2    2   4

2 |   0    1    3   6  

3 |   4

Key :

1 | 4 means 14

Hey guys, I need this question in about 2 minutes, please help.

Answers

Answer:

Well I got 9 log 10 (2)/ 3-3log10 (5)

Please correct me if I am wrong

Step-by-step explanation:

You have to apply the rule alogc (b) (b^a)

= [tex]\frac{log10(\sqrt{8))^{4}-log10((\frac{1}{2}))^{3}) } }{3-6log10(\sqrt{5}) }[/tex]

\frac{\log _{10}\left(\frac{\left(\sqrt{8}\right)^4}{\left(\frac{1}{2}\right)^3}\right)}{3-6\log _{10}\left(\sqrt{5}\right)}

Which sentence best describes the equation: z = 18 + 96

Answers

Answer:

A

Step-by-step explanation:

Z is the same as the answer to the equation so if you add 18 and 96 together you will get z

also sum means adding

Answer: a

Step-by-step explanation:

the answer has addition and it says 18+96=z so i believe that theyre trying to say that whatever you add is gonna equal z so i believe the correct answer is a (:

Please help im running out of time

Answers

Answer:

B

Angle on a straight line is 180 degrees. Angle ABC is 90. You're given angle FBE as 47. So, it is 180-(90+47)= 43. That's the angle ABF.

Danny "spent $37.35 on 15 gallons of gasoline. What was the price per gallon?"

Answers

Answer:

$2.49

Divide the total by the gallons, then you get the price per gallon

Step-by-step explanation:

Z + y + 0 = z + y equals to what?

Answers

Answer:

y=0/0

Step-by-step explanation:

Step 1: Add -y to both sides.

y+z+−y=y+z+−y

z=z

Step 2: Add -z to both sides.

z+−z=z+−z

0=0

Step 3: Divide both sides by 0.

0/0=0/0

y=0/0

Find the perimeter of a 35° slice of pizza that has a radius of 8 inches.

Answers

9514 1404 393

Answer:

  20.9 inches

Step-by-step explanation:

The perimeter length is the sum of the lengths of the two straight edges and that of the curved edge.

  P = r + r + rα . . . . . where α is the central angle in radians

35° is (35°/180°)π radians, about 0.6109 radians

Then the perimeter is ...

 P = r(2 +α) = (8 in)(2 +0.6109) ≈ 20.9 in

The perimeter of the slice is about 20.9 inches.

Susan is making a large batch of salsa.
She can spend no more than $30 on ingredients. She buys all ingredients except for tomatoes for $6.50. Tomatoes cost $2 per pound.
How many pounds of tomatoes,x, can she buy?

INEQUALITY THAT REPRESENTS THIS SITUATION
30>= 6.50+2x​

Answers

Answer:

She can buy 0 to 11.75 pounds of tomatoes.

Step-by-step explanation:

Consider the provided information.

It is given that Susan can spend no more than $30 on ingredients. She buys all ingredients except for tomatoes for $6.50. Tomatoes cost $2 per pound.

It means she can only spend less than or equal to $30. Let x be the pounds of tomatoes she can buy.

So, the required inequality should be:

[tex]30\leq 6.50+2x[/tex]

Now simplify the inequality.

[tex]30-6.50\leq 2x[/tex]

[tex]23.5 \leq 2x[/tex]

[tex]11.75\leq x[/tex]

Hence, she can buy 0 to 11.75 pounds of tomatoes.

Melissa had d dollars. She earned 5 more dollars babysitting

Answers

Answer:

D + 5

Step-by-step explanation:

Is this is an expression you have to write the answer would be d + 5

What is the slope of the line graphed on the coordinate plane?
Put your answer in the box

Answers

Answer:

-8

Step-by-step explanation:

As we know, slope is rise over run. We count up and over until we get to the next dot. To get to the next dot, we count 8 up and -1 over (since we go to the left, not the right). We can put this in a fraction (rise/run). That gets us 8/-1, which can be simplified to -8.

Choose the best method to solve the system of linear equations. Then choose a reason to justify your answer choice. x−3y=6 x−3y=−3

Answers

Answer:

No solution.

Step-by-step explanation:

The given equations are :

x−3y=6 ...(1)

x−3y=−3 ...(2)

We need to solve the above equations.

The above two lines are parallel. Forparallel lines,

[tex]\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}\ne \dfrac{c_1}{c_2}[/tex]

Here,

[tex]\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}[/tex]

It means, the above equations have no solution.

State if the three numbers can be the measures of the sides of a triangle. Show your work
1) 7,2,6
2) 11,2,11

Answers

Answer: 2

Step-by-step explanation:

Answer is 2 (11,2,11)

Help me with this pls

Answers

Answer:

x=55

Step-by-step explanation:

90 degree angle

90-35=55

The answer is 55.

x and 35 are complimentary angles, meaning they are equal to 90. To find the value of x, you just need to subtract 35 from 90!

Factor the expression.
49.12
- 16
O A
(4x + 7)(4x - 7)
B. (7x + 4)(7x-4)
C. (7x-4)(7x-4)
OD. (4x-7)(4x - 7)

Answers

Step-by-step explanation:

Difference of squares: A² - B² = (A + B)(A - B).

Therefore 49x² - 16 = (7x)² - (4)² = (7x + 4)(7x - 4).

The correct answer is Option B.

Answer is B. Hope this helps :)

I have nothing good to offer, but please help!

What is true about all the points on the y-axis in Quadrant 1?

(Look at picture for details)

Answers

does the question have a photo attached on your screen because it sounds like the image you included is not completed

Noah ran 2 1/2 miles in 3/5 hour. How far does he run in 1 hour?

Answers

Step-by-step explanation:

0.6 hours = 2.5 miles

=> 1 hour = 2.5 miles * (1/0.6) = 4.16 miles.

Hence Noan runs 4.16 miles in 1 hour.

(or 25/6 miles)

Plz help i am confusion

Answers

Answer:

NO solution , the -17y at both sides will cancel ,so no variable left

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

-17(y-2)=-17y+64

-17y+34=-17y+64

34=64

therefore

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Which expression is equivalent to 2(x + 7) - 2(9x - 0.4)?

A -16x + 13.2
B -16x + 14.8
C -16x + 14.8
D -16x + 14.8

Answers

Answer:

-16x+14.8

Step-by-step explanation:

2(x+7)-2(9x-0.4)

2x+14-18x+0.8

-2x+14-18x+0.8

14-16x+0.8

14+0.8-16x

14.8+-16x

please help me and ill mark brainlist also explain

Answers

Answer:

there is no question I'm sorry but I will take brainlyist

Help me!!!!!!! What are the inequalities number 7-8

Answers

(1/2) > (1/3) > (1/5)

0.1 < 0.15 < 0.2

Which of the following are composite numbers check all that are true

Answers

Answer:

33, 49, and 21.

Step-by-step explanation:

its 33, 49, and 21

hope this helps

Could anyone help me out please?

Answers

The answer is $95.55

Answer:

19.6

I am not sure of my answer

3. Angle g and angle h are:

A. adjacent
B. congruent
C. complementary
D. vertical

Answers

Answer is A: Adjacent

Answer: Adjacent angle you can look it up you know that right

A bag of rice lasted 7 days for 77 children how long will it last for 11 children​

Answers

1 day

You have to divide 77 to 7. It will be 11. That's why its 1 day...

Please help whats 1 4/6 plus 3

Answers

Answer:

4 and 4/6

Step-by-step explanation:

The graphs of the equations 4x - y = 6 and x + y = 4 intersect at
the point whose coordinates are
A. (2,-2)
B. (5, -1)
C. (1,3)
D. (2,2)

Answers

Solve by Substitution
D. X=2 Y=2.

Given h(x) = 5x + 2, find h(-6).

Answers

h(-6)=5(-6)+2 = -30+2= -28
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