Mathematics Middle School

Simplify the algebraic expression and show how you did it -
3k - 7k + 7 - 10k

Answers

Answer 1

Answer:

-14k+7

Step-by-step explanation:

Multiply k and 3

Multiply k and 1

The k just gets copied along.

The answer is k

k

3*k evaluates to 3k

Multiply k and 7

Multiply k and 1

The k just gets copied along.

The answer is k

k

7*k evaluates to 7k

3*k-7*k evaluates to -4k

3*k-7*k+7 evaluates to -4k+7

Multiply k and 10

Multiply k and 1

The k just gets copied along.

The answer is k

k

10*k evaluates to 10k

-4k - 10k = -14k

The answer is -14k+7

3*k-7*k+7-10*k evaluates to -14k+7

The final answer is

-14k+7

(I used a calculator called WebMath :) Sorry if its really confusing!   )

Answer 2
-14k + 7 .
combine like terms 3k - 7k = -4k + -10k
then get -14k the just bring the 7 down to get -14k + 7 .. hoped it helps .

Related Questions

I will give Branliest to the person who answers it correctly. Please look at the screenshots I took and answer the question the best you can.

Answers

Hey y’all are you doing this weekend I’m going on my way home I love y’all bye love y’all good thanks bye

Can y’all help me with this answer choice question plz

Answers

Answer:

G, 113.04

Step-by-step explanation:

To find the area of the head of the nail you need to use the*

> A= π*r^2* A equals area, π equals pi(3.14) and then you square your raidius, which is 6 in your case.

π*r^2

plug in your six as the *r

π*6*^2

solve 6^2=36 and multiply that by your π which is 3.14

3.14*36

=113.04

Hope that helped!! :)

H) 28.26 is your answer

help pls due today correct answer = brainliest

Answers

Answer:

3 grams

Step-by-step explanation:

Answer:

It would be 3 grams

The value of 2^3 + 4^2 = ___. Numerical Answers Expected! Answer for Blank 1:

Answers

Answer:

Step-by-step explanation:

2^3+4^2

2(2)2+4(4)

8+16

24

Find the volume of the prism.

Answers

Answer:

You do length times width times hight

Step-by-step explanation:

So mutliply 6 times 20 times 4 to get your answer

Answer:

480

Step-by-step explanation:

Because the formula is b*h*w

so, 6×4×20=480


Amy's school is 4 miles from her house. Jane lives between Amy's house and the school.

After school, Amy walked for 40 minutes at a constant rate to get to Jane's house. The girls stayed at jane's house for half an hour, then Arny borrowed jane's bike and rode home at a constant rate.

She arrived home 1 1/2 hours after school ended.

A) Assume Amy rides her bike faster than she walks.

Use the grid below to graph a function representing Amy's trip.

Answers

Answer:

4 x 40 = 160, 160 x11= 1760+2= 1762

Step-by-step explanation:

Please help me I can't get anymore wrong :)

Answers

Answer:

C

Step-by-step explanation:

I hoped i helped please don't be mad if I'm wrong TT>TT

I could be C

PS: sorry if I’m wrong

What is the solution to the system

A. (-3,1)
B. (0,3
C. (1,3)
D. (1,-1)

Answers

Answer:

C

Step-by-step explanation:

the lines are intersecting at 1,3

Answer:

C

Step-by-step explanation:

Find the perimeter of the shape. Please help, no scams

Answers

pretty sure it is 52 :)
Yeah I’m pretty sure the answer is 52

A line is reflected, what line is the results?

Answers

Answer:

A I think

Step-by-step explanation:

I dont really get the question so im not sure

Answer:

C.

Step-by-step explanation:

The question states that a LINE is reflected, just with this information we know that A. is incorrect because it is curved.

At first, when looking at B., it seems as though it could work, until you notice that it starts somewhere, but doesn't end, thus it is not a LINE. So, we can count B as incorrect as well.

When looking at C, it it a straight line, and has a beginning and and end, which means that so far, it is the most likely the line.

Then, we look at D. When looking at D, we can tell that it is a straight line, however, it has no beginning and no end, thus it can't be the answer.

Now, we know that C is the only possible answer for this question.

Can someone pls help! 20 points!

Answers

Your answers:

J:
m= -4/3
b= 5

K:
m= 2
b= -2

L:
m= 3
b= 0

M:
m= -1/3
b= -2

N:
m= 1/4
b= 5

Because:

m= slope (rise/run)
b= y-intercept (which is where the line hits the y axis)

plz hury Which answer choice shows the weight of the boxes in order from greatest to least?
A. 11.09, 11.283, 11.301, 12.08, 12.8
B. 12.08, 12.8, 11.301, 11.283, 11.09
C. 12.8, 12.08, 11.301, 11.283, 11.09
D. 11.09, 11.283, 11.301, 12.8, 12.08

Answers

Answer:

Basically for this problem, we want to order these five numbers from greatest to least.

So, we should have: 12.8, 12.08, 11.301, 11.283, 11.09.

This would make C the correct answer.

Let me know if this helps!

MATH SMARTIES (PLZ ANSWERE IF YOU KNOW WHAT A TREE DIAGRAM IS)I NEED HELP CAN YOU TELL ME IF MY ANSWER IS CORRECT AND IF NOT CORRECT COULD YOU PLZ TELL ME THE CORRECT ANSWERE

Answers

Answer:

C

Step-by-step explanation:

1/2 * 1/2 * 1/2 = 1/6

Hope this helps

Is C I just read the other comments

WIL GIVE BRAINLIEST IF CORRECT PLEASE HURRY

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

If you simplify [tex]\frac{5}{5}[/tex] it equals 1 and 1* any number Is that number.

What is the base, x, of the isosceles trapezoid rounded to the nearest hundredth of a centimeter?

Help would be much appreciated! Thank you!

Answers

Answer:

18.58 cm

Step-by-step explanation:

8^2 - 6^2 = sqrt 28

sqrt 28 = 5.29

8 + 5.29 + 5.29 = 18.58

Answer:

Geometry, Trapezoid Calculator, Calculates Area, Diagonals, Angles, height, altitude, perimeter; ... both base lengths and the area. ... A trapezoid has bases that are 30 and 55 centimeters in length and the non-parallel sides (or legs) are 15 and 20 centimeters. ... The isosceles trapezoid has both legs of equal length.

Step-by-step explanation:

What is the surface area of the geometric figure that can be formed by the net?

o 36 cm²
o 60 cm²
o 66 cm²
o 72 cm²

Answers

Answer:

o 60cm^2

Step-by-step explanation:

(2x3)2 + (6x3)2+ 6x2

While shopping for​ clothes, Alex spent ​$40 less than 2 times what Gina spent. Alex spent ​$14. Write and solve an equation to find how much Gina spent. Let x represent how much spent.

Answers

Answer:

27$

Step-by-step explanation:

14 = 2x - 40

14 + 40 = 2x

54/2 = x

x  = 27

Sorry I need points and someone else posted the answer

150 students voted in your grade, but that is only 75% of the total students in your grade. What is the total amount of students in your grade?

Answers

200 hundred students total.
The correct is 200 students total

There are approximately 3,000 bass in a lake. The population grows at a rate of 2% per year. Round answers to the nearest tenth.

From Year 1 to Year 4, the average rate of change of the population was about 62.4 bass per year.

From Year 5 to Year 8, the average rate of change of the population was about 67.6 bass per year.

The rate of change increased by about _____ bass per a year.

Answers

Answer:

years 1–4: 62.4 bass per year

years 5–8: 67.6 bass per year

Step-by-step explanation:

If the population in year n is ...

 p(n) = 3000·1.02^n

then the average rate of change from year 1 to year 4 is ...

 (p(4) -p(1))/(4 -1) = 3000(1.02^4 -1.02^1)/3 = 1020·(1.02^3 -1) ≈ 62.4

The average rate of change for years 1–4 is 62.4 bass per year.

___

For years 5–8, the rate of change is similarly computed:

 (p(8) -p(5))/(8 -5) = 3000(1.02^8 -1.02^5)/3 = 1000·1.02^5·(1.02^3 -1) ≈ 67.6

The average rate of change for years 5–8 is 67.6 bass per year.

PLEASE HELP SSSSS
SSDSD

Answers

Answer: 5

Step-by-step explanation:

I think it’s supposed to be

1x25=25

5x5 =2

I don’t know if im right though I can’t really remember ratios

125 cats the answer!!!!!!

MAKING BRAINLIEST ONLY ANSWER IF 100% CORRECT!

Answers

No photo attached ...
there’s nothing to answer...

At Mr. Neely bank, the interest rate offered to clients is 4.5% annually. If after three years at the bank he has earned $50 in interest, approximately how much money did he initially deposit? (Round your answer to the nearest dollar!)

Answers

Answer: 9 dollars.

Step-by-step explanation: Just do 4.5/50 x 100 also could I get brainest?

The person who commented is right

Which statement is true regarding the functions f(x) and g(x)?

Answers

f(x) and g(x) are common fractures

Yuh??
B the slopes are opposite. f(x) is positive while g(x) is negative

Help again, I will give Brainliest to whomever answers right and first!

Answers

Answer:

-7

Step-by-step explanation:

(x²+6x-16)(x-2) = x³+4x²-28x+32

x³+4x²-28x+32 = ax³+bx²+cx+d

a=1; b=4; c= -28; d= 32

-28/4 = -7

Use algebra to find the measure of the angles in the pair of complementary angles below. Show your work.

Answers

Answer:

18 72

Step-by-step explanation:

i think this is right. Hope that helped!

the angles are 18°and 72°

complementary angles form 90°

x + 4x = 90

5x = 90

x = 90/5

x = 18

thus, the angles are 18°and 72°

i need more help!!!!!!!!!!!!!!!!!!!!!! and why do they always have weird shaped gardens
┗|｀O′|┛>:(

Answers

Well the only triangle garden Jeff will be able to make as obtuse one he could be correct if that’s what he wanted

Use the net as an aid to compute the surface area of the triangular prism
i will give brainlest!

Answers

Answer:

135

Step-by-step explanation:

Surface area = perimeter * height

I need help with this question, Please explain how you did it

Answers

Answer:

c

Step-by-step explanation:

the total of the three angles in a triangle add up to 180.

Answer:

C

Step-by-step explanation:

the sum add up to 180 and all of the angles have to be the same

180-87-23=70 so the other angle has to equal 70

Help me pls


The formula to find the kinetic energy of an object measured in joules, E, is E = 1 2 mv 2, where m represents the mass of the object in kilograms and v represents the velocity (or speed) of the object in meters per second. What is the equation to find m in terms of E and v?

A. m = 1 2 Ev 2

B. m = 2Ev 2

C. m = 2E v 2

D. m = E 2v 2

Answers

B!!!!!!!!!!!!!!!!!!!!!!!!!!!
B 100% because I took the test

help help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

I think (-2,0) (0,-2)
(0,-2)

The solution to a system of equations is the portion where they overlap, and (0,-2) is the only answer within the shaded area
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