Mathematics Middle School

Can you guys please help me with this? I will give brainliest and 20 points if you help me.

Answers

Answer 1

Answer:

Step-by-step explanation:

1) a) equations: 3x+21 and 6x -60

b) value of x: 3x+ 21=6x-60 ( set them equal to each other because they are equal, then solve)

3x+21=6x-60

-3x=-81

x= 27

c) replace 27 in both equations to find the angle measure.

3(27)+21= 102

6(27)-60= 102

2) a) equations: 12x-18 and 8x+10

b) value of x: 12x-18=8x+10( set them equal to each other because they are equal, then solve)

12x-18=8x+10

4x=28

x= 7

c) replace 7 in both equations to find angle measure.

12(7) -18 = 66

8(7)+10= 66

angle measure: 66

3) a) equations: 7x+9 and 5x+3

b) value of x: to find value of x here, first know that the these two equations will add up to 180. So, set them up to be equal to 180.

7x+9+5x+3=180

Then solve.

12x+ 12=180

12x=168

x=14

c) angle measure: replace the 14 in the x of the two equations.

7(14) +9 = 107

5(14) +3= 73

add the two angle measure together to see if they add up to 180.

107 + 73 = 180 correct! :D

Related Questions

Need help with a math problem

Answers

Answer:

Step-by-step explanation:

Here's what's going on: some person buying their furniture sees this sofa and it's $1200. That person sees theres a 1/3 off sale! They're happy and buy their sofa with a 20% off discount they got.

Now we have to find out if they should use the 20% off discount before or after adding the 1/3 off sale.

The answer is, they're both the same.

Say they add the 1/3 off sale discount and then use their 20% off discount. Find the 1/3 off sale: 1200 divided by 3 (because fractions are division problems) = 400. 20% of 400: 400 x 0.2 = 80. It's not just 80, because it's not an "only pay 20%" discount. 400 - 80 = 320. They'd pay $320 with this method.

This shows that using the 20% discount after the 1/3 off sale the customer spends $320.

Now let's calculate what happens if they use the discount after the 1/3 off sale. 20% of 1200: 1200 x 0.2 = 240. 1200 - 240 = 960. Now adding the 1/3 off sale: 960 divided by 3 = 320. They'd also pay $320 with this method.

If it's a short answer, you could just write something like, "No, both methods end up with the sales associate paying $320."

Hope this helps!

I would say no too for this word problem for the answer.

The graph shows the density of a substance. Find the density in kilograms per liter.
PLEASE HELP

Answers

Answer:

for every liter it is 1/2 kilograms

Step-by-step explanation:

IF YOU GIVE ME A BRAIN LI

I WILL GIVE YOU THESE

5) The cost of two cakes is $5,what is the cost of nine cakes?

Answers

Answer:

I think it’s 22.50 not sure tho

Step-by-step explanation:

If 2 = $5 then u divide 5 by 2 to find the per cost and then multiply with 9 cakes

5/2 = 2.5(9) = 22.5

It is 22.5 5/2 equals 2.25 2.25 times 9 equals 22.5

I need these to be simplified.
1) 6-10+1
2) -11+3+20
3) 8+(-15)+(-15)
4) 7-(-1)+18

Answers

1 would be -3

2 would be12

3 would be 22

4 would be 26

Find the area of the region bounded by the y-axis, x-axis and the line y=-2x+4.

Answers

Answer:2

Step-by-step explanation:y = 0 : 0 = -2x + 4 → x = -2 is the x-intercept. Similarly, when the line crosses the y-axis, the x-coordinate at this point will be zero and substituting x = 0 into the equation will give us the y-intercept. x = 0 : y = 0 + 4 → y = 4 is the y-intercept.

Answer:

The correct answer is 4

Clarissa has a budget of $1,200 a month to spend for rent and food. She has already spent $928 this month. Which
inequality represents the amount she can still spend this month and remain within her budget?
> 272
05272
O x<272
x2 272

Answers

Answer:

the answer is b. x(< with a line under it) 272

Step-by-step explanation:

Pls mark brainliest

The inequality that represents the amount she can spend and still remain within her budget is x ≤ $272.

What inequality represents the amount she can spend?

Here are inequality signs and what they mean:

> means greater than< means less than≥ means greater than or equal to ≤ less than or equal to

The amount Clarissa can spend must not be greater than the difference between the amount she has spent and the budget.

x≤ 1200 - 928

x ≤ $272

To learn more about inequality, please check: https://brainly.com/question/5031619

#SPJ5

7) A car travels 120 km in 3 hours.How far will it take to travel 200 km?

Answers

200 km will take how far the car to travel in 200km

help plsss
What would be the total cost of a suit for $295.99 and a pair of shoes for $69.95 including a 6.5% sales tax

Answers

it would be 398.73 well that’s what i got

Maiajune earns $8.50 an hour at the local pet rescue organization. How many hours will she need to work to earn $200?

Answers

She needs to work 23 hours if you divide 200 by 8.5 you will get your answer

Answer:About 23 hours

Step-by-step explanation:You have to divide 200 and 8.50 an hour and you get 23.5294118

I hope this helps!

a line has a slope of -5 and passes through (1,-1). What is the equation in line point-slope form?

Answers

The slope of the line is Y=-5

The answer is Y=-5x+-1

HELPPPPPPPPPPPPPPPPPP AHHHHHHHHHHHHHHHHHHH PLZ

Answers

Answer:

t+8

Step-by-step explanation:

duh

Answer:

Step-by-step explanation:

your already doing 8 times t so what number do you have left

Suppose a cheetah could travel 1.5 hours a top speed covering 111.9 miles how far could the cheetah travel in 1 hour

Answers

1 hour = 74.6
u get that by doing :
37.3(2) which equals 74.6

The number of miles that the cheetah will travel in 1 hour based on the ratio will be 74.6 miles.

What are the ratio and proportion?

The ratio is the division of the two numbers.

For example, a/b, where a will be the numerator and b will be the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

As per the given,

A cheetah could travel for 1.5 hours at a top speed covering 111.9 miles.

The ratio of the number of miles to time = 111.9/1.5

With the same ratio, the number of miles x in 1 hour will be as,

x/1 = 111.9/1.5

x = 74.6 miles.

Hence "The number of miles that the cheetah will travel in 1 hour based on the ratio will be 74.6 miles:".

For more information about ratios and proportions,

brainly.com/question/26974513

#SPJ5

What is the value of the variable in the equation, 83=y-99 *

please help me for a cookie lol

Answers

Answer: y= 182

Step-by-step explanation:

flip equation (y-99=83) and add 99 to both sides. the two 99's will cancel and 83+99 is 182 whihc is the answer.

Answer:

y = 182

Step-by-step explanation:

83 = y - 99

83 + 99 = y - 99 + 99

Add the numbers

Move the variable to the left

y = 182

URGENT: Martha is 1 of 5 girls in a backstroke finals of the swim meet. Only the top 2 finishers of the race will receive ribbons. If 1 of the other girls has already finished, what is the probability of Martha receiving a ribbon?

Answers

Answer:

50%

Step-by-step explanation:

Help me and i will give you 50 poings

Answers

Answer:

Ok so 1. I am in AP Calculus BC and I legit just fully learned how to do exponents (I had a rough year in algebra 1 lol) so don't feel bad. And 2. It's really simple. When you multiply exponents you so just add them so x^2 * x^3=x^5. This makes sense visually since x^3 is x*x*x and x^2 is x*x and when you multiply that out you get x*x*x*x*x. Division is also pretty simple and all you have to do is subtract them. (There is a reason for this but its not important but I'll explain it anyways. Basically when you divide it is the same thing as multiplying by a negative exponent so x^3 / x^2 = x.) When you have multiple variables all you have to do is combine like terms so if you have something like xy^2*xy^4 you would get (x^2)(y^6). As for your problems, here:

8vx

63ce

21a^2

48xw^2

30m^3n^2

120a^2c^2x^3

3wx

4ac^2

2wx^2

2a^2c

8ab

7bc

8ac

I hope this helps!

(Also, double check those when you put them in please lol)

Answer:

8vx63ce21a^2 48xw^230m^3n^2120a^2c^2x^32n8x3wx4ac^22wx^22a^2c5a34c8ab7bc8ac

help me pls i need it

Answers

Answer:

for number 3 its 36 and on number 4 it’s 30

Step-by-step explanation:

Hope it helped!

Answer: 24 Chocolate and 16 Red Velvet

Purchase 28.8 *seeing as you cant buy an eighth of a song it is more than likely 29* free 18

64 and 32 the ratio is 1/2

56 and 24 the ratio is 2 1/3

46 and 16 the ratio is 3

could someone help me please.

Answers

Answer:

Use Wolfram|Alpha

Step-by-step explanation:

You can put any math equation in and it will give you the answer

If today is Tuesday, what day will it be three weeks from tomorrow?

Answers

3 weeks from tomorrow will be Wednesday

The x-intercepts of the parabola (y = 2x^2 + 13x - 7) are at (p,0) and (q,0). Find p and q. Enter your answer in the form "p, q".

Answers

Answer:

-7 and 0.5

Step-by-step explanation:

Vivuvtc yy. CBC ttv gghvn

help asap last question will give brainlist

Answers

The answer is D, 2x + 10

Answer:

2x+10

Step-by-step explanation:

PLEASE HELP ME ASAP WILL GIVE BRAINLIEST

Answers

It would take 3 months

3 months I I I I I I I. I I I I I I I I. I I I

can yall help me with thisssss

Answers

Answer:

R u in 6th grade cause i can't answer this question

Step-by-step explanation:

Answer:

8v + 9v - v

Step-by-step explanation:

Solving all options...

8v + 6v + 3v

=> 17v

3(v + 2) + 11v

=> 3v + 6 + 11v

=> 6 + 14v

2(4v + 8v)

=> 8v + 16v

=> 24v

8v + 9v - v

=> 16v

The last option is the only one that equals 16v, therefore, it would be the right answer.

Hope this helps!

Maybe brainliest?

for each graph shown tell whether it shows a proportional relationship

Answers

Answer:

a. yes, because there is a straight line that passes through the origin (0, 0). b. no, there is a straight line but it does not pass through the origin.

Step-by-step explanation:

A dog won a race at the local fair by running 7 1/4 miles in exactly 2 hours. At this constant rate, how long does it take the same dog to run the 26 1/10 mile state fair race? Use ratio reasoning to solve. Use the unit rate found below.

Answers

The answer above me is incorrect

what is the area of the picture in square inches?
4 square inches
8 square inches
16 square inches
32 square inches

Answers

you forgot the photo but imma guess 16

We need the picture to figure that out

Help meh pls (┬┬﹏┬┬) please answer both questions below

Answers

I don’t need to type because the person has said it all

What if the experiment is repeated 1,000 times, then how many times could you expect to draw Ella's name?

answer; 400
you are welcome I only did this only since none of the questions are open.

Answers

Answer:

what do you meaan

Step-by-step explanation:

The answer is 400 times

Greg sold a car for $25,750.
If he earns a 2% commission on every car he sells, how much commission did he make on the sale?

Answers

(2/100)*25750 = $515

Your answer will be $515

now find the difference whats 3 2/3- 1 4/5 (may mark as brainliest)

Answers

The answer as a decimal is 1.8666

Answer:

I belive it is 1 13/15

Step-by-step explanation:

3n (2n+n)

I A bit confused ;-;

Answers

Answer:

9n²

Step-by-step explanation:

3n (2n+n)

3n × 3n

= 9n²

hope it helps!

Answer:

9n²

Step-by-step explanation:

distribute the 3n

=> 3n(2n) + 3n(n)

Simplify

=> 6n² + 3n²

=> 9n²

Hope this helps!

Maybe brainliest?

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