Mathematics Middle School

Solve for varible
-7y=91
a/9=-4
-1/2m=-9

Answers

Answer 1
1. y= -13
2. a= -36
3. m= -18
Answer 2

Answer:

y = -13

a = -36

m = 18

Step-by-step explanation:

-7y=91

divide both sides by -7

-7y/-7 = 91/-7

y = -13

a/9=-4

multiply both sides by 9

9(a/9) = 9(-4)

a = -36

-1/2m=-9

multiply both sides by 2

2(-1/2m) = 2(-9)

-1m = -18

divide both sides by -1

m = 18

Related Questions

Help please ill give brainy (7th grade math)

Answers

Straight line through the origin, hope this helped

Answer:

the answer is straight through the origin

can i get some help?

SHOW WORK!!!!

Answers

12345678910111213141516171819202122232425262728293031323334353637383940

how many miles will car C travel on 1 gallon of gas? Please help me!

Answers

Step-by-step explanation:

1000 divided by 50 and get 20 miles

Answer:

22 miles

Step-by-step explanation:

I found the unit rate/constant of proportionality by dividing 66 by 3 which gave me 22

then I checked by dividing 132 (the number of miles for 6 gallons) by 6 and also getting 22

hope this helps <3

Which number from the set of numbers {3, 5, 6, 7} makes the equation TRUE?

5x - 5 = 30

Answers

Answer:

7

Step-by-step explanation:

5 x 7 = 35 - 5 = 30

Answer: 7

5(7) = 35 then subtract 5, 35 - 5 = 30

make me brainliest because I’m big brain

Please help me with this one too lol.

Answers

Answer:

b

Step-by-step explanation:

HELPPPPPEPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

x = 102

Step-by-step explanation:

The sum of all 3 angles of a triangle should equal 180 degrees, so 30+48=78 and 180-78=102.

i tried to do this but got confused ;0;

Answers

Answer:

answer d 242 square feet

Step-by-step explanation:

Answer:

200 square feet

hope it helped XD

PLEASE HELP ME WITH MY MATH (1-9)

Answers

1. X= 22
2. X= 57
3.X= 40
4. X= 15
5. X= 15
6. X= 84
7. X= 60
8.X= -26
9. X= 40


(You might want to double check, but I’m pretty sure these are the answers!)

Answer:

x = 14

Step-by-step explanation:

Answering #5 as requested

Sum of interior angles in the triangle is 180°.

Sum of the angles of the given triangle:

(2x + 8) + (5x) + 74 = 180

Solve for x:

2x + 8 + 5x + 74 = 1807x + 82 = 1807x = 98x = 14

Hailey used 2 2/3 liters of cola to completely fill 2 bottles. If the bottles are all the same size, how many liters of cola does each bottle hold? Enter your answer below

Answers

Answer:

they each hold 1 1/3 litters of cola

Step-by-step explanation:

Because if there is 2 2/3 liters of cola

then you either divide it by 2

or you can look at it and see what would add evenly to make that number

in this case it would be 1 1/3

1 1/3 +1 1/3= 2 2/3

please mark me as brainliest

hope this helps!

A Barrel in the Shape of a Cylinder is cut in half lengthwise to make the water trough for horses.​

Answers

B (don’t mind this I need 20 characters

Can a triangle have three acute angles? Justify your answer.
brainliest

Answers

Answer: Yes!

Step-by-step explanation:

Not only can a triangle have three acute angles (which is very common), you can also get triangles with angles so acute that their total sum is less than 180 degrees! This happens in a 'negative curved space'.

Answer:

Yes It can!

Step-by-step explanation:

If  it has 3 acute angles it means it is an acute triangle!

Write the equation of the line in slope-intercept form using y=mx+b​

Answers

Answer:

y = 1/2x+2

Step-by-step explanation:

First find the slope using y1-y2 over x2-x1 picking two points, the two I am using are (0,2) and (2,3). Once I use the formula, the slope is 1/2. The Y intercept (b) is where the line intersects it. (0,2) You know it is the y intercept because the x coordinate is 0. So the final equation would be y=(slope)x+ (y-int) so FINAL ANSWER: y=1/2x+2

A gym charges $10 per month for a membership and $3.00 for each cycling class . If Maria’s total bill for one month was $88.00 , how many classes did she take?

Answers

Answer:

Step-by-step explanation:

She took 29 classes in total

Answer:

26 classes

Step-by-step explanation:

first you do 88-10=78 then divide 78 by 3 which gives you 26

Ricardo bought a bicycle for $98.00. He sold it to his friend Sandy for of the price he paid for it. Sandy then sold it to Jennifer for of the price she paid for it. How much did Jennifer pay for the bicycle?

Answers

Answer:

$98

Step-by-step explanation:

help me please this is overdue

Answers

Nope this helps :0
I have teaches a photo of how to do this...
Your answer is w7 ft
Look at the guys comments above me

please help asap!!
:D

Answers

I believe the correct answer is C - 1,152

plz help will mark brainliest if correct answer only ​

Answers

12
Here is how you do it

Answer:

Im pretty sure its  the 3rd answer

Step-by-step explanation:

the average cost of gas per gallon last year was $2.649. This year, the average cost of gas per gallon is $2.999. Find the percent of change. State whether the change is an increase or decrease.

Answers

2.649 this year 2.999 per gallon

Pls help with this questions

Answers

Angle of a straight line always sum up to 180 degrees
So what you should do is add the angles that are given to you and then subtract it from 180
Working:
100 + 20 + x = 180
120 + x = 180
x = 180 - 120
x = 60 degrees


I hope this helps you and your welcome

x=60 degrees
the line adds up to 180 degrees in total

The angle measures of a triangle are shown in the diagram below. What is the value of x?

Answers

Answer:

30°, see explanation below!

Step-by-step explanation:

Hewo Again!

And for your question.

All of the inside angles of a triangle added together equals 180°!

So:

2x+2x+2x=180

6x=180

x=30°

Answer:

30

Step-by-step explanation:

i believe it is 60 because an equilater triangle like that has its angles as 60° and 60 ÷ 2 is 30.

The cost of producing an item is $250 at the break-even point. What is the income from selling the same item at the break-even point?

Answers

i would say $250! can i have brainliest answer hehehe
I think the answer would be 250$

A circular running track is 14 mile long. Elena runs on this track, completing each lap in 120of an hour. What is Elena’s running speed? Include the unit of measure.

Answers

Answer:

Step-by-step explanation:

Alright, so apparently super fast Elena can run 14 miles in 120th of an hour, so you would have to multiply 14 by 120 which is 1680

This girl can run 1680 miles per hour

4x+6y=12 solve for y please

Answers

Answer:

y=2-(2/3)x

Step-by-step explanation:

4x+6y=12

subtract 4x from both sides

4x-4x+6y=12-4x

0+6y=12-4x

divide the equation by 6

6y/6=(12-4x)/6

y=12/6-4x/6

y=2-(2/3)x

Hope that helps :)

Please help me asap! I'm really struggling.
Tomas has $1,000 to spend on a vacation. His plane ticket costs $348.25. If he stays 5.5 days at his destination, how much can he spend each day? Write an inequality and then solve.
I will vote brainlyest!

Answers

Answer:

I answer is in your question

He could only spend $118.50 every day. You have to subtract 1000-348.5 which is 651.75 then divide 5.5 which will give u $118.5

Can some help me with this? It’s volume and I have to show work.

Answers

To find volume, you'll just need to multiply the Length, Width, and Height. It's very simple. Let's go over it step-by-step.

Now, the formula is L × W × H. Like I've said before, it is very simple.

In this problem, 18 is the Length, 6 is the Width, and 16 is the Height.

We now have the Length, Width, and Height.

18 ⇒ Length

6 ⇒ Width

16 ⇒ Height

Let's multiply now.

18 × 6 × 16 = 1,728 in (Do not forgot the unit)

Therefore, the volume is 1,728 in.

What is the volume, in cubic centimeters, of a cylinder with a height of 12 centimeters and a base radius of 6 centimeters, to the nearest tenths place?

Please help :(

Answers

Answer:

1357.2

Step-by-step explanation:

volume = r^2 * pi * h

= 6^2 * pi * 12

=432pi

The volume of cylinder is 1357.17 cubic centimeter.

Formula to find the volume of cylinder:

V = base area × height

[tex]V=\pi \times r^{2} \times h[/tex], where r is the radius of circular base and h is the height of the cylinder.

For given example:

a base radius (r) = 6 cm,

a height of a cylinder (h) = 12 cm

Using the formula of volume of a cylinder,

[tex]V=\pi \times 6^{2} \times 12[/tex]

[tex]V=1357.17[/tex] cubic cm

Hence, the volume of a cylinder is 1357.17 cubic centimeter.

Learn more about volume of cylinder:

https://brainly.com/question/24084532

#SPJ2

What Percentage of a dollar is the value of each coin combination?

Answers

Answer:1. 40%

2. 8

3.135%

Step-by-step explanation:

A pair of sneakers that originally costs $120 is on sale for 60% off. Which of the following is true?

Answers

Answer:

Sale price:$48.00

Step-by-step explanation:

Answer:

the answer is $72 also there are no "following" answers are true so there is the answer

What is the length of YX¯¯¯¯¯¯? Enter your answer as a decimal in the box. Round your final answer to the nearest hundredth. m Circle A with a tangent and a secant segment. Point Z at 1 o clock, point X at 7 o clock, and point V at 9 o clock are located on the circle. Point Y at 8 o clock is located outside of the circle. Tangent Y X and secant Z V Y is drawn that intersect each other at point Y. Segment V Y is labeled as 9 meters. Segment V Z is labeled as 19 meters.

Answers

Answer:

15.87

For confirmation:

Answer:

15.87

Step-by-step explanation:

k12 answer

i need help with math (plz don't give helpless answer)

Answers

Answer:

Mr. Crosgrove tipped $3.84.

120 pens are not red pens.

She had to pay $270 in taxes.

Step-by-step explanation:

So, to find the percentage of something you convert the percentage to a decimal and then multiply.

For #1

He spent $48, and tipped 8%

to turn 8% into a decimal you bring in down two place values, so it is 0.08. You multiply 48 * 0.08 and you get 3.84.

Mr. Crosgrove tipped $3.84.

For #2

He has 150 flair pens and 20% are red. Multiply 150 by 0.2. You will get 30. Now we know that there is 30 red pens, but the problem is asking how much is not red pens. subtract 150-30 and you get 120, so that is the answer.

120 pens are not red pens.

For #3

She has $2,000 and had to pay 13.5% You have to turn 13.5% into decimal so bring place value down by two so it is now 0.135. Multiply 2,000*0.135 and you get 270.

She had to pay $270 in taxes.

Hope this helps!!

-Ketifa

1. 14.17
2. 68/5
That’s all we really know but that will answer the first 2
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