Mathematics Middle School

Solve the system of equations and choose the correct answer from the list of options. (4 points)

x − y = 7
y = 3x + 12

a
2 over 19 comma 2 over 33

b
negative 2 over 19 comma negative 33 over 2

c
negative 19 over 2 comma negative 33 over 2

d
19 over 2 comma 33 over 2

Answers

Answer 1

Answer:

SO THE AWNSER WILL BE (B)

Step-by-step explanation:

x − y = 7

y = 3x + 12

a

2 over 19 comma 2 over 33

b

negative 2 over 19 comma negative 33 over 2

c

negative 19 over 2 comma negative 33 over 2

d

19 over 2 comma 33 over 2

SO THE AWNSER WILL BE (B)

Answer 2
the answer is b (it equals -2/19, -33/2)

Related Questions

Another question! using compatible numbers, which is the best estimate of (28.5)(7.1)

36

40

210

or 300?

Answers

210 // 28x7=198 rounded equals 200 and 300 would be far off so 210
it would be 210 because 29(7) is 203 and 210 is the closest answer :)

Explain your answer. Plz, help. Thank you

Answers

Answer:

I agree with Marcus.

Step-by-step explanation:

Magnets have North and South poles. If you cut a magnet in half, both pieces will still have north and south poles.

Yea I also agree with Marcus cuz of what they said ⬆️

16.1 – (–14.7) explain your work

Please help

Answers

1.4 you subtract normally it as if you were doing whole numbers

Answer:

1.4 or 30.8

Step-by-step explanation:

1.4 is for regular math because it's basically 16.1 - 14.7

30.8 is for KCO or Keep Change Opposite (Beginners math)

Basically it would turn the equation into 16.1 + 14.7

You can use either but if you aren't sure ask your teacher about the strategy.

Hope this helps and if not tell me your strategy.

What does X3+Y3=? I am very confused.

Answers

it equals 3 because (x+y)

Answer:

(X+Y) (X2+Y2-XY)

Step-by-step explanation:

X3+Y3=(X+Y) (X2+Y2-XY) answer

Tap tap tap in- Oh! Didn’t see you there

Answers

Answer:2.181

Step-by-step explanation:

Answer:

2.18 or 2.18182

Step-by-step explanation:

If a sweatshirt cost $45, and sales tax is 7%, how much tax did you pay?

Answers

$48.15

Good Luck!!! :)

Answer:

Step 1: take the total price and divide it by one plus the tax rate.

Step 2: multiply the result from step one by the tax rate to get the dollars of tax.

Step 3: subtract the dollars of tax from step 2 from the total price.

Pre-Tax Price = TP – [(TP / (1 + r) x r]

TP = Total Price

5v-15=20
solve for v
can anyone explain what im supposed to do

Answers

Answer:

v=7

Step-by-step explanation:

add 15 to both sides 5v-15+15=20+15

simplify

5v=35

divide both sides by 5

5v/5 = 35/5

and you get 7

hope this helps you

Add 15 + 20 witch equals 35 then divide by 5 v = 7

I need help with this.

Answers

Answer:

1,320

22 and 0,

6 and 22

0 + 1,320 = 1,320

Hope I helped! Plz leave a comment or rating to help me!

Answer:

Multiply 22 and 0 to get 0

Multiply 60 and 22 to get 1320

0 + 1,320 = 1,320

Step-by-step explanation:

When doing multiplication, you first start by multiplying the the bottom right number by the top right, then left numbers. In this case it’s 0, and multiplied by 0 is 0. In this case, since the first answer was 0, you just have to grab a calculator for 22 x 60

Which of the following is equivalent to (mn)3? (5 points)


3mn

m3n

mn3

m3n3

Answers

Answer:

m3n3

Step-by-step explanation: you would use the distributive property to distibute 3 into m and n

m3n3 by using distributive property

what is four to the 8th power times 5 to the 8th power

Answers

The answer is 2.56 x 10^10

Answer:2.56^10

Step-by-step explanation:

4 to the 8th power= 65536

5 to the 8th power=390625

65536x390625=2.56^10

need help please help

Answers

Answer: The Relation IS A FUNCTION. Domain:  {7, -8,6, -1} Range: {1, -5,4 -6}

Step-by-step explanation is below.

Best of luck!

- A Math Tutor That Just Helped You.

NOTE THAT THIS IS ONLY ANSWER FOR QUESTION ONE

40 POINTS PLEASE HELP ME THERE IS A LINK

Answers

Answer:

0.65=65/100

Step-by-step explanation: The person above me is correct :)

The area of a rectangle is 82.84 square meters. If the length is 7.6 meters, then what is the width?

hey i need help, anyone i don't get it do i divide or multiply HELPPPPP

Answers

Answer:

The answer is 10.9

Step-by-step explanation

#1 think of the formula of the area

length x width = area

#2 do the oposite of what you would to to find the area to find the width

82.84➗7.6 = 10.9

#3 check your answer

7.6 x 10.9 = 82.84

#3 answer

width= 10.9

Hope this helps!!!!!!

the answer to your question is 10.9

g(t) = 3t+ 4; Find g(−3)

Answers

Answer:

t=-5

Step-by-step explanation:

-3=3t+4

-1=t+4

-5=t

HELP ME PLEASE WITH THIS QUESTION

Answers

Answer:

YES

Step-by-step explanation:

Answer:

Yes is the answer pls mark me brainliest i really need it thanks

Determine the coordinates of the point shown.

A coordinate grid shown. There are increments of 0.5 for each grid line on each of help will give brainliest .the two axes. A point is located at 3 grid lines to the right and 1 grid line down from the origin.

(1.5, −0.5)
(−0.5, 1.5)
(3, −1)
(1, −1)

Answers

x first so five to the left so it's negative and if each gridline is .5 and were are 5 gridlines aver then .5*5 so -2.5 then y is up so positive and 3 lines so .5*3 so 1.5 so coordinate is (-2.5,1.5)

Answer:the answer is B or (1.5,-.5)

Step-by-step explanation:

A juice jar is full and holds 6 gallons of water. Thomas pours 1 ¾ gallons from the jar into another container. Susan pours ⅗ gallons into her jug and Daniel pours 3 ½ gallons into another jug. How many gallons of juice is left in the original juice jar?

Answers

Answer:

i forgot

6/3

Step-by-step explanation:

The answer should be 13/40

is this true??

4/2 = −4/−2 =2

is this true??
−4/2=4/−2=2

Answers

I dunno I’m not good at math
The first one is true the second isn’t

A window-washing crew can finish 15 windows in 18 minutes.

If this crew was assigned to wash all of the 24,348 windows on the outside of the Burj Khalifa at this rate, how long will the crew be washing at this rate?

Answers

Answer:

34321.2 min

Step-by-step explanation:

The Burj Khalifa has in total 28601 windows. On the other hand, we are told the window-washing crew can wash 15 windows in 18 minutes. So, we can use the Rule of three to solve this problem:

If:

15 windows ---- 18 min

28601 windows ---- ?

Then:

? = (28601windows)(18min)/15windows

? = 34321.2min

Answer:

34321.2 min

Step-by-step explanation:

Can anyone answer this ASAP!

Answers

1= 300

2= -13

3= 45

4= 13

5= 2

6= 16

8= 15 degrees

9= 340

10= +10

11= -9

12= -14

13= -25

14= 4

15= -20

16= 9

17= 25

Write each phrase as a numerical or algebraic expression.

4) 25 less than k

5) the product of 79 and m

6) the quotient of 325 and 5

Write each numerical or algebraic expression using words.

7) 87 x

8) 38 + s

Answers

4) 25 < k
5) 79 * m or 79m (depending on how your teacher taught you)
6) 325/5
7) the product of 87 and x
8) the sum of 38 and s

If y varies directly with x, and y = 2 when x = −4, what is the value of y when x = 20 ?

Answers

Answer:

y=kx

2=k.-4

k=-1/2

then

y=-1/2×20

y=-10

Answer:

y = - 10

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 2 when x = - 4, that is

2 = - 4k ( divide both sides by - 4 )

[tex]\frac{2}{-4}[/tex] = k, that is

k = - [tex]\frac{1}{2}[/tex]

y = - [tex]\frac{1}{2}[/tex] x ← equation of variation

When x = 20, then

y = - [tex]\frac{1}{2}[/tex] × 20 = - 10

What’s the solution to this equation 2+x=7/8x-15

Answers

Answer:x=−136

Step-by-step explanation: Step 1: Simplify both sides of the equation.

2+x=

7

8

x−15

2+x=

7

8

x+−15

x+2=

7

8

x−15

Step 2: Subtract 7/8x from both sides.

x+2−

7

8

x=

7

8

x−15−

7

8

x

1

8

x+2=−15

Step 3: Subtract 2 from both sides.

1

8

x+2−2=−15−2

1

8

x=−17

Step 4: Multiply both sides by 8.

8*(

1

8

x)=(8)*(−17)

Answer:

x = −136

Step-by-step explanation:

got the answer from m a t h w a y . c o m

The rectangle shown has a perimeter of 90 cm and the given area. Its length is 3 more than five times its width.
Write and solve a system of equations to find the dimensions of the rectangle.
W
The length of the rectangle is
cm and the width of the rectangle is
cm

Answers

One is 88...........

Please help with this question

Answers

y=10x+120 sorry if I’m wrong doe

Malik borrowed $1,800 from the bank at a rate of 8% simple interest per year.Over the course of three years ,how much interest did he pay?

A.$144
B.$432
C.$2232
D.$4320

Answers

I’m gonna say c? Good luck!

Answer:

b

Step-by-step explanation:

if malik is just paying interest and not the whole then b.

1,800 × 0.08 = 144, 144 × 3 = 432. the interest would be 432

In which choice do all three points lie on the same straight line?

A) (0,0) (5, 4) (7,4)
B) (1,1) (2,4) (3,9)
C) (-2,5) (0,3) (5,-2)
D) (-1,-1) (0,0) (4, 64)

Answers

Answer:

why did you remove my answer?

Step-by-step explanation:

C sorry if I’m wrong

Lindsay used two points x,y and x2, y2 to the equation of the line y= mx +b that passes through the points first she used the definition of slope to determine that the value of m is y2-y1/x2-x1. given this information which expression must represent the value of b?​

Answers

Answer:

its A

Step-by-step explanation:

can pls have brainiest

Answer:

y2−

y1

x2

−x1

=

x2y2−x3−y

x2

Step-by-step explanation:

Let's solve for b.

y=mx+b

Step 1: Flip the equation.

mx+b=y

Step 2: Add -mx to both sides.

mx+b+−mx=y+−mx

b=−mx+y

Answer:

b=−mx+y

I tried hope I helped

In March, Isaiah and Freddie had the same amount of money in their savings accounts. In April, Isaiah deposited $210 into his account. Freddie increased the money in his account by 15%. When they compared their balances, they found that they were still equal. How much money did they both have in their accounts in March? Enter your answer in your box

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let the original amount in Isaiah and Freddie's accounts be x

15%of x=$210

15x/100=$210

x=210*100/15

x=$1400

It’s part of my lil brothers hw

Answers

For Part A: the answer is 90 muffins total.
For Part B: the answer is 150 muffins total.

All you have to do is divide x (number of muffins the baker made) by 0.4 to get the total amount of muffins made.
Part A
40% 36
——- = ———
100% 90


You have to 100 x 36 = 3600 divded by 40 is 90
Other Questions
Explain why 3(x+4)=2(x-5) has one solution.Choose the best response below.A. The X-terms are the same, but the constant terms are different.B. The x-terms are the same and the constants are less than 20.C. The X-terms are the same, and the constant terms are same.D. The X-terms are different. Ya this big brain time if u solve this u will get brainlistFind x, y, and z such that x+y+z=k, for each k from 1 to 100 t OurGodIll give you brainliest write a number in which the digit 2 is one tenth the value of the digit 2 in 1,286,059 1. Kofun2. Asukaemergence of a strong Japanesegovernment; creation of the waka writtenlanguageintroduction of Buddhism;emergence of Japanese identityburial mounds; arrival of Chineseand Korean immigrants; introduction ofthe horse; flourishing of Chineselanguage and cultureThe Tale of Genji; yamato-e;assertion of authority by aristocracy;emergence of warrior clans; bushi;samurai3. Nara4. Heian 2. Draw a picture of your home. Where does the sun rise relative to your house? Where does the sunset? On the picture, indicate these two locations. Solve for X x - 4 1/6 = 9 1/3 Which two options are a result of convection currents in the air on Earth?A. Electromagnetic wavesB. CloudsO C. TidesD. Storm systems Here are two spheres, withradii 3 cm and 4.5 cmrespectively. The surfacearea of the smaller sphere is367 cm. What is the surfacearea of the larger sphere?4.6 cm3 cmA) 417 cm2C) 817 cm2B) 547 cm2D) 121.57 cm2 What is lighter, a pound of bricks or a pound of feathers? (I know the answer already,but do you?) Whoever gets it right and gives an explanation for their answer might get awarded brainliest! Question 10 (2 points)Which of the following types of waves has more energy than an X-ray?MicrowavesRadio wavesVisible lightGamma rays 3. How many misuses do semicolons have? Which of the following is the best type of refusal to use when someone offers you drugs?A. quick but unsureB. aggressive and clearC. assertive and clear Which of the following best describes ethical monotheism? Rachel wants to copy eight rows of data from one spreadsheet to another. She opens the spreadsheet, highlights the appropriate data,and selects the Copy command from the menu. What should she do next?O Select the Cut command from the menu.O Open the new spreadsheet.O Double-click on the cells that are highlighted.Select the Paste command from the menu,Save and Exit A bus driver drives 6 miles a day how many miles does the bus driver drive in 5 days? Garrett wants to bake a blueberry pie. At the market, blueberries cost $1.90 per pound. If he pays $4.75 for blueberries, how many pounds does he buy? Please help me with this!!!!! how does the author show that declining the population of painted buntings is linked to habitat loss How can a decision have a major impact on who we become?