Mathematics High School

whats the answer to


-7y=7x+21

Answers

Answer 1

Answer:

y = -x - 3

x = -y - 3

Step-by-step explanation:

If solving for y,

-7y = 7x + 21

-y = -x + 3 (dividing everything by 7)

y = -x - 3

If solving for x,

-7y = 7x + 21

-y = -x + 3

x = -y - 3

Related Questions

The ratio of students with brown eyes in Michelle’s class to all of the students in her class is 20:25. What is another way to write this ratio?

Answers

Answer:

3/4, 5/6, 8/10 this is in fraction form though. just change it to 3:4

Can you help me please ​

Answers

Answer:

Step-by-step explanation:

y=kx

where k is a constant.

6=-4k

k=-6/4=-3/2

y=-3/2 x

What number a is 0.4% of 40?

Answers

Answer:

0.16

Step-by-step explanation:

hope this helps!

Answer:

0.16

Step-by-step explanation:

First let's convert 0.4% to a decimal.

0.4% = 0.004

So, 0.4% of 40 is just 0.004 times 40, which is 0.16.

Let me know if this helps!

Evaluate: 8×6+(12-4)÷2​

Answers

Answer:

52

Step-by-step explanation:

I want to explain why so, first subtract 4 from 12 then youll get 8 the divide it by 2 and get 4 so then evaluate 8 x 6 which is 48 then add it to 4 to get the answer of 52

Answer:

The correct answer is 52

Step-by-step explanation:

HAVE A GOOD DAY!

Ben made a sundial in his backyard by placing a stick with height 6 in. straight into the ground, and marking the hours in the grass. To test it, he checks the time each day when the sun makes an angle of 30° or 60° with the ground. Select all the possible lengths of the shadow when Ben checks the sundial.
A. 12 in.
B. 23√ in.
C. 8 in.
D. 63√ in.
E. 22√ in.

Answers

Answer:

B and D

Step-by-step explanation:

1 of 2
Full Screen
Mark uses 3 cups of sugar to make 2 loaves of pumpkin bread. At that rate, how many cups of sugar should he use to make 7 loaves of pumpkin bread?I’ll give brainly just help please

Answers

Answer:

14+3 =15 its answer yon cqn add ma brainlist

1,729 is divisible by 9
a. true
b. false

Answers

Answer:b

Step-by-step explanation:

Answer:

every number is divisible by a number. But if it has to be a whole number that has no decimals, then no.

Step-by-step explanation:

1729/9 = ~192.112

What is the value of x?

Answers

Step-by-step explanation:

the sum of the angels of this picture is equal to (n-1)×180

our n=7, the sum of the angles is equal to (7-1)×180=1080

1080=122+125+148+107+126+131+x

x=1080-759

x=190

Find the volume of a cylinder with a height of 6 cm and a radius of 3 cm. 3 cm 6 cm

Help plz it ia due soon i will mark braniliest​

Answers

Answer:

the answer is A 54

Step-by-step explanation

Answer

A. 54

Step-by-step explanation:

Well for me its B. 54

But I did get a 100 on my test

please find the m∠DEY

Answers

Answer:

41, x=-5

Step-by-step explanation:

m<DEY = m<FEY, by angle bisector theorem

(9x-4) = 41

9x = 45

x = 5

m<DEY = 41

Patricia is 5 years older than Wyatt. The sum of their ages is 61. How old are Patricia and Wyatt?
(A) First write an equation you can use to answer this question. Use x as your variable.
The equation is_________

Answers

Answer

w+(w+5)=61

Step-by-step explanation:

Answer:

an answer could be Patricia is 33 and wyatt is 28 so x=33

Step-by-step explanation:

plssss help (ZOOM IN TO SEE FULL PIC)

Answers

Answer:

d and e

Step-by-step explanation:

IV must have a pos x value and a negative y value

we can eliminate everything except d e & f

f is wrong bc it has a positive 3 value

Hakeem shot the basketball 28 times and made 17 baskets. What percent of his shots were baskets? step by step

Answers

Answer:

60

Step-by-step explanation:

Answer:

17 divided by 28 = .6071  which equals 60.7% or rounded to 61%

Step-by-step explanation:

long division

fourteen cups of tomato sauce makes 30 servings of spaghetti. How many cups are needed for 45 servings?

Answers

Answer:

28 cups

Step-by-step explanation:

Can you solve this got less than 30 minutes

Answers

Answer:

2x-3y=-8?

Step-by-step explanation:

Two points are graphed on a coordinate grid. Point A is located at (-8, -3) . Point B is created by reflecting point A over an axis. Which coordinates could be the coordinates of point B

Answers

it is A and E hope this helps :)

The point (-8, -3) is reflected on x-axis, we have (-8, 3) and the point is reflected on y-axis, we have (8, -3). Therefore, options A and E are the correct answers.

What is the reflection on x-axis?

When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the x-axis is (x, -y).

The given coordinate point A is (-8, -3).

Reflection on x-axis, we get

(-8, -3)→(-8, 3)

The reflection of point (x, y) across the y-axis is (-x, y).

Reflection on y-axis, we get

(-8, -3)→(8, -3)

Therefore, options A and E are the correct answers.

To learn more about the reflection over x-axis visit:

https://brainly.com/question/15175017.

#SPJ2

are any of these triangles similar explain PLEASEEE!

Answers

Answer:

Step-by-step explanation:

Yes. R and X. they both have 20  degree angle at the top

Answer:

Yes

Step-by-step explanation:

Because the first triangle has the angles 20 and 80. The other triangles have those angles.

Please mark me brainliest, 5 stars, and a thanks! Have a great day!

4,518 is divisible by 6
a. true
b. false

Answers

The answer will be true

Answer:

true

Step-by-step explanation:

4,518÷6=753

ignore this answers have to be at lest 20 characters

Nancy started the year with $425 in the bank and is saving $25 each week. Sam started the year with $705 but is spending S15 a week. Write a system of equations that model the following situation.
Define cach variables with a "Let" statement, write two equations, and solve completely.

Answers

Answer:

Step-by-step explanation:

Let x equal number of weeks and y equal money in the bank.

Nancy, y=425+25x

Sam, y=705-15x

The system of equations:

Nancy:   [tex]y=\$425+\$25x[/tex]

Sam :   [tex]y=\$705-\$15x[/tex]

Given:

Amount in Nancy's bank = $425

Amount saved by Nancy each week = $25

Amount in Sam's bank = $705

Amount spend by Sam each week = $15

To find:

The system of equations describing the given models.

Solution

1) Amount in Nancy's bank = $425

Amount saved by Nancy each week = $25

Let the number of weeks Nancy saving her money be 'x'.

Let the total amount of money in Nancy's bank after x weeks be 'y'.

[tex]y=\$425+\$25\times x\\y=\$425+\$25x[/tex]

The equation for Nancy:

[tex]y=\$425+\$25x[/tex]

2)

Amount in Sam's bank = $705

Amount spend by Sam each week = $15

Let the number of weeks Sam spending his money be 'x'

Let the total amount of money left in Sam's bank after x weeks ='y'

[tex]y=\$705-\$15\times x\\y=\$705-\$15x[/tex]

The equation for Sam:

[tex]y=\$705-\$15x[/tex]

Learn more about system of equations here:

brainly.com/question/9351049?referrer=searchResults

brainly.com/question/90105?referrer=searchResults

Scarlett went shopping for a new pair of sneakers because of a sale. The store was offering a 10% discount. If the price on the tag was $22, what would be the price after the discount but before tax, to the nearest dollar and cent?

Answers

Answer:

$19.8

Step-by-step explanation:

$22*10%=$2.2

$22-$2.2=$19.8 before tax, exact dollar and cent

Type the missing number in this sequence:
-5,
-30,
-180,

-6,480

Answers

-1,080, because they are all being multiplied by 6 :)

i don’t understand anything online school is hard.

Answers

7.188 m




use the pythagorean therom

Jennifer’s math score for third quarter were 78, 89, 93, 73, 99, 87, 92 and 89 what is the range for her score?
A.89
B.99
C.73
D.26
E. 77.7

Answers

Answer : D

Explanation: Range means the amount in between 2 variables, the lowest and the highest. In this case 73 and 99.
The answer is D. 26 I hope this helps

Pls help a girl outttt

Answers

i believe the last answer would be correct.

Answer:

95 Degrees Celsius

i need help...........

Answers

Answer:

Step-by-step explanation:

Can someone explain why 12/9 is correct. Will mark brainliest.

Answers

Tangent is opposite over adjacent, so going from angle X, 12 would be the opposite leg, and 9 would be the adjacent leg

Answer:

Cause u got confused with the numbers you had to switch them up, i dont know what you did wrong but it was the other way around.

Step-by-step explanation:

1

2

will give brainliest
A worker at a clothing store earns a 15% commission on a sale of $75.00 (whole). How much is the commission? The 15% commission of $75 will be _____

Answers

Answer:

Step-by-step explanation: The commission will be a total of $11.25.

the commission would cost $11.25

-4x+5 + -13x+39=180 angle measure

Answers

Step-by-step explanation:

−4x+5−13x+39=180

Step 1: Simplify both sides of the equation.

−4x+5−13x+39=180

−4x+5+−13x+39=180

(−4x+−13x)+(5+39)=180(Combine Like Terms)

−17x+44=180

−17x+44=180

Step 2: Subtract 44 from both sides.

−17x+44−44=180−44

−17x=136

Step 3: Divide both sides by -17.−17x

−17

=

136

−17

x=−8

Answer:

x=−8

I need this done by tonight!

Solve the system of equations

-3x+2y=-6
5x-2y=18

Please help me

Answers

Answer:

the answer is (x,y) = (6,6)

Step-by-step explanation:

1) first solve the equation for 2y

you should've gotten:

2y = -6 + 3x

5x - 2y = 18

2) substitute the value of 2y into the equation

5x - 2y = 18

so, 5x -(-6 + 3x) = 18

3) now solve 5x -(-6 + 3x) = 18

4) from that solving that equation, u should've gotten x = 6

5) now plug in 6 for x in the other equation, solve for y

( • stands for multiplication if u didn't know, we use this in higher levels of math so multiplication symbols and x variables aren't confused)

5 • 6 - 2y = 18

6) after solving for y in the previous equation, u should've gotten y = 6

7) now we know that x = 6 and y = 6, however it is always important to check if ur answer is correct by plugging in the x value y values u ended up with into the original system of equations.

checking ur work would look something like this:

2(6) = -6 + 3(6)

5(6) - 2(6) = 18

hope this helps <3

Help with this problem please!!!!!

Answers

Answer:

3

Step-by-step explanation:

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