What is the solution of the system ? Use substitution y=2x+7 y=x-1

Answers

Answer 1
(-8,-9)

Explanation:

y=2x+7 ; y=x-1

x-1=2x+7

x-1-7=2x+7-7

x-8=2x

x-x-8=2x-x

x=-8

y=x-1

y=-8-1

y=-9

Related Questions

what is 72% of 250? I need help I have a d in math

Answers

Answer:

180

Step-by-step explanation:

72% of 250

72% x 250

72/100 x 250 = 180

I hope im right!!

The answer is 180
72/100*250= 180

Indicar el número entero que corresponde a cada
situación

a) Se realiza un descuento de $20 en la primera compra con tarjeta de crédito.


b) Se acredita $15 al saldo telefónico por una promoción.

c) La playa de estacionamiento se encuentra en el tercer subsuelo

.
d) María Angélica tiene una deuda de $300.

e) En el nordeste de Francia la temperatura llegó a los 15 grados
bajo cero.

f) La empresa disminuyó las ventas en un promedio de 5 000
unidades por mes.

Answers

Answer:

a)-20

b)+15

c)-3

d)-300

e)-15

f)-5000

g)-400

h)-250

i)+420

I need help with this.
I need to find both A and B, I’m just lost at this point

Answers

They both look to be at 100 degrees

What is the range of the first graph & the domain of the second graph ?

Answers

Answer:

09

Step-by-step explanation:

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Please answer!!! I’ll make brainliest

Answers

Answer:

x = 6

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

let the third side be x , then

x² + 8² = 10²

x² + 64 = 100 ( subtract 64 from both sides )

x² = 36 ( take the square root of both sides )

x = [tex]\sqrt{36}[/tex] = 6

Answer:

6

Step-by-step explanation

Ordered triples only apply to right triangles

3,4,5 is an ordered triple

multiply (3,4,5) by 2 and you get (6,8,10)

the 2 other side lengths are 8 and the hypotenuse is 10 then the other side length is 6.

-------------------

That is just a way to do it quickly and it does not always apply.

the formula for Pythagorean and theorem is a^2+b^2=c^2

a=leg of the triangle

b=other leg of teh triangle

c=hypotenuse(longest leg)

as we can see here 10 is the longest so it is the hypotenuse.

So then we can assume that 8 is a leg of the triangle

so we insert that into the equation

a^2+8^2=10^2

subtract 8^2 from both sides

a^2=10^2-8^2

a^2=100-64

a^2=36

square root both sides

a=√(36)

a=6

Hope that helps :)

.grill: $85, 15% mark up

Answers

Answer:

$12.75

Step-by-step explanation:

total: 85*(1+15%)=$97.75

marked up: 97.75-85=$12.75

brillianst!!!!!!

Which is equivalent toStartRoot 10 EndRoot Superscript three-fourths x ?

Answers

Answer:

D

Step-by-step explanation:

D

D

D

D

D

D

D

Answer:

D

Step-by-step explanation:

True or false? When comparing the results of multiplying polynomials using the horizontal method and the vertical method, the vertical method is more accurate than the horizontal method.

Answers

Answer:  FALSE

Step-by-step explanation;

Please help me will mark brainliest

Answers

B A C

The longest angle is opposite to the longest side in a triangle. The same goes for the shortest and middle angles.

B is opposite to the 57 degree angle, the shortest angle, so it’s the shortest side. A is opposite to the 59 degree angle, so it is the second shortest side. C is opposite to the 64 degree angle, the largest angle, so it’s the longest side.

A car drives 120 miles at a speed of 40 mph. How long did it take?

Answers

Answer:

3 hours

Step-by-step explanation:

Answer:

3 hours

Step-by-step explanation:

120/40=3

140 with the power of 1/8 in radical form

Answers

Answer:

The answer is 8√140.5

Step-by-step explanation:

Hi need points?
I’ll also give best answer

Answers

Answer:

can you answer my latest post plsssssss id appreciate it

Step-by-step explanation:

what's the domain of f(x) = 3x/x^2+64

Answers

The domain is [tex]x\neq 0[/tex] because that would make the denominator  0 which is undefined

Annabelle has 56 1 cm³ what are the dimensions of the rectangle Langer prism Annabelle could build with all the cubes

Answers

Answer:

The six possible rectangular prisms Anabelle could build are;

W = 1,  B = 1,  L = 56

W = 1, B = 2,  L = 28

W = 1,  B = 4,  L = 14

W = 2,  B = 2,  L = 14

W  = 1,  B = 7,  L = 8

W = 2,  B = 4,  L = 7

Step-by-step explanation:

The number 1 cm³ Annabelle has = 56

The dimensions volume of the cubes Annabelle could build with the 1 cm³ = 56 cm³

The volume of rectangular prism, V = L × B × W

∴ For the rectangular prism, V = 56 cm³ = L × B × W

Therefore, the possible dimensions of the prism are three factors of 56, including;

1, 2, 4, 7, 8, 14, 28, 56

The combination of 3 factors of 56 that can be multiplied together to give 56 and therefore, the possible rectangular prisms includes;

  W × L × B = A

1) 1 × 1 × 56 = 56

2) 1 × 2 × 28 = 56

3) 1 × 4 × 14 = 56

4) 2 × 2 × 14 = 56

5) 1 × 7 × 8 = 56

6) 2 × 4 × 7 = 56

There are therefore 6 possible rectangular prisms Annabelle could build

Use the line plot below to determine the number of times less than 14 pieces of trash were collected at recess. A. 0 B. 5 C. 6 D. 9

Answers

Answer:

b

Step-by-step explanation:

because i helped your welcome

Please help quarter ends tomorrow and I don’t know what to do I’m failing all my classes

Answers

x+10*=4x-32*4x-x=32+103x=42*×=14*

14x4=56*-32*=24*

from E to B is 180 degree so take 180-24=156*

angle EMQ is equal to angle DMB so=156 degree

answ=156

Alex bought a new skate board at 20% discount. He paid $72. What percent of the original price did he pay?

Answers

Answer:

Step-by-step explanation:

Alex bought a new skate board at 20% discount. He paid $72. What percent of the original price did he pay?

Step 1

We find the original price

= Percent Discount × Original price =

= 20% × Original price = $72

= 0.2 × x = $72

x = $72/0.2

x = 360

write your own story problem using multiplying or dividing fractions.
(maybe include a answer)

Answers

Answer:

At a sleepover, Karen, Jennifer, Alice and Kyle ate 8/4 slices of pizza. Later that night, everyone realized that they needed to know how much pizza they ate in total. Can you help?

Step-by-step explanation:

8/4 is 2 and there are 4 people

so basically 2*4 is 8

lol simple

The Furlani’s went on a road trip. Driving at a constant speed for 2 hours, they covered 120 miles of their trip. If their destination is 600 miles away, how long will they be driving?

Answers

Answer:

They will be driving for a total of 10 hours or 8 more hours than they've already traveled.

160 bananas;20%decrease

Answers

Answer:

128 banana's... I would work it all out for u but the teacher just came in my room and had a go

Answer: 128

Step-by-step explanation:

Percent (%)' means 'out of one hundred':

p% = p 'out of one hundred',

p% is read p 'percent',

p% = p/100 = p ÷ 100.

20% = 20/100 = 20 ÷ 100 = 0.2.

100% = 100/100 = 100 ÷ 100 = 1.

I don't know what to do with this one????!!!!!

Answers

Answer:

Step-by-step explanation:

height of post ÷ length of shadow = 2/10 = ⅕

height of tower is ⅕ the length of its shadow.

⅕×125 = 25

The tower is 25 feet tall

PLEASEEEEE HELPPPPP ASAPPPPP

Answers

Answer:46x

Step-by-step explanation:

hyhh

Identify an equation in point-slope form for the line perpendicular to
y = 1/4 x-7 that passes through (-2, -6).

Answers

Answer:y=-1/4x+3

Step by step explanation: i cant explain it

Which of the following is an example of a linear monomial?
Group of answer choices

3x+2

4x2

x2−5

−5x

Answers

B and c. The other two are not monomials

Answer:

-5x, monomial comes from the word "mono" means "one"

Graph each pair of ordered pairs. Then find the distance between the points. Round to the nearest tenth if necessary.

1. (4, 3), (1, –1)

Answers

Attached below.......

Continue to name one point that is a solution to the
inequality and one point that is not a solution.

y ≤ 3x + 4

Answers

Answer:

y≤6x+8

Step-by-step explanation:

Given function:

y≤3x+4

This means:

variable stays same

if y=7 then x=1 and if y=14 then x can be 2 or 3.

we can also think as:

y≤6x+8

what we did:

double the number: 3x+4 · 2 = 6x+8

Therefore, another equation for y≤3x+4 would be y≤6x+8.

2y-4x=-18 slope intercept form

Answers

Answer:

y=−2x−9

Step-by-step explanation:

Hello,

Solving Process:
1. Isolate y
2. Make coefficient of y equal 1

Steps:
1. (2y - 4x) / 2 = 18 / 2
2. y - 4x = 9
3. y = 4x + 9 <<<<

Good luck to you!

The %5 sales tax on a $1500 tv need asap please and thanks

Answers

Answer:

This would be 75 dollars, or a total of 1575 dollars (the tv with tax)

Step-by-step explanation:

convert 5% to decimal = .05

.05 multiplied by 1500 = 75

75+1500=1575

Answer:

CP=1500

SALES TAX%=5

so, the answer after the calculations would be

$75.00

Hope it helps

Mark me as Brainliest please uwu

helpppppppppppppp hutrryyyyyy for BRIANLESSSTTTTT 10 points !!!!!!!!!

Answers

Answer:

32

Step-by-step explanation:

32 hope that helps as

PLEASE HELP ME ASAP!!!!!


Can you use this pattern to find 111111111*11111111 without a calculator? Please Explain

Answers

Answer:

Probably not

Step-by-step explanation:

That's a lot of numbers

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