Solve the system by substitution.
-2x - 3y = -8
-y = x

Answers

Answer 1

Answer:

x=−8 and y=8

Step-by-step explanation:

Answer 2

Answer:

(-8,8)

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.


Related Questions

Hey can you help me fast!!

Answers

Answer:

I believe the answer would be -4 1/2.

13/18 goodluckkkkkyyyy

The equation t= 6 + wrepresents the relationship between the number of weeks and the total amount saved.

TRUE OR FALSE
AND WHY

Answers

True hahahahahahahahahhahahahah

Answer:

hello my followers and my

Match the function with the graph

Answers

y=x^3+2 , It’s the answer ;)
Have a good day!

ILL MARK BRAINLIEST TO FIRST PERSON TO ANSWER CORRECTLY

Which One Doesn't Belong? Determine which equation from the four below doesn't belong and justify your answer. Could there be a different answer?

Answers

Answer:

what on the planet is the question

Left box on the bottom, because they don’t look exactly parallel to one another.

Explain how you know that √10 is between 3 and 4? what would your estimate of √10 be??

Dont try and say the answer in a mf file i have to download lol

Answers

Answer:

Step-by-step explanation:

Welllllll.....

If you take the square root of 9, it's 3

if you take the square root if 16, it's 4

I would guess it to be about 3.2

Answer:

Step-by-step explanation:

Lily ,  we know that [tex]3^{2}[/tex] =9  and [tex]4^{2}[/tex] = 16  so we know that  [tex]x^{2}[/tex] = 10  , where 10 is an answer to x squared,  then X lies between 3 and 4   ,  see?  

Select all correct ways of factoring –3x – 9.

Answers

umm if u factor it u get
-3(x+3)

Answer:

Some possible expressions, since there's no answer choices provided:

-3(x + 3)

3(-x - 3)

Step-by-step explanation:

Expression 1:

This uses a GCF of -3, since -3x and -9 are divisible by this. Let's divide -3x and -9 by this first:

-3x / -3 = x

-9 / -3 = 3

So now, we can add these terms and multiply them by -3 to get our answer:

-3(x + 3)

And just to check, we can expand it:

-3x + -3(3) = -3x - 9

Expression 2:

This uses a GCF of 3, like the last one but it's negative. -3x and -9 are also divisible by this. Let's divide both terms by this GCF first:

-3x / 3 = -x

-9 / 3 = -3

Now, we can add these terms and multiply them by -3 to get our final answer:

3(-x - 3)

To check, once again:

-3x + 3(-3) = -3x - 9

Find the surface area of this prism. Please help 20 points!!!!!

Answers

Answer:

ima say 260. .................

Answer:

umm 247

Step-by-step explanation:

helpppp pleaseeeee.....-.....

Answers

Answer:

answer attached

Step-by-step explanation:

(-8 , 12) and (36 , -21)

What is the length, in feet, of the hypotenuse of a right triangle with legs that are 6 feet long and 7 feet long, respectively?


13
square root of 13


85
square root of 85

13
13

21
21,

42

Answers

Pythagorean Theorem:
6^2 +7^2 =hypotenuse^2
Hypotenuse = sqrt of 6^2 + 7^2
Hypotenuse = sqrt of (36 + 49) = sqrt of 85

So the hypotenuse is square root of 85 (the second option)

I hope this helps :) sry for not using proper symbols I was kinda in a rush

04/17: Average: Mean
Alex has grades of 87, 75 and 86 on three math tests. What grade must he obtain on the next test to have an avera
tests?

Answers

Answer:

dam

Step-by-step explanation:

Solve for i

3 (.5i - 6 ) = 12

Answers

Answer:

2

Step-by-step explanation:

15i-18=12

15i= 12+18

15i= 30

I= 30/15= 2

the sum of -4 and a number is equal to -48 what is the number
a. -12
b. -44
c. 12
d. -52

Answers

Answer:

-44(b)

Step-by-step explanation:

-4+x=-48

add 4 to both sides

x=-44

solve the equation-4(x+10)-6=-3(x-2)

Answers

Answer: x=  -52

Step-by-step explanation:

The answer for this math problem is -52

what is 3/4 x 7?????

Answers

Answer:

The answer is 5 1/4

It’s simple if you need more help just ask

Solve the equation.

3x + 2(4x − 6) = 8x + 1


What is the value for x?

Please enter fractional values in the form ‘a/b’. For example, an answer of 3/4 will be entered as 3/4.
x =

Answers

Answer:

13/3

Step-by-step explanation:

Try it

A girl throws a paper airplane from her treehouse. The height of the plane is a function of time and can be modeled by the equation ℎ()=25+2.5−122. Height is measured in feet and time is measured in seconds.

Answers

h(0) show the initial height of the plane, that is 25 feet.

The given equation is h(t)=25+2.5t-1/2 t².

Here, h(0)=25+2.5(0)-1/2 (0)²

h(0)=25

This shows the initial height is 25 feet.

Therefore, h(0) show the initial height of the plane, that is 25 feet.

To learn more about the function visit:

https://brainly.com/question/28303908.

#SPJ1

"Your question is incomplete, probably the complete question/missing part is:"

A girl throws a paper airplane from her treehouse. The height of the plane is a function of time and can be modeled by the equation h(t)=25+2.5t-1/2 t². Height is measured in feet and time is measured in seconds.

Evaluate h(0) and explain what this value means in this situation.

On Tuesday, Hayley only has 15 cups of flour and 9 eggs, but she has more than enough butter and


sugar Which system of linear inequalities can Hayley use to model this situation where b represents the


number of loaves of banana bread and represents the number of loaves of zucchini bread?


A /3b + 15


26 +2 9


OB 56 +32 15


3b +59


CS 3b +2:15


16 +2:59


D


26 + 2: 15


| 3b +5359

Answers

Answer:

Step-by-step explanation:

On Tuesday, Hayley only has 15 cups of flour and 9 eggs, but she has more than enough butter and

sugar Which system of linear inequalities can Hayley use to model this situation where b represents the

number of loaves of banana bread and represents the number of loaves of zucchini bread?

A city has a population of 280,000 people. Suppose that each year the population grows by 8.25%. What will the population be
after 14 years?

Answers



Population=280,000X(1.0825^14)= 849,471.2827814284 people.

You didn’t include what this needed to be rounded to. Probably nearest thousand people. 850,000 people.

In ΔRST, s = 620 cm, r = 210 cm and ∠R=17°. Find all possible values of ∠S, to the nearest 10th of a degree.

Answers

Answer:

1843:6754.9709254546.,657675

Step-by-step explanation:

The measure of the angle of the triangle is calculated by the law of sines and m∠S = 59.7°

What is the law of sines?

The relationship between a triangle's sides and angles is provided by the Law of Sines. Trigonometry's law of sines can be expressed as a/sinA = b/sinB = c/sinC, where a, b, and c are the lengths of the triangle's sides, and A, B, and C are the triangle's respective opposite angles.

Law of Sines :

a / sin A = b / sin B = c / sin C

Given data ,

Let the triangle be represented as ΔRST

Now , the measure of s = 620 cm

The measure of side r = 210 cm

And , the measure of angle m∠R = 17°

From the law of sines , we get

a / sin A = b / sin B

On simplifying , we get

sin ( 17 )° / 210 = sin ( S ) / 620

Multiply by 620 on both sides , we get

sin ( S ) = ( 620 / 210 ) x 0.2923717

On further simplification , we get

sin S = 0.86319265203

Taking inverse on both sides , we get

S = sin⁻¹ ( 0.86319265203 )

S = 59.68°

S = 59.7°

Therefore , the value of S is 59.7°

Hence , the measure of angle m∠S = 59.7°

To learn more about law of sines click :

https://brainly.com/question/13098194

#SPJ3

Can someone pleaseeee help and if you’re correct i’ll give brainliest

Answers

The answer is the
The shape has 6 equal Square face
Because each side had 6

That on of the answer the next the shape has 6 vertices

Also the shape is soild

lol please help me i really don’t get this

Answers

Answer:

If y is inversely proportional to x then y is 3

17 and 18 please no links

Answers

Answer:

17) 135 degrees

Step-by-step explanation:

An octagon contains six triangle, or 1080 degrees, meaning each angle is 135 degrees.

Step-by-step explanation:

1. an octagon contain 6 triangles or 1080 degrees this means with 8 angles each angle is 135 degrees

PLZ HELPPPP

What is the height of a cone that has a volume of 90m³ and has a radius of 3.5 m?

Answers

The answer is 7.02.

This is because pi×r^2×h/3

h=3 90/3.14×3.5^2=7.01581m

Answer:

h = 7.02 m

Step-by-step explanation:

Volume of a cone = ⅓ × πr²h

h = 3 × V/πr²

= 3 × 90/3.14×(3.5)²

≈ 7.015.. m

≈ 7.02 m

If 1/4 of a pound costs $3, how
many pounds can you buy for $1?

Answers

Answer:

1/12

Step-by-step explanation:

1/4 divided by 3

Answer:

I think you can buy 1/3 for one dollar

The point-slope form of a line that has a slope of –2 and passes through point (5, –2) is shown below.

y + 2 = negative 2 (x minus 5)

What is the equation in slope-intercept form?

Answers

Answer: y= -2x+8

Step by step:

Answer:

y= -2x+8

good luck on your assignment

HOW DO YOU SOLVE THESE DIAMOND PATTERNS!!!

Answers

Answer:

Cut them in half and do this

Step-by-step explanation:

1/2(?)(?)

Answer: The pattern of the numbers is constant: On the left and right side of the diamond, you have two numbers, sometimes called factors;In the top part you can find their product; and In the bottom section - their sum

Step-by-step explanation:

answer for brainilest and 11 points

Answers

Answer:

s = 31t

Step-by-step explanation:

s = 31(1) =31 students

s = 31(3) = 93 students

For every teacher, there are 31 students

Determine which pair of points has a negative slope.
(6,9), (5, 7)
(-9, -2), (3,6)
(-8, 1), (8, -8)
(2, -8), (-1, -9)

Answers

Answer:

(–8, 1), (8, –8)

Step-by-step explanation:

Answer:

(-8, 1), (8, -8) has a negative slope

Step-by-step explanation:

1). y2 - y1 / x2 - x1

7 - 9 / 5 - 6

= 2

2). y2 - y1 / x2 - x1

6 - (-2) / 3 - (-9)

= 2/3

3). y2 - y1 / x2 - x1

-8 - 1 / 8 - (-8)

-9/16

4). y2 - y1 / x2 - x1

-9 - (-8) / -1 - 2

= 1/3

The volume of a cylinder is 720π cm3. The height of the cylinder is 20 cm. What is the radius of the​ cylinder?

Answers

Answer:

Radius = 3.38 cm

Step-by-step explanation:

Here's your solution

=> The volume of cylinder = 720π cm^3

=> The height of cylinder = 20 cm

=> Radius = ?

=> Formula of volume of cylinder = πr^2h

=> 22/7 * r^2 * 20 = 720π cm^3

=> r^2 = (720*7)/20*22

=> r^2 = 11.45

=> r = 11.45

=> r = 3.38 cm

hope it helps

I need help to identify them like for example SAS,SSS,ASA etc.​

Answers

Answer:

AASRHSASA

Step-by-step explanation:

AAS means 2 angles and a non-included side are congruent.RHS means the hypotenuse and the sides of the right-angled triangle are congruent (only applies to right-angled triangles).ASA means 2 angles and that one side between them are congruent.
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