Solve the system of linear equations by substitution.
3x + y = -3 -2x + y =7

Answers

Answer 1
both equations are equal to 0
Answer 2

Answer:

(-2, 3)

Step-by-step explanation:

First solve one equation for y:

[tex]-2x+y=7\\y=7+2x[/tex]

Now we can substitute this equation into the other one:

[tex]3x+7+2x=-3[/tex]

Solve for x:

[tex]x=-2[/tex]

Now substitute this value into the equation [tex]y=7+2x[/tex]:

[tex]y=7+2x(-2)[/tex]

Solve for y:

[tex]7=3[/tex]

Now your solution is (-2,3)

Hope this helps! :)


Related Questions

Which expression is equivalent to -6(3x-2/3)

Answers

Answer:

-18x + 4

Step-by-step explanation:

can i please get some help asap

Answers

if my math is right it should be b

If h(a)= 3a+5 and h (a) = 27 the what is the value of a?

Answers

Hey there!

Okay, so when you get a problem like this, all you need to do in insert the given value into the function and solve.

For example:

As you can see, they state that (a) = 27, so you insert 27 in for a in the function and it will look like this:

h(27) = 3(27) + 5

Now you solve on the right side of the equal sign:

3(27) = 81 (you multiply them)

81 + 5 = 86

When you plug the value of 27 in for a in this function, your output is equal to 86.

Answer: 22/3 or 7,(3)

Solution:

h(a)=3a+5

h(a)=27

3a+5=27

3a=27-5

3a=22

a=22/3

a=7,(3)

PLEASE HELP!!!!!!!!!!

Answers

Answer:

3

Step-by-step explanation:

1 1 point
Answer each of the following. Write your final answers in the blanks provided.
A building is 50 ft. high. At a distance away from the building, an architect observes that the angle of elevation to the top of the building is
28° How far is the observer from the base of the building? Round to the nearest foot.

Answers

Answer:

58

Step-by-step explanation:

57.5 round up. 58

PLEASE ANSWER ASAP !!!!!

Answers

Answer:

11

Step-by-step explanation:

well you have to multiply and divide

Answer:

-4

Step-by-step explanation:

Please help me with this equation, you are supposed to find x

Answers

Answer:

I believe its 2/3

Step-by-step explanation:

A rectangle is 12 inches long and 2 inches wide. Find its area. A 22 square inches 14 square inches 24 square inches 26 square inches​

Answers

im almost sure its 24 square inchs

Area of given rectangle = 24 square inches.

The correct option is C.

What is rectangle?

A rectangle is cyclic: all corners lie on a single circle. ; It is equiangular: all its corner angles are equal (each of 90 degrees).

Given,

Length of rectangle = 12 inches

Width of rectangle = 2 inches

Area of rectangle = length × width

                             = 12 × 2

Area of rectangle = 24 square inches.

Hence, 24 square inches is the area of rectangle.

Learn more about rectangle here:

https://brainly.com/question/29123947

#SPJ1

Felix surrounds a 12 in. by 8 in. photo with a frame that is x inches wide. Which quadratic function represents the combined area A of the picture and the frame?

A. A(x) = x^2 + 20x + 96

B. A(x) = x^2 + 40x + 96

C. A(x) = 4x^2 + 20x + 96

D. A(x) = 4x^2 + 40x + 96

Answers

Answer:

D: A(x) = 4x² + 40x + 96

Step-by-step explanation:

Dimensions of photo is;

Length; L = 12 inches

Width; W = 8 inches

Now, this picture is surrounded by a frame that is "x" inches wide. Thus, new dimensions are;

L_new = 12 + x + x = 2x + 12

W_new = 8 + x + x = 2x + 8

New area is;

A_new = (2x + 12) × (2x + 8)

A_new = 4x² + 24x + 16x + 96

A_new = 4x² + 40x + 96

s=ut+ 1/2 at²
u=10 a= -2 t= 1/2
work out the value of s

Answers

s=(10)(1/2)+(1/2)(-2)(1/2)^2
s=5+(-1)(1/4)
s=5-(1/4)
s=4 and 3/4 or 19/4

Factorise fully
70
+ 7z

Answers

Answer:

7(z+10)

Step-by-step explanation:

it is factored fully now

a cupcake recipe calls for 4 cups of flour into cups of sugar. Angelica only has three cups of flour. How much sugar would she need to keep the ratio equivalent if she uses all the flowers she has?​

Answers

Answer:

she would need like 2cups of sugar

can someone answer it plsssssss

Answers

Answer:

3

Step-by-step explanation:

Basketball Arcade Game
You're buying the basketball arcade game for $4,500.00 with 5% tax. How much
will you pay all together? *

Answers

Answer:

$4,725

Step-by-step explanation:

multiply 4,500x0.07=225 add that to 4,500

the answer is $4,725 good luck!

4a) Why are the two triangles congruent? *
H
M
K
J
L

Answers

Answer:

SAS Congruency (see below)

Step-by-step explanation:

First, prove the two triangles congruent:

You should know that ∠HKL ≅ ∠MKL because of Vertical Angles Congruence Theorem because they're vertical angles.

If it's already given that HK ≅ MK and JK ≅ LK, then you can clearly see that you can use the SAS Postulate to prove ΔHKL ≅ ΔMKL.

For a flow chart proof for this, refer to the image:

Try the following puzzle:

A bat and ball cost $1.10.

The bat costs one dollar more than the ball.

How much does the ball cost?

Answers

Answer:

10 cents

Step-by-step explanation:

the bat cost 1 dollar so subtract 1 dollar from 1.10 and you are left with .10 or 10 cents

Answer:

the ball costs $0.05

Step-by-step explanation:

if the total is $1.10, and the bat is $1 more than the ball, you do

1+2x=1.10. do the algebra, and you get 0.05. hope this helps.

a sequence is given by the rule 4n -5.
what is the tenth term in the sequence?

Answers

Answer: 35

because the sequence is given by the rule 4n -5 => a(n) = 4n - 5

the tenth term in the sequence is a(10) = 4.10 - 5 = 35

Step-by-step explanation:

write an absolute value inequality for each graph explain pls?

Answers

Answer:

Step-by-step explanation:

(n) less than or equat to

the answer would be B, because it is

Greta has two pet lizards draco and lizzy for every 11 crickets Greta feeds draco she always feeds lizzy 8 crickets last week Greta fed draco 77 crickets

Answers

greta fed lizzy 56 crickets

Answer:

She feeds Lizzy 56 crickets when she feeds Draco 77.

Step-by-step explanation:

Lets put it as an equality:

[tex]\frac{11}{8}[/tex]  = [tex]\frac{77}{x}[/tex]

We want to solve for x. We can do so by finding how much larger the second fraction is than the first. In this case, 77 is 7 times larger than 11 (77/11=7), so we know that x must also be 7 times larger than 8 (because the fractions are proportional).

Since x is 7 times larger than 8, we can use 7 times 8 to find the value.

7 times 8 is 56

56 crickets for Lizzy!

Hope this helps and makes sense!

How to solve 72 + x+x + 52+80°

Answers

Answer:

2x+204 hope this helps pls give brainlist

Step-by-step explanation:

If f (x) = 4x-3, what is f (x)"?

Answers

Answer:

4x-3

Step-by-step explanation:

F(x) is a function group. In this scenario, f(x) = 4x-3 where x is equal to x.

Will give 15 point
Easy math please explain your work

Answers

Answer:

Answer is 154

Step-by-step explanation:

What is this? Someone please help me

Answers

Answer and Step-by-step explanation:

Haven't done this in a while, so here we go:

The rule (I'm not really sure) would have to be negative number and negative number.

This means that:

(4, 0) would become (-4, 0) A'

(6, -2) becomes (-6, 2) B'

(8, -7) becomes (-8, 7) C'

and (0, -5) becomes (0, 5) D'

#teamtrees #WAP (Water And Plant)

PLEASE HELP MEEE

I don’t under this at all
I don’t need to show my work but I just need the answer or help

Answers

Answer:i think 1

Step-by-step explanation:

Answer:

2x+4=5

Step-by-step explanation:

there are two positive x boxes do 2x 4 positive boxes so +4 and 5 positive boxes.


give your answer as mixed fraction and simplest from .​

Answers

Add the whole numbers.
Then add the numerators.

2 2/6 + 3 2/6 = 5 4/6

Simplify the fraction

5 2/3

what is the simplified form of √45
A) √5
B) √9•5
C) 3√5
D)5√3​

Answers

The simplified form is C .

What kind of angles are 1 and 5 in the picture below?

Answers

Answer:

Step-by-step explanation:

I dont see anything. You need to click link and attach a picture or the image to the question

Answer:

You need to add the picture so we can answer

Step-by-step explanation:

what is
$1,000,000 x 1/3=

Answers

Answer:

333333.3

Step-by-step explanation:

The exact answer is

333333.333333

:)

Mr. Sampson wants to ship a birthday gift to his son in the navy. To meet shipping requirements at the Local U
Pack It We Ship it Store, the perimeter of the rectangular-shaped gift box must be less than 30 inches. Write
and graph an inequality to describe this situation.

X= length
Y= width

Answers

Answer:

Step-by-step explanation:

If length of the box = x

And width of the box = y

Then perimeter of the box = 2(length + width)

                                            = 2(x + y)

Since, perimeter of the box is less than 30 inches.

2(x + y) < 30

x + y < 15

y < -x + 15

Since, this inequality has a sign of less than, line on the graph will be a dotted line.

y intercept of the dotted line y = 15 (by x = 0)

x intercept of the line x = 15 (by y = 0)

Constraints for the graph will be,

x > 0

y > 0

Now we can plot the dotted line by joining the x and y intercepts.

In this graph common region under the dotted line between x axis and y axis will be the solution area of the given inequality.

What is the solution to the system of linear equations graphed below?

Answers

Answer:

Step-by-step explanation:

the last answer D

Other Questions
Factor the expression using the greatest common factor2x + 10 = Keith buys 6 pencils for 90p how much would 11 pencils cost where should buildings be constructed if we want them to survive major earthquakes Find the area of these shapes Why did the Number 11 train crash near Kate Shelley's farmhouse? how do i write 0.87 in words (GIVING BRAINLYIST) 4 1/2 YOU HAVE TO show your work on paper using fraction models! Over the last ~100 years, greenhouse gases have increased, thereby decreasing the effective emissivity of the Earth from 0.6 to 0.5986. How much would the Earth's temperature change simply due to this decrease in emissivity? a. cool by 0.1 -0.2 K b. cool by 0.0 -0.1K c. change by Based on this map, identify a political impact of Napoleon's conquests in Europe. What is 5/9 of 18? I need it for my homework. _____ are bits and pieces of material that end up in a body of water. what has the greatest value 3/10 or 1/2 or 2/5 Which threat would a rhinoceros be least able to detect ?A. A hunter with a strong odorB. A hunter in the distanceC. A fire with lots of smokeD. a nearby lion after a baby rhinoceros Which of these is not a problem facing the many African nations?borrowing billions and not being able to repaygrowing too much fooddisease and lack of good medicinetribalism What type of molecules move by osmosis? Witch one is TRUE out of the four? please help will mark brainliest Please solve -6+7x=50 Read the following statement. How would you categorize the type of claim?Too many Americans are plagued by health issues that could be prevented if they just didnt eat so much junk food.Claim of definitionClaim of solutions or policyClaim of factClaim of cause and effect How come two negatives make a positive, but three negatives makes a negative? Does this have to do with there being an odd/even amounts of negatives and cancelling each other out?