How do I solve this using substitution? Please write down the steps too.
6x+5y=-16
y=7x+5

Answers

Answer 1

Answer: x = -1 and y = -2

Step-by-step explanation:

You are given two expressions that have a relationship. There are two ways to solve this problem, but I will be going over the easy way. I'm assuming you know how to solve for one variable such as x? Well we can put the y varaible from the first equation in terms of x, from the second equation. Ill show you what I mean:

6x + 5(7x + 5) = -16

I replaced y in the first one in terms of x, so that we can solve just for x.

6x + 35x + 25 = -16

41x +25 = -16

41x = -41

x = -1

Now simply find y by plugging the now known x value into either equation

y = 7(-1) + 5

y = -2

Answer 2

Answer:

x = -1

y = -2

(  -1, -2 )

Step-by-step explanation:

6x + 5y = -16

They gave us what "y" is and its....

y = 7x + 5

We substitute the "y" in the equation with this "y = 7x + 5

"

6x + 5y = -16

6x + 5(7x + 5) = -16

Now we need to use the distributive property (multiply what is in the parenthesis by "5")

6x + 5 * 7x + 5 * 5 = -16

6x + 35x + 25 = -16

Combine Like Terms ( 6x and 35x)

41x + 35 = -16

Subtract 25 on both sides

41x + 35 - 25 = -16 - 25

41x = -41

Divide by 41 on both sides to isolate the variable

41x/41 = -41/41

x = -1

Now that we have what "x" is (-1) we can use that to find out what "y" is.

y = 7x + 5

Substitute the x with -1

y = 7x + 5

y = 7(-1) + 5

y = -7 + 5

y = -2

x = -1

y = -2

( x, y )

( -1, -2 )

Hope this helped!

Have a supercalifragilisticexpialidocious day!


Related Questions

Alexis simplified 14/42 to 1/3 by using the greatest common factor (GCF) of 14 and 42

What number did alexis use?

A. 2
B. 14
C.42
D. 84​

Answers

Answer: 14

Step-by-step explanation:

The radius of a circular sign is 12 inches. Equal parts of the sign are painted red and yellow. How many square inches are painted in each color? Use 3.14 for Pi

Answers

Answer:

226.08 square inches

Answer:

Step-by-step explanation:

First we find Area

12^2* 3.14= 452.16

Then we know that half of the sign is painted red and the other half is painted yellow

452.16 / 2 = 226.08

226.08 square inches is painted yellow and 226.08 square inches is painted red

HELP ASAP PLS!!! 30 POINTS AND BRAINLEST IF UR RIGHT
ANSWER ALL FOUR TO GET BRAINLEST!!!!!!

Answers

Answer:

C,D,A,A

Step-by-step explanation:

Answer:

1. B

2. B

3. C

4. B

Least to greatest
8/9 0.51 3/5

Answers

.51 then 3/5 then 8/9

Answer:

0.51 ,8/9, 3/5

Step-by-step explanation:

that is pretty self explanatory, i hope that helps!

S=-100w+1050 X intercept

Answers

Answer:

i believe it’s 10.5

Step-by-step explanation:

It is 10.5 I think. Good luck!!

I reallyyyy need help and i gotchu wit a lot of points if you can help me

Answers

Answer:

a. $14.99k + $24+ $25 = x

b. $14.99(3) + $24+ $25 = x

   $44.97 + $24 + $25 = $93.97

Step-by-step explanation:

Answer:

i) C= $14.99 k + $24

ii) $93.97

Step-by-step explanation:

Let the number of models be represented by -----------k

Let the amount spent on books to be--------$24

The equation that represent amount spent in the mall is given as;

C= $14.99 k + $24   ---------------where ;

C= the equation for the total amount spent in the mall

k = the number of plane models

ii)

Using the equation : C= $14.99 k + $24    and if k = 3 and the amount spent on the store is $25  then ;

C= $14.99 * 3 + $24 = $44.97 + $24 = $68.97

C+ 25 = $68.97 + 25 =$93.97

How you Can find the area of a composite figure?​

Answers

Answer:

Here are the steps to find the area of a composite figure.

1. Split the composite figure into simpler shapes.

2. Find the area of each of the simpler shapes.

3. Add the area of all the simpler shapes together.

4. You'll have the area of the composite figure.

Let me know if this helps!

Me.Lee ordered some pizzas to be delivered. The bill for the pizza was m dollars. Mr. Lee tipped the pizza delivery driver 15% of the bill. Write an expression for the total amount of money Mr. Lee paid

Answers

The expression would be: m + 0.15m and to know how much she paid I believe it would be 26.09 (rounded)

what is 64 thousandths in decimal form​

Answers

I am pretty sure it is 0.064. Hope this helps

The answer is .00064, because if you were to make in Thousand form it would look like this ➡️ 64,000. See the 3 Zeros? that is what makes it a thousand. now wht woul happen if we switched that around? well it would look like this ➡️ .00064. as you can see, there are 3 zeros, like in the last example. so your answer is ''.00064''

PLEASE HELP ME
What is the value of this expression

Answers

3! i took the test and it was correct.

Answer:sorry

Step-by-step explanation:

name the x- and y- intercepts for equation 2x- y=6

Answers

Answer:

i dunno this im in third grade

Step-by-step explanation:

The y intercept is -6
The x intercept is 3

what is 68,302 divided by 1,000

Answers

The answer is 68.302

DESPERATE WILL GIVE BRAINLIST AND THANKS
A right rectangular prism is shown.

What is the length of DH¯¯¯¯¯¯ to the nearest tenth of an inch?

Drag and drop the answer into the box.

Response area in.
1.82.43.55.4
A cuboid with points labeled from A to H. It has a height of 3 inches, a width of 1.5 inches, and a depth of 1 inch.

A.3.5
B.1.8
C.2.4
D.5.4

Answers

Answer:

Step-by-step explanation:

Sorry but there's know question.

Answer:

3.5 Inches

Step-by-step explanation:

use the given functions to answer the question.
f(x)=x^2+2x-5
g(x)--3x^2-4x+1
what is f(x)-g(x)

Answers

f(x)=x^2+2x-5

g(x)--3x^2-4x+1

what is f(x)-g(x)

f(x)-g(x)= x^2 + 2x - 5 - 3x^2 - 4x + 1

Group like terms.

x^2 - 3x^2 + 2x - 4x - 5 + 1

Add/Subtract similar terms

2x^2 - 2x - 4

f(x) - g(x) = 2x^2 - 2x - 4

-2x²-2x-4

Is the answer. I know because I took the test.

Solve by completing the square x^2-10x-24=0

Answers

Step-by-step explanation:

=x²-10x-24

=x²-4x+6x-24

=x(x-4)+6(x-4)

=(x-4)(x+6)

hope it helps.

There is more than one answer!

Answers

Answer:

I think it's B and D

Step-by-step explanation:

3x^(2)+5x-2=0

solve step by step using quadratic formula.

Answers

Answer:

x=1/3,-2

Step-by-step explanation:


Substitution:
2x - y = 6
x + y = -3

Answers

Answer:

4 and for x+y is 2+1

Step-by-step explanation:

Leah leaves school to go home. She walks 5 blocks north and then 8 blocks west. How far is Leah from the school?

Answers

Answer:

13 Blocks Away From School

Step-by-step explanation:

5 + 8 Is 13

Answer: 13 blocks from school

Step-by-step explanation:

I NEED HELP

The table shows the measured dimensions of a prism, and the maximum and minimum possible values based on the greatest possible error. Find the percent error to the nearest percent. Hint: First determine the measured volume, then the maximum volume and the minimum volume.


A. 65%


B. 50%


C. 35%

Answers

The answer could be B not sure hold up don’t pick yet

Answer: 50% said the person up

2.248 divided by 5.62

Answers

Answer:

0.4

Step-by-step explanation:

Answer:

44.128114

Step-by-step explanation:

Explain how to isolate the variable in the equation−2/3+7=15. solve for n

Answers

Answer:

  n = - 0.0833

Step-by-step explanation:

Given  expression

             [tex]\frac{-2}{3n } +7 = 15[/tex]

Cross multiplication , we get

           [tex]\frac{-2}{3n } = 15 -7[/tex]

          [tex]-2 = 8 X 3 n[/tex]

  ⇒   [tex]\frac{-2}{24} = n[/tex]

     n = - 0.0833

PLEASE HELPP I WILL GIVE BRAINLIEST
write the slope intercept form of the equation of each line

Answers

Answer:

Y= - 1/5x-4

Step-by-step explanation:

slope intercept form: y=mx+b

Slope formula: rise/run

(5,-5) AND (0,-4)

-5+-4= -1

 5+0=  5 AKA - [tex]\frac{1}{5}[/tex] or -1/5

The m in y=mx+b is the slope, the equation above is the sloe formula meaning -1/5 is the slope. The b is the y, when it is at 0. The y at 0 for this equation is -4. Thus, when plugging in the equation, y=-1/5x-4

Find the missing length indicated
i will give brainliest to first correct answer
HELP!!

Answers

Answer:

the answer is B. I hope this helps

Step-by-step explanation:

would you like me to explain?

Answer:

I guess (A) 24 is the correct answer

Enter a formula using k to connect the two variables.
F is proportional to a.


Please help​

Answers

Answer:

Weres The Formula?

Step-by-step explanation:

Answer:

f=ka

Step-by-step explanation:

5c -4c +с - 3с
Help please

Answers

Answer:

cannot factor

Step-by-step explanation:

Because they cannot be factored in any other way, we say that they cannot be factored.

Answer:

-2c

Step-by-step explanation:

5c -4c +с - 3с

-1c+c-3c

c-3c

-2c

-3+4b=3(b-2)
what do I have to do slove both sides

Answers

Answer:

b=-3

Step-by-step explanation:

distribute 3(b-2) and you get 3b-6.

-3+4b=3b-6

add 3 on both sides.

4b=3b-3

-3b on both sides

b=-3

Test worth 50 points; test score of 96 write a proportion to find how many points a student needs to score on the test to get the given score.

Answers

Answer: The student needs 144 points to get a score of 96%

Step-by-step explanation:

Find the values of x and y.

Answers

Answer:

x = 15; y = 21

Step-by-step explanation:

The vertical angles have the same measure.

The sum of the measures of the angles of a triangle is 180 deg.

Left triangle:

4y - 18 + y + 14 + 6x - 11 = 180     Equation 1

Right triangle:

6x - 11 + 81 + x + 5 = 180       Equation 2

Simplify Equation 1.

4y - 18 + y + 14 + 6x - 11 = 180

6x + 5y = 195      Equation 3

Simplify Equation 2.

6x - 11 + 81 + x + 5 = 180

7x = 105

Solve last equation for x.

7x/7 = 105/7

x = 15

Substitute 15 for x in Equation 3 and solve for y.

6x + 5y = 195

6(15) + 5y = 195

90 + 5y = 195

5y = 105

y = 21

Answer: x = 15; y = 21

Decide whether or not the relation is a function.

[(0,1), (-5,4), (0,2), (5,-4)]

Answers

Answer:

The relation {(0,1), (-5,4), (0,2), (5,-4)} does NOT represent the relation.

Step-by-step explanation:

We know that a function is a relation where each input or x-value of the X set has a unique y-value or output of the Y set.

In other words, we can not have duplicated inputs as there should be only 1 output for each input.

Given the relation

{(0,1), (-5,4), (0,2), (5,-4)}

From the given relation is clear that the input value x = 0 is repeated twice.

In other words, the input value x = 0 is duplicated.

As we have already mentioned that we can not have duplicated inputs as there should be only 1 output for each input.

Therefore, the relation {(0,1), (-5,4), (0,2), (5,-4)} does NOT represent the relation.

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