Mathematics High School

If you chose to use substitution to solve this system what should your equation look
like?
y=5x-5
y= -4x+22

Answers

Answer 1
Substitution-

Step-by-step explanation:

y=5x-5

y= -4x+22

1- use y=5x-5 solve for y (here you don't really have to do anything)

       This stays the same, Therefore y = 5x-5

2- you will substitute y=5x-5 for y in y= -4x+22. The problem should now look like this:

               5x-5= -4x+22

Solving for x

now, with the equation above you will solve for x-

5x-5= -4x+22         (add 4x to both sides)

9x-5= 22               (add 5 to both sides)

9x=27                   (divide by 9)

x=3

Solving for y

Now that you Know that x=3 you can substitute x=3 for x in y=5x-5. The problem should look like this:

                                                    y= 5(3)-5

Now with the equation above you can solve for y

y= 5(3)-5              (multiply 5 by 3)

y= 15-5                 (subtract)

y=10

Now you have your answers X=3  Y=10

i hope this helps!

Related Questions

HELP PLS ASAP!!!!!!!!!!

Answers

Answer:

ima say 43

Step-by-step explanation:

its hard but look the caculate it

Find the slope of the line through the given points.
(-2,7) and (2,-5)

Answers

Answer:

y = -3x + 1

Step-by-step explanation:

hope this is right!

find value of x. write your answer in simplest radical form ​

Answers

7 √2.

Step-by-step:

I used the Pythagorean theorem.
Then I simplified √98 to 7 √2.

the reciprocal of 9/10

Answers

Answer:

10/9

Step-by-step explanation:

The reciprocal is just flipping the fraction

please help!! i'll give you brainliest, 5 stars, and a thanks

Answers

Answer:

2.25 I think

Step-by-step explanation:

Answer:

to find the answer out you need to find out 2/3 of $4.50 and to do that divide it by three. once you have figured that out multiply it by 2 and you will get your answer

Step-by-step explanation:

see above

Can someone please help! I need this quickly and I’m really struggling!

Answers

Answer:

x = 4

y = 3

Step-by-step explanation:

2x - 3(x - 1) = -1

2x - 3x + 3 = -1

-x + 3 = -1

   - 3     - 3

(-1) -x = -4 (-1)

x = 4

y = 4 - 1

y = 3

Answer:

x = 4, and y = 3

Step-by-step explanation:

I hope i helped you! :D

PLEASE HELPP!!!!! PLSSSSSSSSSS

Kerri Ann's baby sister was 15 pounds at her last check up. This is a 25% increase
from birth. How much did her baby sister weigh at birth?

Answers

she weighted 11.25 pounds x

Answer:

18.75

Step-by-step explanation:

well i still don get it whats the difference between 8 fourty seven and 7 fourty seven

Answers

Given : the difference between 8 forty-sevens and 7 forty-seven.

To find : Solve it.

Solution : We have given a statement

Difference between 8 forty-sevens and 7 forty-seven.

8 forty-sevens mean 847

7 forty-seven mean 747

Difference between them is

847 - 747 = 100.

Therefore,100.

50/20 equals 20 over X​

Answers

Answer:

50/x

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

cross multiply:

50*x = 20*20

50x=400

divide by x (50)

50x/50 = 400/50

x=8

A=6 b=4 c=1/3 what is 9c

Answers

Answer:

9c=3

Step-by-step explanation:If c=1/3      9/3=3

Is the square root of 7 minus the square root of 7 a rational number?

Answers

Answer:

No

Step-by-step explanation:

Forgive me if i'm wrong lol

so the square root of 7 is 2.64, 2.64 minus 2.64 is 0, and it is not rational since it can't be written as a fraction.

dont hate me if im wrong im so sorry <3

Which is equivalent to 644 ?
6442
O 244
O 4
O 16
O 164/4

Answers

Answer:

I belive it would be A

Step-by-step explanation:

The equivalent of 64/4 is 16

How to determine the equivalent?

The expression is given as:

64/4

Evaluate the quotient of 64 and 4 i.e. divide 64 by 4

64/4 = 16

Hence, the equivalent of 64/4 is 16

Read more about equivalent expressions at:

https://brainly.com/question/2972832

What is the difference between the absolute value of -8 and the absolute value of 6?

A) 2
B) 8
C) 14
D) 16

Answers

The answer is A (2).

What is the circumference of a circle whose radius measures 9 inches?

Answers

The circumference is 56.52 , because you have the radius which is 9 but you need to find the diameter to do that you need to multiply 9 times 2 and it gives you 18 and then you just multiply it my pi and the value of pi is 3.14 and then the last step is it multiply 3.14 times 18 and it gives you 56.52

Which point on the coordinate plane is a reflection of point A across the y-axis?

Answers

Point N is a reflection of Point A across the y-axis!
That would be point N!

1. Round to the nearest cent.
$10.456
$11.00
$10.50
$10.45
$10.46

Answers

the correct answer is ^
10.46

Ignore the 10, since it is only to the nearest cent and it doesn’t matter

.465

If a number is 5 or above, it rounds up, if it’s lower than 5 it rounds down

The rounding only affects the 6, since the 6 rounding would affect the 4

50 POINTS! Is the relationship shown by the data linear? If so, model the data with an equation.
The relationship is not linear.
The relationship is linear; y + 4 = 2(x – 1).
The relationship is linear; y – 1 = –2(x + 4).
The relationship is linear;y+4=-1/2(x-1)

Answers

Answer:

The relationship is not linear.

Step-by-step explanation:

Answer:

Where is the picture to model the data?

Step-by-step explanation:

which of the following graphs shows a linear function?​

Answers

Answer:

The last one

Linear function basically means that theres a straight line there that does not curve or change direction

Answer:

D (the last choice)

Step-by-step explanation:

This would be a linear function because it is the only one that is a straight line.

Mary bought a 7lb bag of flour. She used 1/3 of the bag to bake wedding treats.

Answers

Answer:

she is left with 4.67 LB of flour.

Step-by-step explanation:

7 divided by 3 = 2.3333333

2.3333333 x 2 = 4.67

Solve the system of equations using elimination. SHOW WORK!!!!!!!!!!!!!

15q – 4r = 62
5q + 8r = 86

Answers

q= 6

r= 7

work--

Multiply 1st column by -2:

-30q+8r=-124

5q+8r=86

Subtract 2nd column from the first column:

-35q= -210

Solve for q:

q=6

Subtract q=6 by any of the two equations, so:

-30q+8r=-124

-30*6+8r=-124

Solve for r:

r=7

That person is correct! Good luck

show work if can

Simplify the expression:
(3g - 8) - (2g - 1)

Answers

Answer:

g+-7

Step-by-step explanation:

Let's simplify step-by-step.

3g−8−(2g−1)

Distribute the Negative Sign:

=3g−8+−1(2g−1)

=3g+−8+−1(2g)+(−1)(−1)

=3g+−8+−2g+1

Combine Like Terms:

=3g+−8+−2g+1

=(3g+−2g)+(−8+1)

=g+−7

Answer:

[tex]g - 7[/tex]

Step-by-step explanation:

1. Remove parentheses.

[tex]3g - 8 - 2g + 1[/tex]

2. collect like terms.

[tex](3g - 2g) + ( - 8 + 1)[/tex]

3. Simplify.

[tex]g - 7[/tex]

therefor, the answer is g - 7

What is the GCF of 2x2 + 4x + 8?

Answers

Answer:

2

Step-by-step explanation:

[tex]2x^2 + 4x + 8 \\ \\ = 2( {x}^{2} + 2x + 4) \\ \\ \implies gcf = 2[/tex]

2

Step-by-step explanation:

<3 i got it right

cant use thisqwdwiwied

Answers

Answer:

ooffffffffffff have a good day/night lol

Answer:

What?? lol

Step-by-step explanation:

10+20=2(5+___what that’s all I need help on this please

Answers

10 because 2x10 is 20

17.If the diameter of a circle is 18 feet, which is closest to the circumference?
a. 56.52 feet
b. 9 feet
c . 5.73 feet
d . 28.26 feet

Answers

Answer:

a. 56.52 feet

Step-by-step explanation:

Circumference= pi* diameter

pi*18= 56.54

56.54 is closest to 56.52

Will mark brainliest! help asap! Don’t scam

Answers

(-8,-16) I believe ....

I need help with this question please

Answers

R' (5, -4)

Step-by-step explanation:

R (2, -1), with origin = 0

R' ( x, y ), with k = 3

x = 2+3 = 5

y = -1-3 = -4

1. The number of letters received in the mail over the past week is recorded.
2
3
5
5
5
15
Which value appears to be an outlier?
A. 2
B. 3
C. 5
D. 15

Answers

Answer:

nose mijito pide ayuda a tus family

What is the yyy-intercept of y=1+6xy=1+6xy, equals, 1, plus, 6, x?

Answers

Answer:

1

Step-by-step explanation:

Given the equation y=1+6x, the y-intercept occurs at x = 0

Substitute

y = 1 + 6(0)

y = 1+0

Y = 1

Hence the y-intercept of the equation is 1

pls i need help 21÷3+(3×9)×9+5​

Answers

Answer:

that will be 225 ... I think

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