Mathematics High School

Solve the system ... y=3x-8 and y=-9x+4

Answers

Answer 1
1] y - 3x = -8
[2] y + 9x = 4

-3x + y = -8 9x + y = 4

Solve equation [2] for the variable y


[2] y = -9x + 4

// Plug this in for variable y in equation [1]

[1] (-9x+4) - 3x = -8
[1] - 12x = -12
// Solve equation [1] for the variable x


[1] 12x = 12

[1] x = 1
// By now we know this much :

y = -9x+4
x = 1
// Use the x value to solve for y

y = -9(1)+4 = -5

{y,x} = {-5,1}

Related Questions

What is the sum of the polynomials
(8x^2-9y^2-4x)+ (x^2-3y^2-7x)

Options:
A: 7x^2-6y^2+3x
B: 9x^2-6y^2+3x
C: 9x^2-12y^2+3x
D: 9x^2-12y^2-11x

Answers

Answer:

D: 9x^2-12y^2-11x

Step-by-step explanation:

(8x^2-9y^2-4x)+ (x^2-3y^2-7x)

1. Eliminate redundant parentheses

8x^2-9y^2-4x+ x^2-3y^2-7x

2. Combine like terms

9x^2-12y^2-11x

3. Solution

9x^2-12y^2-11x

4x + 6 +3=17
"X" is equal to

Answers

Answer:

X is equal to 2. hope it will help you

Answer:

x=2

Step-by-step explanation:

4x+9= 17

4x=17-9 ( because +9 has gone to next side so it's sign is changed -9)

4x=8

x=8/4(4 wasin (×) so sign changed in(÷) )

×=2

Which equation represents a linear function?

A) x = y2

B) y – 2 = x2 + 5x

C) y = x3 + 1

D) 5x + 6y = 12

Answers

Answer:

D) 5x + 6y = 12

Step-by-step explanation:

x = y^2 is Not Linear (Find the degree of the equation to determine if linear.)

y - 2 = x^(2) + 5x is Not Linear (Find the degree of the equation to determine if linear.)

y = x^(3) + 1 is Not Linear (A linear equation is an equation of a straight line, which means that the degree of a linear equation must be 0 or 1 for each of its variables. In this case, the degree of variable y is 1 and the degree of variable x is 3.

5x + 6y = 12 is Linear (Find the degree of the equation to determine if linear.)

Eiman borrowed $8000 at a rate of 14.5%, compounded semiannually. Assuming she makes no payments,
how much will she owe after 6 years?
Do not round any intermediate computations, and round your answer to the nearest cent.?


Answers

Answer:

1,717,351cents

Step-by-step explanation:

Using the compound interest formula

A = P(1+r/n)^nt

P = 8000

r = 14.5% = 0.145

n = 6/12 = 1/2 (semi annually)

t = 6years

Substitute

A = 8000(1+ 0.145/0.5)*(0.5)(6)

A = 8000(1+0.29)^3

A = 8000(1.9)^3

A = 8000(2.146689

A = 17,173.512

Hence the amount owned to the nearest cent is 1,717,351cents

WILL GIVE BRAINLIEST PLZZZZ HELP

Answers

Answer: y= 8295

Step-by-step explanation:

In 5 days, Lan jogged a total of 15 miles. She jogged the same number of miles each day. How many miles did Lan jog each day?​

Answers

75 miles

if u do 15x5 you will get 75 and that's how many miles you will get

on a quiz show ,a contestant was penalized 250 points for an incorrect answer, leaving the contestant with 1050 points. how many points did the contestant have before the penalty?

Answers

the contestant had 1300 points before the penalty

Pls help I will give Brainly to first answer

Answers

Answer:

I think right triangle, but I am not sure.

select all the ordered pairs that satisfy the function: y=1/2x-1


a.(0,-1)

b.(8,7)

c.(-3,-11)

d.(-4,-3)

please and thank you

Answers

Answer:

a 0,-1 d -4,-3 hope this helps

in the equation x+12=30 does x=16 explain your answer

Answers

no x does NOT equal 16. you would substitute x for 16 which gives you 16+12. That equals 28 not 30. The correct answer is x=18

2) Write even or od
oeven
Is zero even or odd... not sure....thank you

Answers

Answer:

Oh my, I actually never thought about it, I guess its even because when u add 1 to it, it turns odd so hmm ID K but i'm going for even

Step-by-step explanation:

Hope this Helps

What is the value of the expression

(-3)^3 + 6^3/12

Answers

Answer:

-9

Step-by-step explanation:

Answer:-9

hope it helps pls mark brainliest

What is the answer to the following
-1+8=​

Answers

Answer:

Step-by-step explanation:

-1+8=7

Answer:

The answer is -1+8=7. sorry if im wrong

PLS HELP ASAP I DONT HAVE TIME FOR THIS, IT ALSO DETECTS IF ITS RIGHT IR WRONG

Answers

Answer:

120

Step-by-step explanation:

Add angle ABC and angle CBD together.

answer is 120, 30 degree angle plus 90 degree angle

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

Answers

Answer:

Step-by-step explanation:

[tex]\frac{3}{4}(x+21) =10\frac{1}{2} \\x+21=14\\x=-7[/tex]

this is my answer x= -7

y = -x + 3
What is the slope for this?

Answers

The slope for this equation is x=3

giving away 100 points to who ever answer

Answers

Answer:

i ajevehjecsgsugeveuehbevrc

Why are you giving away 100 points?

Help please eeeeeeeeee

Answers

Answer:

-5

Step-by-step explanation:

if u add negative and positive of the same numbers the end result is 0

This is the answer it’s -5

During one team's season, the team has won 4 games out of the 12 games they have played. The team will play 42 games by the end of the season. Using this information, predict how many games the team will win.

Answers

Answer:

i say the team would win about 14 games

2x + 2y = 14 y = 3x - 5
X =
y =​

Answers

X= 3
Y=4
I used the substitution method


Which of the following is an example of the identity property of 1?

Answers

Answer:

2 or 1

i mostly think its 2 but im not sure

Step-by-step explanation:

Find the measure of angle x and angle y

Answers

Answer:

x = 76

y = 32

Step-by-step explanation:

Exterior angle is equal to sum of of the interior angles except the angle supplementary (on the same line) to it

x = y + 44

32 + 44 = 76

50 points! Right answers will get brainliest! Random answers will be reported

Answers

Answer:

Hope it helps u

Step-by-step explanation:

When rotating a point 270 degrees counterclockwise about the origin our point A(x, y) becomes A'(y,-x). This means, we switch x and y and make x negative,

hence A(2,1) so after 270 degree counter clockwise rotation the A  become,

A(1, -2)

Please brain-list the answer thanks.....

1 2 hopefully this helps

Help me please with This no need to explain

Answers

Answer:

D

Step-by-step explanation:

D includes all possible outcomes.

Answer:

D

Step-by-step explanation:

D show all the possible answers so D.

square root of 10 simplified

Answers

The answer is 3.16! Hope this helps!!

Answer:

um so i [tex]\sqrt{2} \sqrt{5\\}[/tex] or 3.162

Step-by-step explanation:

Can someone plz help me with this? Only #5, both parts.

Answers

Your answer is 3.0155 × [tex]10^{20}[/tex]

Describe the difference between the two given transformations.

Answers

Answer:

I think it's (A) the image Transformation 1 has an area that is 4 times greater than the image in Transformation 2.

Step-by-step explanation:

if not then correct me plz

what is the distance rounded to the nearest tenth between the points (2 -2) and (6 3)

Answers

Answer:

The distance between the points is approximately 6.4

Step-by-step explanation:

The given coordinates of the points are;

(2, -2), and (6, 3)

The distance between two points, 'A', and 'B', on the coordinate plane given their coordinates, (x₁, y₁), and (x₂, y₂) can be found using following formula;

[tex]l = \sqrt{\left (y_{2}-y_{1} \right )^{2}+\left (x_{2}-x_{1} \right )^{2}}[/tex]

Substituting the known 'x', and 'y', values for the coordinates of the points, we have;

[tex]l_{(2, \, -2), \ (6, \, 3) } = \sqrt{\left (3-(-2) \right )^{2}+\left (6-2 \right )^{2}} = \sqrt{5^2 + 4^2} = \sqrt{41}[/tex]

Therefore, the distance between the points, (2, -2), and (6, 3) = √(41) ≈ 6.4.

What is the name of the decimal number?
3.54

Answers

Answer:

Three and fifty four hundredths.

I hope this helps!

Answer:

54 hundreths

Step-by-step explanation:

Write the expanded form of the expression
y(0.25 +6)

Answers

Answer:

free points for a easy question.   You do 0.25+6 in expanded form

Step-by-step explanation:

0.25y +6y is the expanded form of expression y(0.25 +6)

What is Number system?

A number system is defined as a system of writing to express numbers.

An expression is combination of variables, numbers and operators.

The given expression is y(0.25 +6)

y times of zero point two five plus six

In the given expression y is the variable and plus is the operator

y(0.25 +6)

Apply the distributive property of addition

0.25y +6y

Hence, 0.25y +6y is the expanded form of expression y(0.25 +6)

To learn more on Number system click:

https://brainly.com/question/22046046

#SPJ5

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