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3 years ago

Solve the following system by any method. –8x – 8y = 0 –8x + 2y = –20

1 answer:

8 0

This one is simple since we already have the two x variables.equal. All we have to do is subtract the equations from one another to get the answer.
So i will subtract the left side by the other left side and the right side by the other right side

-8x - 8y -(-8x + 2y) = 0 -(-20)

distribute negative sign

-8x - 8y + 8x - 2y = 0 + 20

do the math
- 10y = 20
Y = -2

plug t into an equation
-8x -8 (-2) = 0

-8x + 16 = 0
-8x = -16
x = 2
answer (2, -2)

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-6x + 14 < -28<br> AND 3x + 28 < 25

trasher [3.6K]

Answer:

x>7

-6x+14< -28

-14. -14

-6x<-42

÷-6 ÷-6

x<7

switch signs because we divided by a negative number

x>7

Answer: x<-1

3x+28<25

-28 -28

3x<-3

÷3 ÷3

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7 0

3 years ago

(4₊√₋81)₋(9₊√₋9) i cant resolve this equation. thanks for help

bezimeni [28]

The question can't be solved because we can't have negative sign under square root

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2 years ago

Read 2 more answers

What is the slope of the line that passes through 2,-1 and 2,-5

Eddi Din [679]

Answer:

Undefined.

Step-by-step explanation:

When using the formula y2-y1/x2-x1, the result comes out as -4/0. Any number over a 0 is undefined.

3 0

3 years ago

The scale map shows that 5 centimeters =2 kilometers.What number of centimeters on the map represents an actual distance of 5 ki

Nitella [24]

Answer:

Therefore 12.5 centimeters on the map represents an actual distance of 5 kilometers.

Step-by-step explanation:

Given:

The scale map shows that

5 centimeters =2 kilometers.

To Find:

What number of centimeters on the map represents an actual distance of 5 kilometers?

Solution:

Let 'x' cm be on the map to represent 5 kilometer.

Given:

5 centimeters = 2 kilometers.

Therefore,

x cm = 5 kilometer

Soon Equality of proportion we get

$\dfrac{5}{x}= \dfrac{2}{5}\\ \\x=\dfrac{5\times 5}{2}=\dfrac{25}{2}=12.5\ cm\\\\\therefore x = 12.5\ cm$

Therefore 12.5 centimeters on the map represents an actual distance of 5 kilometers.

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3 years ago

Find the equation of the line shown. Enter yoir answwr in slope intercept form

nlexa [21]

Answer:

y = x

Step-by-step explanation:

The equation for slope is y = mx +b. If you look at the line you see that it passes through the origin, this is your y-intercept, 0. If you look at two points at the line and use the rise over run method, you get the slope to be 1. If you substituent these values into the equation you get, y = x.

Hope this helps!

-Luna

8 0

3 years ago