Complimentary angles always equal 90° so the answer is C) 40°.
Hope this helps! :)
1). Since you have -2y and 4y, elimination is easy to do for solving for x..
Keep the first equation and multiply the second equation by 2. Then add.
5x - 2y = -1
8x + 4y = 56
10x - 4y = -2
8x + 4y = 56
-----------------
18x = 54
x = 3
Now we can use substitution to solve for y.
Substitute 3 for x in the first original equation and solve for y.
5x - 2y = -1
5(3) - 2y = -1
15 - 2y = -1
-2y = -16
y = 8
(3, 8)
2.)
3x - y = =16
-4x - y = 21
Multiply both sides of the first equation by -1 to change all signs. Then when you add the equations, you eliminate y and solve for x.
-3x + y = 16
-4x - y = 21
-----------------
-7x = 37
x = -37/7
Now multiply the first original equation by 4 and the second original by 3 to eliminate x and solve for y.
12x - 4y = -64
-12x - 3y = 63
---------------------
-7y = -1
y = 1/7
Solution: (-37/7, 1/7)
First one: x>5
second one: x≥5
im pretty sure its right
Hope this helps love! :)
Answer:85
Step-by-step explanation:
An oil change at City Auto is regularly $30. Mr. Allen has a coupon for 15% off. He wants to know the sale price of the service.
What is the relationship between the sale price and the regular price of an oil change? Complete the statement.
The sale price is (1,2 or 3)% of the regular price.
1. 15%
2. 30%
3. <u>85%</u>
Answer:
x= 0+1+2y-3
then substituting the value of x in eqn i
((0+1+2y-3 ) +3) -2y + 1 = 0
then continue ♥
