Answer: -8
Step-by-step explanation:
1. Combine like terms.
-x - 3 = (x - 3x ) + ( 5 - 16)
2. Simplify.
-x - 3 = -2x - 11
3. To balance the equation, add 2x on both sides.
-x - 3 + 2x = -2x - 11 + 2x
4.
x - 3 = - 11
Solve for x, which gives you -8.
Answer:
a. 80.25
b. 104
Step-by-step explanation:
For (a), you add all the numbers together and divide by 4 because there are 4 test scores.
87 + 92 + 63 + 79 ÷ 5 = 80.25
For (b), we need to set up an equation. It is going to be a similar concept.
87 + 92 + 63 + 79 + x ÷ 5 = 85
x = 104
Hope this helps!
Substitute what you know y is equal to into the equation:
y = x + 2
3/2x - 2 = x + 2
Then you can simplify your equation by multiplying both sides by 2 to eliminate the fraction which will give you:
3x - 4 = 2x + 4
Add the -4 to the other side to get 8 and subtract the 2x from the 3x so you have:
x = 8 Now solve for y by substituting your value for x into the other equation:
y = 3/2(8) - 2 Simplify by combining your numbers and you get:
y = 10 Check your answer by substituting y and x into the original equation:
(10) = (8) - 2
Correctly done! So your answers are x = 8 and y = 10
Answer:
C)150
Step-by-step explanation:
C)150
C)150
C)150