Substitute y = 3x + 15 to the equation -4x + 7y = 20:
-4x + 7(3x + 15) = 20 <em>use distributive property</em>
-4x + (7)(3x) + (7)(15) = 20
-4x + 21x + 105 = 20 <em>subtract 105 from both sides</em>
17x = -85 <em>divide both sides by 17</em>
x = -5
Substitute the value of x to the equation y = 3x + 15:
y = 3(-5) + 15
y = -15 + 15
y = 0
<h3>Answer: x = -5 and y = 0</h3>
Answer:
10%
Step-by-step explanation:
Answer:
<u>x = 25</u>
Step-by-step explanation:
<u>Solving</u>
- ∠CAD = 1/2 ∡ CD
- 180° - 90° - (2x)° = 1/2 (80°)
- 2x = 90° - 40° = 50°
- <u>x = 25</u>
Answer:
x = 35
Step-by-step explanation:
You have to make both equation equal to each other.
4x+7 = 6x -63
subtract 6x and 7 from both sides sides
-2x = -70
divide -2 on both sides
x = 35
Answer:
30
Step-by-step explanation:
Use the fundamental counting principal.
There are 6 possible outcomes on one spinner and 5 possible outcomes on the other spinner. Multiply the possible outcomes together to get the total possible outcomes.
6 x 5 = 30