3 * 3 = 9 - 1 = 8
Hope this helped! Please mark brainliest if this helped at all! Thank you, I hope you have a great rest of your day!
Answer:
b. 15a +20b
Step-by-step explanation:
Given:
5 (3a+4b)
= 15a + 20b
a. 15a + 4b
Not equivalent
b. 15a +20b
Equivalent
c.5a+3a+4b
= 8a + 4b
Not equivalent
d. 5a+10a b+3b
= 15a + 4b
Not equivalent
e. 10a +5a +15b +3b
= 15a + 18b
Not equivalent
Vertical angles are equal to each other, so:
1)
2a - 3bc = -9
2a = -9 + 3bc
a = -9/2 + 3bc/2
2)
Reciprocal of -2/3 is -3/2
3)
reciprocal of -1 is -1/1 or -1
Hope this helps :)