Answer:
8
Step-by-step explanation:
2/7 of 21 is 6 1/3 of 21 is 7. 6+7 is 13. 21-13 = 8
Answer:
Y intercept: (0,3) or 3
Step-by-step explanation:
the b in y = mx + b is the y intercept.
Answer:
Option C, D, E
Step-by-step explanation:
To find : Which pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number?
Solution :
We divide large number by smaller number to get the required answer,
A) 
B) 
C)

D) 
E) 
Option C, D and E pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number.
Answer:
-4
Step-by-step explanation:
-129 = 6(7 + 7x) - 3
Distribute the 6 into the parentheses.
-129 = 42 + 42x - 3
Add like terms.
-129 = 39 +42x
Subtract 39 from both sides.
-168 = 42x
Divide 42 from both sides.
-4 = x
<em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>