Answer:
a. 16
b. 26
c. (11,13) and (17,19)
d. 3,8,12
Step-by-step explanation:
1. 2x8 = 16, sum of 1 +6 ( 2 digits)= 7
2. 2+3+5+7+11= 28
3. 10 to 20 ( 11,13,17,19) so we can make a pair that has difference of 2 like (11,13)
4. I will attach
Answer: Lines R and B are perpendicular
Step-by-step explanation: Slope of R is -1 and the slope of B is 1. Perpendicular lines have opposite slopes
I think it would be a 60 penny's and the interest is 2 x 30
Answer:
2c -2 = Steve's age 2 years ago
Step-by-step explanation:
<span>Let x=0.8888...
x=0.8888 Start with the given equation
10x=8.8888 Multiply both sides by 10. The goal is to move the decimal point to the next repeating portion (which is just one spot to the right)
Now subtract the equation x=0.8888 from 10x=8.8888 to get
10x-x=8.8888-0.8888
9x=8 Combine like terms. Notice how the decimal portions cancel out.
x=8/9 Divide both sides by 9 to isolate x
So the answer is x=8/9 which means that 8/9=0.8888 (where the 8's repeat)</span>
