B and a
barry=b
a=older bro
a is 3 more than 3b
a=3+3b
sum is 28
a+b=28
3+3b+b=28
3+4b=28
minus 3 both sides
4b=25
divide both sides by 4
b=6.25
a=3+3b
a=3+3(6.25)
a=3+18.75
a=21.75
barry=6.25 years
21.75 years=older bro
Supplements add up to 180°
so just subtract 164 from 180
180
<u>-164
</u> 16
Answer:
If compounding period is not annual, rate of interest is divided in accordance with the compounding period
Answer:
Part A:
All of her steps are correct except for Step 4. When solving inequalities, when you multiply or divide by a negative number, you have to reverse the sign.
Part B:
Copy her Steps 1-3.
For your last step, (Step 4), you should instead write x>-8/7.
Answer: 7 3/5 + 2 1/2 = 10 1/10
Step-by-step explanation:
Write the fractions to have like denominators to make it easier to add.
7 3/5 will become 7 6/10
2 1/2 will become 2 5/10
Rewrite them as improper fractions:
7 6/10 will become 76/10
2 5/10 will become 25/10
Now add.
76/10+25/10=101/10
Rewrite the sum as a mixed number
101/10 will become 10 1/10
