Answer:
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
We write what we know.
Jimmy
$50/mo app 65¢ or .65
Lisa
$55/mo app 40¢ or .40
a = number of apps
The difference will come from the number of apps, a.
We need them to equal each other so let's write an equation.
$50 + .65a = $55 + .40a
We need to solve for a.
$50 + .65a = $55 + .40a subtract $50 for each side.
$50 - $50 + .65a = $55 - $50 + .40a
.65a = $55 - $50 + .40a
.65a = $5 + .40a subtract .40a from each side
.65a - .40a = $5 + .40a - .40a
.65a - .40a = $5
.25a = $5 Divide each side by .25
.25a/.25 = $5/.25
a = $5/.25
a = 20
So Jimmy and Lisa need to download 20 apps for their bill to be the same.
Answer:
Your loan was for $16,000.
Step-by-step explanation:
The formula for simple interest is i = prt, where p is the principal, r is the interest rate as a decimal fraction, and t is the time in years.
If i = prt, then p = i / (rt)
Here, p = ($1200) / 0.075 = $16,000
Your loan was for $16,000.
The answer is believed to be around 1500
2b + 5j = 6.35.....multiply by -2
4b + 12j = 13.20
----------------------
-4b - 10j = - 12.70 (result of multiplying by -2)
4b + 12j = 13.20
----------------------add
2j = 0.50
j = 0.50/2
j = 0.25 <==== jars
2b + 5j = 6.35
2b + 5(0.25) = 6.35
2b + 1.25 = 6.35
2b = 6.35 - 1.25
2b = 5.10
b = 5.10/2
b = 2.55 <=== brushes
so 1 brush (b) = 2.55 and 1 jar (j) = 0.25...total, if needed, = 2.80
