Answer:
answer one, d
answer two, b
Step-by-step explanation:
Answer: It will take her 7 weeks to save $120.
Step-by-step explanation:
Using the information we can come up with an equation.
If Andre starts with $85 then that will be initial and won't change.She add $5 per week so we could represent that by 5x where x is the number of weeks.
To find how much Ander has saved in total we will represent that by y.
y = 5x + 85 If y is the amount that she has saved over some weeks input 120 in for y and solve for x.
120 = 5x + 85
-85 -85
35 = 5x
x = 7
This means it will take her 7 weeks to save $120.
Answer:
0.89 g/cm³
Step-by-step explanation:
used the formula d=M/V
M is mass which is = 80g
V is volume which is = 90cm³
d = 80/90
d = 0.89 g/cm³
You can solve this using a system of equations:
0.06x + 0.08y = 2060 (interest)
x + y = 29,000 (money invested)
Multiply each term in the second equation by -0.06 to cancel out the 0.06x from the first equation.
-0.06x - 0.06y = -1740
Now add this equation to the first equation and solve for y.
0.06x + 0.08y = 2060
-0.06x - 0.06y = -1740
0.02y = 320
y = 16,000
Since you know y = 16,000 you can substitute it into either of the original equations to solve for x. I picked the second equation because it's simpler, but you could also use the first.
x + 16,000 = 29,000
x = 13,000
So you invested 16,000 at 8% and 13,000 at 6%.