Answer:
4 pounds
Step-by-step explanation:
- Cost of grapes = $1.99 per pound
- Grapes purchased = x pounds
<u>Equation</u>:
- 10= 1.99x + 2.04
- 1.99x = 10 - 2.04
- 1.99x = 7.96
- x = 7.96/1.99
- x = 4 pounds
Answer:
674.2 lb
Step-by-step explanation:
First we transform all the units into cm
5 ft = 152,4 cm
8 ft = 243.84 cm
1.2 in = 3.048 cm
The volume of the granite rectangular top can be found by multiplying its three sizes
Volume = (152,4 cm)*243.84 cm * 3.048 cm
Volume = 113267.3864 cm^3
We know that
Density = mass/ volume
Mass = Density * Volume
Mass = 2.7 g/cm^3 * ( 113267.3864 cm^3)
Mass = 305821.9432 g = 305.822 Kg
We transform grams to pounds
305821.9432 g = 674.22197 lb
= 674.2 lb
Let the amount invested at 3% = x
Let the amount invested at 6% = y.
From the total amount invested, we get this equation.
x + y = 18
Now we look at the interest earned.
The 3% account earns 0.03x
The 6% account earns 0.06y
5% on the entire amount is 0.05 * 18 = 0.9
This gives us the second equation.
0.03x + 0.06y = 0.9
Now we have a system of 2 equations in 2 unknowns.
x + y = 18
0.03x + 0.06y = 0.9
Solve the first equation for y:
y = 18 - x
Replace 18 - x for y in the second equation.
0.03x + 0.06y = 0.9
0.03x + 0.06(18 - x) = 0.9
0.03x + 1.08 - 0.06x = 0.9
-0.03x + 1.08 = 0.9
-0.03x = -0.18
x = 6
Answer: He invested $6 at 3%.
Answer:
-7
Step-by-step explanation:
Seems like the pattern is adding and then subtracting the next square number up:
7 + 4 = 11
11 - 9 = 2
2 + 16 = 18
so 18 - 25 = -7 is the next number
I believe that expression D is the one that is best