Answer:
2.193 cm³
Step-by-step explanation:
density is mass divided by volume:
you can manipulate the formula by multiplying with volume:
then dividing by density:
in this case:
Answer:
Step-by-step explanation:
÷ 
needs to be flipped and multiplied.
It will become · 
.
Simplify the fractions by replacing 7 with 1 and 49 with 7, since 7 is 1/7 of 49. Then, turn the 2 into a 1 and the 4 into a 2, since 2 is half of 4.
You will be left with 1 · , which equals
Answer:
D. 327.25
Step-by-step explanation:
You start out with a gross pay of $415.00. When you have a deduction from your gross pay, it means it gets subtracted. So subtract the deductions of 48, 31.25, and 8.50 from 415 and it leaves you with 327.25.
415 48-31.25-8.50 = 327.25
Solving this problem will require a system of equations. Since it's already assigned variables, we can make the equations. They are as follows.
x + y = 13 (The sum of the two numbers, x and y, is 13.)
2x - 3y = 1 (Two times the first number minus three times the second number is 1.)
To solve this system using the substitution method, isolate either x or y in the first equation. I'll isolate y.
x + y = 13
y = 13 - x
Substitute 13 - x for y into the second equation and solve algebraically for x.
2x - 3y = 1
2x - 3(13 - x) = 1
2x - 39 + 3x = 1
5x - 39 = 1
5x = 40
x = 8
Substitute 8 for x into either of the original equations and solve algebraically for y.
x + y = 13
8 + y = 13
y = 5
Check all work by plugging the x- and y-values accordingly into each equation.
x + y = 13 => 8 + 5 = 13
2x - 3y = 1 => 2(8) - 3(5) = 1 => 16 - 15 = 1
Answer:
<span>c: x = 8, y = 5
</span>
(8, 5)
