Answer:
x = -15
Step-by-step explanation:
In fractional equations we cross multiply the expressions:
In cross multiplying the denominator of the first fraction is multiplied with the numerator of the second fraction and vice versa:
-2x = 30 divide both sides by -2
x = -15
Answer:
original price = $40
Step-by-step explanation:
if 70% ---> $28 then
1% ---> $28/70 = $0.4
then we know original price should be 100%
original price = 100 * 0.4 = $40
OR
basic easy function:
(28/70) * 100
$40
Answer:
I used the surface area equation of rectangular prism (2LW+2LH+2WH) and I got 422sq. in and I divided that to $0.07 and got $30.94.
Step-by-step explanation:
this is the real answer i took the test and got it right
Answer:
only 1/4 produces a rational number when added to 0.5.
Step-by-step explanation:
First, let's write an equation for the situation.
Jim's weight is 30 pounds less than Tom's, so his weight is:
n - 30
If Tom's and Jim's weights add to 210:
n + (n - 30) = 210
Solve for n:
2n - 30 = 210
2n = 240
n = 120
Tom weighs 120 pounds.