Answer:
C
Step-by-step explanation:
<u>Equation A</u>
16x - 7 = 11x - 32
(16x - 7) - 11x = (11x - 32) -11x
5x - 7 = -32
(5x - 7) + 7 = (-32) + 7
5x = -25
(5x)/5 = (-25)/5
x = -5
<u>Equation B</u>
-4x - 10 = 2x + 20
(-4x - 10) - 2x = (2x + 20) - 2x
-6x - 10 = 20
(-6x - 10) + 10 = (20) + 10
-6x = 30
(-6x)/-6 = (30)/-6
x = -5
Both Equation A and Equation B have a solution of -5.
6x5=30/2=(15)
2x3=6
15-6=11
11 is the answer
Answer:
25,132.74 miles
Step-by-step explanation:
Hello!
We are basically asked to find the circumference of the Earth's cross-section.
Circumference: 
We can replace 2r with the diameter, because the diameter is 2 times the radius.
Multiply the Diameter by pi:
It is around 25,132.74 miles around.
Answer:
Answer. 105 ounces of water is needed.
Let W = the volume of water to be mixed in ounces).
Then the volume of the 30% salt solution needed is (210-W).
The balance equation for the salt mass is
0.3*(210-W) = 0.15*210.
Simplify and solve for W:
63 - 0.3W = 31.5,
63 - 31.5 = 0.3W,
0.3W = 31.5,
W = 31.5%2F0.3 = 105.
Answer. 105 ounces of water is needed.
Step-by-step explanation:
Answer:
depositing $350 as the principle amount, with an interest of 6% compounded monthly results in more money after 2 years
Step-by-step explanation:
The formula for calculating future value:
FV = P (1 + r)^nm
FV = Future value
P = Present value
R = interest rate
m = number of compounding
N = number of years
$350 x ( 1 + 0.04/4)^(4 x2) = $379
$350 x (1 + 0.06/12)^(12 x2) = $394.51