Answer
Let x = the number of ounces of Solution A
Let y = the number of ounces of Solution B
x + y = 180 y = 180 - x
.60x + .85y = .75(180)
.60x + .85y = 135 Multiply both sides of the equation by 100 to remove the decimal points.
60x + 85y = 13500
60x + 85(180 - x) = 13500
60x + 15300 - 85x = 13500
-25x = -1800
x = 72ounces
y = 180 - 72
y = 108 ounces
Answer:
See below.
Step-by-step explanation:
Find two points on the graph that are easy to read.
Start at one point. You must now go to the other point, but you can only move vertically (up and down) and horizontally (right and left.)
Move vertically toward the other point. Count the number of units you moved. Up is positive, and down is negative. This is the rise.
Now move horizontally to the second point and count the units. Right is positive and left is negative. This is the run.
slope = rise/run
Answer:
w = 2.1
Step-by-step explanation:
5w + 9.2 = 19.7
5w + 9.2 - 9.2 = 19.7 - 9.2
5w = 10.5
5w / 5 = 10.5 / 5
w = 2.1
Here is the check:
5w + 9.2 = 19.7
5(2.1) + 9.2 = 19.7
10.5 + 9.2 = 19.7
19.7 = 19.7
Answer:
mean = 172.72cm and variance = 645.16
Step-by-step explanation:
1 inch = 2.54 centimetres
mean = 68 * 2.54 = 172.72 cm
standard deviation = 10 *2.54 = 25.4 cm
variance = square of standard deviation
variance = 25.4 * 25.4
variance = 645.16 cm
