Answer:
Length is 3 meters and the Width is 5 meters
Step-by-step explanation:
L*W=15
L=2W-7
(2W-7)W=15
(2W+3)(W-5)=0, don't use (2W+3)=0, because it gives you a negative dimension.
W=5, L=3
By addition of the ratio, 5/8 people are adults
144 * 5/8 = 90
For the first one, the answer is -1 1/5
for the second one, the answer is 2.75
for the third one and fourth one,
To divide fractions take the reciprocal (invert the fraction) of the divisor and multiply the dividend. This is the quickest technique for dividing fractions. The top and bottom are being multiplied by the same number and, since that number is the reciprocal of the bottom part, the bottom becomes one
Answer:
-0.5
Step-by-step explanation:
Average rate of a function f(x) in the interval a to b is given by
Average rate of change =
Here we are given a graph. From the graph we find out f value at end points
a=0: f(0) = 2: b=2:f(2) = 1
Substitute in the average rate of change formula to get
f(2)-f(0) =1-2 =-1
b-a = 2
Hence average rate of change = -1/2
=-0.5
(Negative value indicates the change is decrease. i.e. when x increases f decreases)
Answer:
x = 25
Step-by-step explanation:
2x - 14 = 36
2x = 50
x = 25
Proof
(25-7)*2 = 36
18*2 = 36