X+y=180
they are adjacent angles
x=50
y=130
I'll just do a relative frequency for the whole table:
Enjoyed Did not Enjoy Total
Males 47 13 60
Females 53 3 56
Total 100 16 116
Enjoyed Did not Enjoy Total
Males 47/116 = 0.41 13/116 = 0.11 60/116 = 0.52
Females 53/116 = 0.45 3/116 = 0.03 56/116 = 0.48
Total 100/116 =0.86 16/116 = 0.14 116/116 = 1.00
<span>
I'm not sure where a and b should be but based on the table: it can a = 41% ; b = 3% or a = 47% or b = 3%</span>
=30m-3 is -3(1-8m-2n) written in standard form
Answer:
175 cm
7 years
Step-by-step explanation:
Here is the complete question
When Vlad moved to his new home a few years ago, there was a young oak tree in his backyard.
He measured it once a year and found that it grew by 26 centimeters each year. 4.5 years after he moved into the house, the tree was 292 centimeters tall.
1. How tall was the tree when Vlad moved into the house?
2. How many years passed from the time Vlad moved in until the tree was 357 centimeters tall?
The formula for calculating future value:
FV = P + (r x n)
FV = Future height of the tree
P = Present height of the tree
R = growth rate
N = number of years
292 = p + (26 x 4.5)
292 = p + 117
p = 292 - 117
p = 175 cm
b. 357 = 175 + (26 x n)
375 - 175 = 26n
182 = 26n
n = 182 / 26 = 7 years
