Answer:
19% alcohol solution = 65 ounces
37% alcohol solution = 25 ounces
Step-by-step explanation:
Let
19% alcohol solution = x
37% alcohol solution = y
x + y = 90 (1)
0.19x + 0.37y = 90*0.24
0.19x + 0.37y = 21.60 (2)
from (1)
x = 90 - y
Substitute into (2)
0.19x + 0.37y = 21.60
0.19(90-y) + 0.37y = 21.60
17.1 - 0.19y + 0.37y = 21.60
- 0.19y + 0.37y = 21.60 - 17.1
0.18y = 4.5
y = 4.5/0.18
y = 25 ounces
x + y = 90 (1)
x + 25 = 90
x = 90 - 25
x = 65 ounces
Answer:
Step-by-step explanation:
we know that
The equation of the line in slope-intercept form is equal to
where
m is the slope of the line
b is the N-intercept
In this problem we have
Find the slope
Let
substitute the values
Answer:
Step-by-step explanation:
Null hypothesis should be: The average woman's leg hair grows an eighth of an inch per month: u = eighth of an inch
Alternative hypothesis: The average woman's leg hair growth is not an eighth of an inch per month after treatment: u ≠ eighth of an inch
This test after carrying out its treatment will be able to determine if the drug was effective or not
Both numbers (9.00 and 4.25) have three sig-figs. This means that the final answer will have three sig-figs as well.
Multiply the numbers to get: 9.00*4.25 = 38.25 which rounds to 38.3 because the answer must have three sig-figs.
The units will be "square inches" or "inches^2" or "in^2". There are various ways to write the units portion.
Overall, the final answer is 38.3 square inches.
Answer:
34 rounded is 30
Step-by-step explanation:
15 plus 15 is 30 30 plus 4 is 34
