Answer:
In every case, the first given x is smaller than the second given x (e. g., in A, x=0 is smaller than x=6. Thus, the change in x from 0 to 6 is positive.
Step-by-step explanation:
Answer: The professor was not accurate with his hypothesis.
Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%
The alternate hypothesis: At least one proportion of the student will differ from the others.
Step-by-step explanation: To check if the professors hypothesis were inaccurate.
What percentage of student bought a hard copy of the book.
(25 ÷ 200) × 100 = 12.5%
What percentage of the student printed it from the web.
(85 ÷ 200) × 100 = 42.5%
What percentage of the students read it online.
(90 ÷ 200) × 100 = 45%
This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.
Therefore; the null hypothesis are
P1 = 12.5%, P2 = 42.5%, P3 = 45%
The alternative hypothesis will state that at least one of the proportion will be different from the others.
Answer: 1/4 the pizza
Step-by-step explanation:if they both had a half a pizza but he only ate half of that that means he would had only ate 1/4 the pizza
{0.15x+0.06y=930 //*20
{x+y=8000 //*3
{3x+1.2y=18600
-
{3x+3y=24000
-1.8y=-5400
y=3000
x=8000-3000=5000
Planner need to invest $5000 with 15% rate and $3000 with 6% rate
7B = 9B - 180
REARRANGE THE VARIABLE ON ONE SIDE AND NUMBER ON THE OTHER SIDE.
we get,
180 = 9B -7B
180 = 2B
therefore B = 180/2
= 90 CALORIES IS THE ANSWER