Step-by-step explanation:
log x = 1 + a
a = log x - 1
log y = 1 - a
a = 1 - log y
So
log x - 1 = 1 - log y
log x + log y = 2
log (xy) = 2
xy = 100
57.5% of the students polled prefer pizza
:P
19) 15/a = 3/2
Start by cross multiplying....
3a = 30
Divide both sides 3
a = 10
21) 2/7 = 4/d
2d = 28
d= 14
23) 8/p = 3/10
80 = 3p
p = 26.66
25) 2 / -5 = 6/t
2t = -30
t = -15
Answer:
Step-by-step explanation:
The hypotheses are:
Null Hypothesis

Alternative Hypothesis

Since the t-statistic score is greater than the critical t-score, so the decision is to reject the null hypothesis.
<u>See image for detailed solution</u>
Answer:
The statement is false
Step-by-step explanation:
-7+5x=5x+9
-5x. -5x
-7=9