Answer:
Josie bought 40 adult tickets and 32 children tickets.
Step-by-step explanation:
x+y=72
22x+10y=1200
-----------------------
x=72-y
22(72-y)+10y=1200
1584-22y+10y=1200
1584-12y=1200
12y=1584-1200
12y=384
y=384/12=32
x+32=72
x=72-32=40
x=40, y=32. (40, 32)
Answer:
36.73%
Step-by-step explanation:
Let x = 100
13% increase = 100(1 + 0.13) = 100 + 13 = 113
21% increase = 113(1 + 0.21) = 113 + 23.73 = 136.73
Hence, a single percentage to arrive at 136.73 will be :
x
100(1 + x) = 136.73
100 + 100x = 136.73
100x = 136.73 - 100
100x = 36.73
x = 36.73 / 100
x = 0.3673
0.3673 * 100% = 36.73%
<span>One-eighth of the 32 students = 1/8 of 32 = 1/8 * 32 = 4
Four students went abroad
</span>
Answer:
Step-by-step explanation:
A quarter-note.
Answer:
Step-by-step explanation:
Given : A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 72% .
Let 'p' be the new proportion of high school seniors who felt that "getting rich" was an important personal goal .
Claim :
We know that the null hypothesis has equal sign.
Therefore , the null hypothesis for the given situation will be opposite to the given claim will be :-
And the alternative hypothesis must be :-
Hence, the null hypothesis and the alternative hypothesis that we would use for this test :