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zepelin [54]
3 years ago
6

Students in Ms. Singh's class had the following scores on their last quiz.

Mathematics
1 answer:
Svetllana [295]3 years ago
8 0
the median of her 20 students is 82.5
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If y varies directly as x and inversely as z, and y=22 when x=4 and z=6, find y when x =10 and z = 25.
Shtirlitz [24]
Solution:
y = kx/z
22 = k(4)/6
22(6) = k(4)
132 = k(4)
132/4 = k
k = 33
y = kx/z
y = (33)(10)/25
y = 330/25
y = 66/5
3 0
3 years ago
Nicholas is buying shirts for his baseball team. He will pay $9.50 for each shirt plus a one-time fee of $22.50 for the design.
Ray Of Light [21]

Answer:

y= 9.50x + 22.50

Step-by-step explanation:

x= number of shirts bought

9.50 is the cost for one shirt, plus the flat fee of 22.50$

8 0
3 years ago
Whats the most accurate estimation of 65+77
Bogdan [553]
You could round 77 to 80 and 65 to 70 and then add 70 and 80 and you will get 150
6 0
3 years ago
Read 2 more answers
Past studies have indicated that the percentage of smokers is estimated to be about 35%. Given the new smoking cessation program
aleksandr82 [10.1K]

Answer:

H0: p = 3.5

H1: p < 3.5

Step-by-step explanation:

We are told that past studies have indicated that the percentage of smokers is estimated to be about 35%, but with the new smoking cessation programs that have been implemented, it is believed that the percentage of smokers has been reduced, we must propose our null and alternative hypotheses, which would be the following:

Null hypothesis: H0: p = 3.5

Alternative hypothesis: H1: p < 3.5

7 0
3 years ago
1/2 divided by 2 3/4
Tems11 [23]

Answer:

2/11

Step-by-step explanation:

2 3/4 = 11/4

1/2 x 4/11 = 4/22 *when you divide a something by a fraction, you flip that fraction to get its reciprocal*

4/22 simplified is 2/11

8 0
3 years ago
Read 2 more answers
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