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Marysya12 [62]
2 years ago
13

A survey was conducted to see what kinds of activities high school and college students liked best. The table shows the results

of the survey.
Bowling Hiking Swimming Total
8-B
12-H
10-S
30-T
High School^
10-B
14-H
16-S
40-T
College^
18-B
26-H
26-S
70-T
Total^
Choose two correct conclusions using the results of the survey.
O A. Students in high school were more likely to prefer bowling than students in college.
B. Students in high school were more likely to prefer swimming than students in college.
C. Students who prefer bowling were more likely to be in college than students who prefer hiking.
D. Students who prefer swimming were more likely to be in high school than students who prefer hiking.
(The letters are abbreviations for the sports to help see it)
Please hurry I’ll mark it brainliest!!
Mathematics
2 answers:
Alja [10]2 years ago
7 0

Answer:

C & D

Step-by-step explanation:

Because A&B are wrong

Marianna [84]2 years ago
5 0

Answer: C & D

Step-by-step explanation:

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Find the length of hypotenuse of a right triangle with legs of 8 and 15
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Answer:

17

Step-by-step explanation:

(8×8) + (15×15) = 289

square root of 289 is 17

3 0
2 years ago
Refer to the equation 2x − 6y = 12.
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(-1,3) (0,6) (1,9) (2,12) and (3,15)

The pattern is up 1 over 3
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3 years ago
How much would an object with a mass of 5 kg weigh on planet a
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The answer is 28.5 N
4 0
3 years ago
A 10​-ft vertical post casts a 12​-in shadow at the same time a nearby cell phone tower casts a 126​-ft shadow. How tall is the
SVEN [57.7K]

The cell phone tower is 1260 feet tall

<em><u>Solution:</u></em>

Given that 10​-ft vertical post casts a 12​-in shadow

At the same time a nearby cell phone tower casts a 126​-ft shadow

To find: height of cellphone tower

We can use proportion to solve the sum

\frac{\text {height of post }}{\text {shadow of post}}=\frac{\text {height of tower}}{\text {shadow of tower}}

Here,

Let "x" be the height of tower

height of post = 10 feet

shadow of tower = 126 feet

shadow of post = 12 inches

We know that,

1 inches = 0.0833333 foot

12 inches = 12 x 0.0833333 foot = 1 foot

shadow of post = 1 foot

Thus the proportion becomes,

\frac{10}{1} = \frac{x}{126}

10 \times 126 = x \times 1\\\\x = 10 \times 126 = 1260

Thus the cell phone tower is 1260 feet tall

5 0
3 years ago
Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping c
g100num [7]

Answer:

a) 0.4567

b) 6 hours                      

Step-by-step explanation:

We are given the following information the question:

The battery life follows a normal distribution with

\mu = 9.75\\\sigma = 2.3

Formula:

z = \displaystyle\frac{x-\mu}{\sigma}

a) We have to find probability such that battery life exceeds 10 hours, that is,

P(X>10)

P(z > \displaystyle\frac{10 - 9.75}{2.3}) = P(z>0.1086)\\\\= 1 - P(z \leq 0.1086)\\= 1- 0.5433\\=0.4567

b) We have to find battery life such that

P(X \leq x) = 0.05\\\\P(z \leq \displaystyle\frac{x-9.75}{2.3}) = 0.05\\\\\displaystyle\frac{x-9.75}{2.3} = -1.64 \\\\x = (-1.64)(2.3) + 9.75\\x = 5.978

Here, we calculated the value of z from the normal distribution table.

So, after approximately 6 hours one should plan to recharge the phone.

7 0
3 years ago
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