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andrey2020 [161]
2 years ago
12

A group of students were surveyed to find out if they like watching television or reading during their free time. The results of

the survey are shown below:
90 students like watching television
20 students like watching television but do not like reading
80 students like reading
40 students do not like watching television

Like Watching TV
Do Not Like Watching TV

Total
Like Reading 70 10 80
Do Not Like Reading 20 30 50
Total 90 40 130
What percentage of the total students surveyed like both watching television and reading? What is the probability that a student who does not like watching television also does not like reading? (10 points)



Hint: When you have a decimal, convert it to a percent by multiplying 100.

a
69.2% like both watching television and reading; 75% do not like watching TV and reading
b
75% like both watching television and reading; 53.85% do not like watching TV and reading
c
53.85% like both watching television and reading; 75% do not like watching TV and reading
d
61.5% like both watching television and reading; 53.85% do not like watching TV and reading
Mathematics
1 answer:
slava [35]2 years ago
6 0

Answer:

dis dude giving me lecture rn so c\ant answer the best

Step-by-step explanation:sheeesh
(23423)

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FORMULA

D ( desired dose) x V ( vehicle- tablet or liquid)

H ( dose on hand)

D = Dose ordered

H = dose on hand or dose on container label

V = form and amount in which drug comes ( tablet, capsule, liquid)

D= 50mg H= 125mg V= 5ml

50 x 5

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4 0
2 years ago
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Which of the following constants can be added to x2 - 3x to form a perfect square trinomail?
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The constant that can be added to x^2 - 3x to form a perfect square trinomial is 2\frac{1}{4}

The given expression is

x^2 - 3x

To form a perfect square trinomial

(a-b)^2 =a^2-2ab+b^2

The given expression is

x^2 - 3x

first we have to add a constant term with it

x^2 - 3x + z

By comparing the given expression and the perfect square trinomial

a^2 =x^2

a = x

Similarly

-2ab = 3x

where know a =x

Then,

-2b = 3

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Similarly

b^2 = z

(\frac{-3}{2})^2 = z

9/4 = z

Convert the simple fraction to mixed fraction

9/4 = 2\frac{1}{4}

Hence, the constant that can be added to x^2 - 3x to form a perfect square trinomial is 2\frac{1}{4}

The complete question is :

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

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1.

Given:

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Approximately, 77.78%

2.

Given:

Adult Population in 2016 = 3500

Number of employed in 2016 = 1800

Number of Unemployed in 2016= 600

Unemployment rate = unemployed population/ total labor force × 100

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