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erica [24]
3 years ago
9

This question is based on the following circle graph.

Mathematics
2 answers:
Law Incorporation [45]3 years ago
6 0

Answer: D. 76

Step-by-step explanation:

Since, the total number of people = 400,

By the given diagram,

The percentage of the number of people who prefer to watch WWCN = 41 %

⇒ The number of people who prefer to watch WWCN = 41% of 400 = 0.41 × 400 = 164

Now, The percentage of the number of people who prefer to watch WANR = 22 %

⇒ The number of people who prefer to watch WANR = 22% of 400 = 0.22 × 400 = 88

Thus, the difference between the number of people who prefer WWCN and WANR = 164 - 88 = 76

⇒ Option D is correct.

Pepsi [2]3 years ago
3 0
41% of 400 is 164 22% of 400 is 88 164-88=76 hope this helps
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The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c
alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }

                          Where E is the error that we are prepared to accept, in this  case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

1-∝/2 = 0.99

z_{0.99} = 2.33

n = \frac{(2.33^{2})(0.5)(1-0.5)}{0.15^{2} }

n = 60.32 costumers

n ≈ 61 costumers

4 0
3 years ago
I need help on this ASAP
klemol [59]

Answer:

The answer is C.

Step-by-step explanation:

When you add the same negative and positive number it's 0.

For Example:

-5 + 5= 0

6 0
1 year ago
Please help with math question
Naddik [55]
1- Solution using graphs:
Take a look at the attached images.
The red graph represents the first given function while the blue graph represents the second given function.
We can note that the two graphs are the same line (they overlap).
This means that any chosen point on one of them will satisfy the other.
This means that there are infinite number of solutions to these two equations.

2- Solution using substitution:
The first given equation is:
y = -5x + 3 ...........> equation I
The second given equation is:
2y + 10x = 6 ...........> equation II

Substitute with I in II and solve as follows:
2(-5x+3) + 10x = 6
-10x + 6 + 10x = 6
0 = 0
This means that there are infinitely many solutions to the given system of equations.

Hope this helps :)

3 0
2 years ago
Hannah is a photographer who specializes in portraits. This morning, she spent four hours doing graduation portrait sessions. In
stiv31 [10]

Answer:

graduation

Step-by-step explanation:

6 0
3 years ago
Denise lives in a two-story house with a basement. The first
Umnica [9.8K]

Answer:

Distance = 110.5 cm

Step-by-step explanation:

It is given that,

The basement floor is at  an elevation of −10.5 feet

The second story floor has an  elevation of 121 feet.

We need to find the distance between the basement floor and the second story floor.

Distance = -10.5 + 121

= 110.5 feet

So, the distance between the basement floor and the second story floor is 110.5 cm.

7 0
2 years ago
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