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3 years ago

In m + 8, the variable can have any value.

Mathematics

1 answer:

AfilCa [17]3 years ago

3 0

Answer:

Step-by-step explanation:

Actually, for this equation to be true, m must be 4, as if a + b = c, then c - b is equal to a and vice versa. Here’s an example: If 1 + 2 = 3, then 3 - 2 = 1 and 3 - 1 = 2. So you see, 12 - 8 is equal to 4.

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Suppose a marketing company wants to determine the current proportion of customers who click on ads on their smartphones. It was

Zolol [24]

Answer: 10 customers.

Step-by-step explanation:

The formula to find the required sample size :

$n=p(1-p)(\dfrac z^*}{E})^2$ (1)

, where p= prior population proportion.

n= sample size.

$\sigma$ = Population standard deviation from previous studies.

Let p be prior population proportion of the customers who click on ads on their smartphones .

As per given , we have

p=0.62

E= 0.27

For 92% confidence , significance level : $\alpha=1-0.92=0.08$

The critical value of z for 92% confidence interval from z-table would be

$z_{\alpha/2}=z_{0.04}=1.75$

Put theses values in the formula (1), we will get

$n=(0.62)(1-0.62)(\dfrac{(1.75)}{0.27})^2$

$n=(0.2356)(6.48148)^2= 9.89745775254\approx 10$

Therefore , the company should survey 10 customers .

6 0

3 years ago

Guys pls help me!!!!!!!

9966 [12]

Answer:

36°

Step-by-step explanation:

it's the same as the given number.

lines l, m, and n are parallel to each other and the same line is intersecting all three of them. since the 36° angle is in the same placement as the x° angle, they are the same.

have a lovely day <3

6 0

3 years ago

Does the table represent a function? Why or why not?

Goryan [66]

Answer:

Step-by-step explanation:

one x value cant go to two y values

4 0

3 years ago

Read 2 more answers

Shirley had 9 baseball cards. She bought 2 packets of baseball cards, which gave her a total of 23 baseball cards.