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2 years ago

PLEASE HELP!!! Is my answer correct

Mathematics

1 answer:

alexandr1967 [171]2 years ago

6 0

Answer:

Yes You Are Correct :)

Step-by-step explanation:

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When writing a summary about the theme you should....

vova2212 [387]

Answer: D, All of the above

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A market research firm knows from historical data that telephone surveys have a 36% response rate. In a random sample of 280 tel

Rasek [7]

Answer:

0.6604

Step-by-step explanation:

Given that a market research firm knows from historical data that telephone surveys have a 36% response rate.

Sample size of random sample = 280

We know for samples randomly drawn of large size sample proportion follows a normal distribution with mean= sample proportin and std error

= $\sqrt{\frac{pq}{n} }$

Substitute p = 0.36 and q = 1-0.36= 0.64

p follows N with mean = 0.36 and std dev = $\sqrt{\frac{0.36*0.64}{\sqrt{280} } } \\=0.0287$

Using normal distribution values we can find\

$P(33.5p.c. < p < 39pc)\\= P(0.335$

3 0

3 years ago

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12 is what percent of 96

DaniilM [7]

12 * 100 = 1200/96 = 12.5
Answer = 12.5%
You mulitply 12 by a hunndred, since a percent means "out of a hundred." Then, you divide that, by 96, since, you want to find the percent out of 96.

8 0

3 years ago

The slope of the line passes through the points (3,-6) and (7,y) is -2/3. Find y.

kirza4 [7]

-6-y / 3-7 = -2/3

-6-y / -4 = -2/3

Multiply through by -12:-
3(-6-y) = 8

-18 - 3y = 8
3y = - 26

y = -8 2/3

5 0

3 years ago

Alicia earned d dollars baby-sitting. Her friend earned twice as much. You earned $2 less than Alicia's friend earned. Write an

Semenov [28]

Answer:

$Total = \$5d - 2$

Step-by-step explanation:

Represent Alice with A, her friend with F and you with Y.

From the question, we have:

$A = \$d$

$F = 2 * A$ --- Twice as much Alice means 2 times Alice's earnings

$Y = F - 2$ --- 2 less than her friend

Required

Determine the total amount

$A = \$d$

Substitute $\$d$ for A in $F = 2 * A$

$F = 2 * \$d$

$F = \$2d$

Substitute $\$2d$ for F in $Y = F - 2$

$Y = \$2d - 2$

The total amount is calculated by adding the earnings of Alice, her friend and you

$Total = A + F + Y$

$Total = \$d + \$2d + \$2d - 2$

$Total = \$5d - 2$

<em>Hence, the total earnings is 5d - 2</em>

4 0

3 years ago