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3 years ago

I NEED HELP ASAP PLEASE PLEASE HELP ME

Mathematics

1 answer:

beks73 [17]3 years ago

8 0

Answer:

36 + 42 = 6(6 + 72)

Step-by-step explanation:

36 + 42 = 78 - 6 = 72 = 6(6 + 72)

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Someone help me plz it’s fast easy plz

Fantom [35]

Answer:

(2,3,4)

First you take the exponent and times 2 by two then you get four then you subtract the 4 from the 1 and you get three then group thennumbers that gotten used

4 0

3 years ago

Techwiz electronics makes a profit of $35 for each MP3 player sold and $18 for each DVD player sold. Last week, Techwiz sold a c

kicyunya [14]

The combined total profit is (17x + 2502) dollars

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

Profit for each Mp3 player = $ 35

Profit for each DVD player = $ 18

Let x be the number of MP3 players sold last week

Number of MP3 players = x

Last week, Techwiz sold a combined total of 139 MPS and DVD players

Total number of mp3 and dvd sold = 139

Number of DVD player = 139 - x

<em><u>Write an expression for the combined total profit (in dollars) Techwiz made from MP3 and DVD players last week.</u></em>

Combined total profit = Number of MP3 players x Profit for each Mp3 player + Number of DVD player x Profit for each DVD player

$combined\ total\ profit = x \times 35 + (139-x) \times 18\\\\combined\ total\ profit = 35x + 2502-18x\\\\combined\ total\ profit = 17x + 2502$

Thus the combined total profit is (17x + 2502) dollars

3 0

3 years ago

You want to estimate the proportion of kids between the ages of 12 and 15 who have tried marijuana. You take a random sample of

kirill115 [55]

<h2>Answer with explanation:</h2>

Let p represents the population proportion.

By considering the given information, we have

$H_0: p=0.29\\\\H_a: p\neq0.29$

∵ the alternative hypothesis is two tailed , so the test is two-tailed test.

Given : For sample size :n= 130, $\hat{p}=0.23$

Test statistic: $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

$z=\dfrac{0.23-0.29}{\sqrt{\dfrac{0.29(1-0.29)}{130}}}\\\\=-1.50762993902\approx-1.51$

P-value (two -tailed test)= $2P(z>|-1.51|)=0.1310434\approx 0.131$

Since , the p-value (0.131) is greater than the significance level (0.03), so we accept the null hypothesis.

Thus , we conclude that we have sufficient evidence to support the null hypothesis that the true population proportion of Maryland students who have smoked marijuana is 29% .

5 0

3 years ago

What is the volume of a cone with a diameter of 30 feet and a hight of 60 feet

ivolga24 [154]

Answer:

4500 $\pi$ $ft^{3}$ or 4712.39 $ft^{3}$