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olya-2409 [2.1K]
4 years ago
13

-1(7x-4y+5) how do I do it​

Mathematics
1 answer:
vaieri [72.5K]4 years ago
7 0

Answer:

-7x + 4y - 5

Step-by-step explanation:

Apply the multiplicative property:  Multiply every term inside the parentheses by -1.  We get:

-7x + 4y - 5

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I need 20 characters, but the question is the photo
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Explanation: The explanation is in the second image.

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133-189 what is the answer
lara31 [8.8K]

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Step-by-step explanation:

7 0
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An operator in the plant has a monthly salary of $2575. Thirty three percent (33%) of her salary is deducted for income tax.
loris [4]
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6 0
4 years ago
Legalize Marijuana, Part II. As discussed in Exercise 6.12, the 2010 General Social Survey reported a sample where about 48% of
kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

\hat{p} = 0.48

We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get,

0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397

Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.

8 0
3 years ago
I need help with this math problem<br><br>what is 15% of $58?​
Andre45 [30]

Answer:

15% of 58

15÷100×58

may this help u

8 0
3 years ago
Read 2 more answers
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