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3 years ago

PLEASE HELP FOR QUESTION 4 I WILL MARK BRAINLIST READ IT CAREFULLY

Mathematics

1 answer:

Elza [17]3 years ago

6 0

hey let me tell you this you just never helped me and cheating is not good so yeah treat people the way you want to be treated and I saw your answers to other people it's not good to cheat just a piece of advice

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A baker melts 80 grams of chocolate that contains 40% cocoa and mixes it with 60

Andrews [41]

Answer:

15%

Step-by-step explanation:

55%-40% = 15% cocoa.

7 0

3 years ago

Read 2 more answers

36 is 12% of what number?

Softa [21]

I hope this helps you

36=?.12%

36=?.12/100

?=36.100/12

?=3.100

?=300

8 0

3 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

Find the solution for X<br> 3x - 5 = 7x + 11

Margarita [4]

Answer:

x=-4

Step-by-step explanation:

3x-5=7x+11 Add like terms

+5 +5

3x=7x+16 Do it again...

-7x -7x

-4x=16 Now divide

x=-4

6 0

3 years ago

Read 2 more answers

Jim earns $1,600 per month after taxes. He is working on his budget and has the first three categories finished. Housing $576 Fo

boyakko [2]

He has used to much money I think but still is if he uses he will have 752 and then he will not have the amount that he needs.

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3 years ago