3 years ago

Please help i cant fail

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

4 0

Answer:

3a+13

Step-by-step explanation:

Add 5 and 8 together to get 13

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Solve the missing side in the right triangle below

maw [93]

Answer: the root of 145 so b

Step-by-step explanation:

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3 years ago

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A political candidate has asked his/her assistant to conduct a poll to determine the percentage of people in the community that

Delvig [45]

Answer: The size of sample of 193 is needed.

Step-by-step explanation:

Since we have given that

Margin of error = 6%

At 90% confidence level, z = 1.645

Let p = 0.5

and q = 0.5

( because it is the most conservative estimation).

So, using formula, we get :

$e=z\times \sqrt{\dfrac{p(1-p)}{n}}\\\\0.06= 1.645\times \sqrt{\dfrac{0.5\times 0.5}{n}}\\\\\dfrac{0.06}{1.645}=\sqrt{\dfrac{0.25}{n}}\\\\(0.036)^2=\dfrac{0.25}{n}\\\\n=\dfrac{0.25}{0.036^2}\\\\n=192.9\\\\n=193$

Hence, the size of sample of 193 is needed.

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3 years ago

The Cubs have won

Naily [24]

First you need to figure out the games the Cubs lost. 11-7=4, so they lost 4 games.

Now you must plug in the ratio of games lost to games played. You know they lost 4 games and played 11, so the ratio would be 4:11.

I hope you find this helpful :)

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3 years ago

A company has been forced to reduce its number of employees. Today the company has 34% fewer employees than it did a year ago. I

jenyasd209 [6]

Since there are 34% fewer, you multiply 297 x 0.34 = 100.98
Then you add 100.98 to 297 = 397.98
They had 397 employees.

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alexgriva [62]

Slope: -2/3
y intercept: -1

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