100 PTS PLEASE HELP ME!! I NEED IT FAST!!!! (Thank you)

Mathematics

1 answer:

just olya [345]3 years ago

4 0

Answer:

1. c.15

2. a.-12

lines mean absolute value. (never negative unless the negative signs on the outside of the lines)

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Last year, James earned £1,300 per month.

mrs_skeptik [129]

Answer:

1300/100 X 105 = 1365

1365/4 = 341.25 per week

341.25/40= 8.53125

$8.53

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3 years ago

Using the z table, find the critical value for a=0.024 in a left tailed test

natita [175]

Answer:

Critical value is -1.98.

Step-by-step explanation:

Given:

The value of alpha is, $\alpha=0.024$

Now, in order to find the critical value, we need to subtract alpha from 1 and then look at the z-score table to find the respective 'z' value for the above result.

The probability of critical value is given as:

$P(critical)=1-\alpha=1-0.024=0.976$

So, from the z-score table, the value of z-score for probability 0.976 is 1.98.

Now, in a left tailed test, we multiply the z value by negative 1 to arrive at the final answer. We do so because the area to the left of mean in a normal distribution curve is negative.

So, the z-score for critical value 0.024 in a left tailed test is -1.98.

7 0

4 years ago

Please help!!!!!!!!!!!!!!!!!!!!!!!!

brilliants [131]

Answer: P=47 inches

Step-by-step explanation:

First, you have to find the other side lengths. Two of the sides are equal to 20 because this is a rectangle. The first blank would be 20 because 20 times the other side length is equal to 70. Then you would divide 70 by 20 which would equal x. x would equal 3.5 in. Then the perimeter would be:

2(20)+2(3.5)=P

P=47 inches

7 0

3 years ago

The new cylinder can has radius of 5cm and a height of 9cm how many square centimeters of aluminum will it take to make this new

m_a_m_a [10]

Answer: $282.85\ cm^2$