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3 years ago

Can someone help me?

Mathematics

1 answer:

lianna [129]3 years ago

7 0

Answer:

(-4,-7)

Step-by-step explanation:

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How to know how to do percent of change

IgorC [24]

Work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100. If your answer is a negative number then this is a percentage decrease.

4 0

3 years ago

The time to complete a standardized exam in the BYU-Idaho Testing Center is approximately normal with a mean of 70 minutes and a

leva [86]

Answer:

Step-by-step explanation:

Given that X the time to complete a standardized exam in the BYU-Idaho Testing Center is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.

We have 68 rule as 2/3 of total would lie within 1 std deviation, and 95 rule as nearly 95% lie within 2 std deviations from the mean.

We have std deviation = 10

Hence 2 std deviations from the mean

= Mean ±2 std deviations

= $70$ ±20

= $(50,90)$

Below 50, 0.25 or 2.5% would complete the exam.

3 0

3 years ago

James delivered 3/8 of the newspaper his route in the first hour and 4/5 of the rest in the second hour. What fraction of the ne

Soloha48 [4]

Answer:

1/2

Step-by-step explanation:

Remaining fraction will be (1-3/8)=5/8

Given that in the second hour he delivered 4/5 of 5/8, then the fraction delivered in the second hour will be:

4/5 of 5/8

=4/5×5/8

=1/2

He delivered 1/2 (in fraction)

7 0

3 years ago

a digital camera cost $185 and the sales tax rate is 5.7%.what is the total cost of the camera after tax. round to the nearest c

Alchen [17]

195.55$

185x.057=10.545
10.545+185=195.55

8 0

3 years ago

Find the value of x. The diagram is not to scale.<br> 110°<br> 57°

Anika [276]

Answer:

you have to show the diagram ...

Step-by-step explanation:

4 0

4 years ago