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3 years ago

Can someone please help me with this 7th grade math homework

Mathematics

1 answer:

enot [183]3 years ago

6 0

Answer:

Step-by-step explanation:

i honestly dont even knw but i hope u get it right

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6. Find the equation of the line perpendicular to y=2 through (1,5). * A. y 2 B.X D.X=2 耕

Maru [420]

Answer:

Step-by-step explanation:

To convert the measurements of metric system into another units of metric system we have to either multiply it by 10, 100, 1000, 10000, 100000, etc or divide by 10, 100, 1000, 10000, 100000, etc.

If we have to convert bigger unit into smaller unit then we have to multiply the unit by the multiples of 10, then the decimal point is shifted to right by 1 or 2 or 3 or 4 , etc. places.

For example, 1.2 kg is converted into g so we have to multiply it by 1000, so decimal point is shifted to right by 3 places, i.e.,

1.2 x 1000 = 1200 g

If we have to convert smaller unit into bigger unit then we have to divide the unit by the multiples of 10, then the decimal point is shifted to left by 1 or 2 or 3 or 4 , etc. places.

For example, 12 cm is converted into m so we have to divide it by 100, so decimal point is shifted to left by 2 places, i.e.,

12 / 100 = 0.12 m

7 0

3 years ago

the price of a lamp is $18.50 cents the sales tax is 4% which is the total price including the sales tax?

Semenov [28]

Answer:

The answer is $19.24

Step-by-step explanation:

$18.50/100

0.185 = 1%

0.185 x 4 = 0.74

18.50 + 0.74 = $19.24

7 0

3 years ago

a group of 25 sixth graders, 40% of them said they had never visited another state. How many students said they had never visite

diamong [38]

Correct Answer: 10 students have never visited another state
40/100 × 25 =
40 is out of 100 because percentages always is represented by 100 (cent)

cross out the zero's equally top and bottom
so it would become: 4/100 × 25 = 4 ×25 = 100
then add the denominator
100/10 is our final resolution

cross out the zeros evenly and answer will give you 10.

6 0

3 years ago

Read 2 more answers

The mean number of hours of flying time for pilots at Continental Airlines is 49 hours per month. Assume that this mean was base

Effectus [21]

Answer:

a) 17.09 hours

b) The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

Step-by-step explanation:

We have the standard deviation of the sample, so we use the t distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 49 - 1 = 48

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 48 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2.0106

The margin of error is:

M = T*s = 2.0106*8.5 = 17.09

s is the standard deviation of the sample. 17.09 hours is the answer for a.

The lower end of the interval is the sample mean subtracted by M. So it is 49 - 17.09 = 31.91 hours

The upper end of the interval is the sample mean added to M. So it is 49 + 17.09 = 66.09 hours

The 95% confidence interval estimate of the population mean flying time for the Pilots is between 31.91 hours and 66.09 hours

8 0

3 years ago

Compute:<br> 3^(log3 16) - 5^(log5 11)

Nataliya [291]

Answer:

I feel bad for you

Step-by-step explanation:

sorry.....

3 0

2 years ago