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3 years ago

Why is a ray a defined term

Mathematics

1 answer:

castortr0y [4]3 years ago

3 0

Because it has no width or depth.

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Solve: 6/x + 23 = 1/y for y.

iris [78.8K]

Answer:

$\frac{y}{x} = \frac{6y {}^{2} }{x {}^{2} }$

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3 years ago

What is the distance between the points (2,3) and (5,-4)

sammy [17]

It would be 7.6

Hope this helps

Have a great day/night

5 0

3 years ago

Mary is using a one-sample t-test on the following group:Subject #15: 7.5 hoursSubject #27: 6 hoursSubject #48: 7 hoursSubject #

elena-14-01-66 [18.8K]

Based on the information given, the correct options will be:

a.) Mary would use the sample standard deviation to calculate a t-statistic.

c.) The value for the degrees of freedom for Mary's sample population is six.

One-sample t-test simply means a statistical hypothesis test that's used for the determination of whether an unknown population mean will be different from the specific value.

In this case, the value of the degree of freedom for the sample will be:

= (n - 1) = 7 - 1 = 6.

Also, it should be noted that Mary would use the sample standard deviation to calculate a t-statistic.

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6 0

2 years ago

If you solve this you are a genius.... Mr.SMITH had 4 daughters , each daughter had a brother... How many children does Mr. Smit

posledela

Answer:

He has 5 children

Step-by-step explanation:One boy is a brother to all of them

7 0

2 years ago

The area of a circle is 47.39cm2. find the length of the radius rounded to 2 dp.

Tpy6a [65]

The length of the radius rounded to 2 decimal points is 3.88cm.

In geometry, the area enclosed by a circle of radius r is pie π $r^2$ .

How to round decimals?

Rounding decimals consists of rounding a decimal number to a certain number of decimal places, to save time and help us express really long numbers in shorter terms. There are certain rules to follow when rounding a decimal number. Put simply, if the last digit is less than 5, round the previous digit down. However, if it’s 5 or more than you should round the previous digit up. So, if the number you are about to round is followed by 5, 6, 7, 8, 9 round the number up. And if it is followed by 0, 1, 2, 3, 4 round the number down.

The area of circle is $47.39cm^2$ .

Putting it in the formula we get

$47.39cm^2$ = π $r^2$

$r^2$ = 47.39 / π

r^2 = 15.0847

r = 3.88 cm

Hence the length of the radius rounded to 2 decimal points is 3.88cm.

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2 years ago