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ludmilkaskok [199]

3 years ago

11

The numerator of a certain fraction is four times the denominator. If 10 is added to both numerator and denominator the resultin

g fraction is equivalent to 2. What is the original fraction?

1 answer:

Ronch [10]3 years ago

7 0

20/5 4x/x adding 10 to each 4x+10/x+10 =2 Multiple x+10 to each side 4x+10=2x+20 Then subtract and get 2x=10 Divide X=5 Now plug it back in 20/5

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The equation d=10h represents the number of miles d that Jin travels in h hours . If Jon cuts down the time it takes to travel 3

ahrayia [7]

0.15 is multiplied by 10 = 1.5 hours

5 0

3 years ago

PLEASE HELP❗️❗️

Alexandra [31]

Answer:

A.irrational

Step-by-step explanation:

because 9 can be square to 3 but 11 cant be squared at all.

4 0

3 years ago

A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard

azamat

Answer:

Option C

Step-by-step explanation:

Given that for a random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = $\frac{320}{\sqrt{20} } \\=71.5542$

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= $1880+1.328*71.55\\=1975$

Option C is right

3 0

3 years ago

Just learn this throughout a quick lesson, can someone help?

suter [353]

Answer:

The Pythagorean theorem is a^2+b^2=c^2 where c is the length of the longest, diagonal side (diagonal means opposite the right angle/small square).

Step-by-step explanation:

If you're looking for a short side (i.e. next to the right angle), square the longest one and subtract the square of the other known.

If you're looking for a long side (i.e. opposite the right angle), square both you know and add them together.

In both cases, take the Square Root with your calculator, or by trial and error, find a number that squares to make your current number.

[1] A square of the number x is x times x.

6 0

3 years ago

two angles are supplementary the measure of one angle is 116 degrees what is the measure of the other angle?

Rainbow [258]

The measure of the other angle is 64 degrees bc supplementary angles add up to 180 and 116 plus 64 is 180

6 0

3 years ago

Read 2 more answers