All categories

4 years ago

What's the numerator for the following rational expression? X/y + 3/y= ?/y

Mathematics

1 answer:

Fittoniya [83]4 years ago

7 0

Answer:

x + 3

Step-by-step explanation:

Since we have a common denominator, we can just simply combine the numerator which is just x+3.

You might be interested in

Simplify the expression 3^7/3^5

Setler79 [48]

Answer:

Step-by-step explanation:

3 0

3 years ago

A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour,

gizmo_the_mogwai [7]

A fisherman travels downstream at full speed to his favorite fishing spot.
The stream is running at a rate of 5 miles per hour, and he takes an hour to get to the fishing hole. 
He catches 5 fish and calls it a day. 
He takes twice as long at full speed to get back to the dock going against the current. 
(x + 5)/(x - 5) = 2 
x = 15
The full speed of the fishing boat is 15 miles per hour.

5 0

3 years ago

The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds,What perc

soldier1979 [14.2K]

Answer:

57.62% of players weigh between 180 and 220 pounds

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 200, \sigma = 25$

What percent of players weigh between 180 and 220 pounds

We have to find the pvalue of Z when X = 220 subtracted by the pvalue of Z when X = 180.

X = 220

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{220 - 200}{25}$

$Z = 0.8$

$Z = 0.8$ has a pvalue of 0.7881

X = 180

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{180 - 200}{25}$

$Z = -0.8$

$Z = -0.8$ has a pvalue of 0.2119

0.7881 - 0.2119 = 0.5762

57.62% of players weigh between 180 and 220 pounds

4 0

3 years ago

Please help I'm on a quiz!A,B,C, or D Which describes the correlation shown in the scatterplot?

umka2103 [35]

Answer:

The answer to your question is C). There is no positive or negative correlation. This is because there is no specific direction of the dots. And it isn't going in a straight line, in one specific direction.

Step-by-step explanation:

Going down=Negative correlation Going up=Positive correlation.

6 0

3 years ago

Please answer it fast I’m in a exam

lions [1.4K]

Answer:

x= 0+1+2y-3

then substituting the value of x in eqn i

((0+1+2y-3 ) +3) -2y + 1 = 0

then continue ♥

3 0

3 years ago