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3 years ago

What is the difference of r+2/r+4 and 3/r+1?

1 answer:

8 0

I assume you mean:

(r+2)/(r+4)-3/(r+1) we need a common denominator of (r+1)(r+4)

[(r+2)(r+1)-3(r+4)]/(r^2+5r+4)

(r^2+3r+2-3r-12)/(r^2+5r+4)

(r^2-10)/(r^2+5r+4)

now you could factor out the answer if you wanted to...

((r+√10)(r-√10))/((r+1)(r+4))

You might be interested in

What is the greatest decimal in hundredths that can be rounded to 14.5? What is the least

olga55 [171]

Answer:

14.45 and 14.54

Step-by-step explanation:

Rule for rounding:

Round up if number is between 5 and 9
Round down if number is between 0 and 4

What numbers in hundredths can be rounded to 14.5?

14.45 to 14.49

and

14.50 to 14.54

From above we see that:

The greatest decimal is 14.54
The least decimal is 14.45

7 0

3 years ago

True or false: the basic rate can be calculated by dividing the basic wage by the hours worked?

kati45 [8]

Answer

true

Step-by-step explanation:

Divide the total earnings for the workweek, including earnings during overtime hours,

4 0

2 years ago

Read 2 more answers

A well respected wild life researcher recently conducted a

Marina CMI [18]

Answer:

Claim : men weigh of wild jackalopes is 69.9

The null hypothesis : H0 : μ = 69.9

Alternative hypothesis : H1 : μ ≠ 69.9

Test statistic = −2.447085

P value = 0.0174

Conclusion :

Fail to Reject the Null hypothesis

Step-by-step explanation:

From the question given :

The claim is that : mean weight of wild jackalopes is still the same as 10 years with a mean weight of 69.9 lbs.

The null hypothesis : H0 : μ = 69.9

Alternative hypothesis : H1 : μ ≠ 69.9

Using calculator :

Sample mean (x) = 66

Sample standard deviation (s) = 12.345

The test statistic t :

(x - μ) / (s/√n)

n = sample size = 60

(66 - 69.9) / (12.345 / √60)

t = −2.447085

P value at α 0.01, df = 59 is 0.0174

Since the p value is > 0.01, the result is not significant at 0.01. Therefore, we fail to reject the Null

7 0

3 years ago

A picture frame has a perimeter of 40 inches. Its length is 2 inches greater than one-half its width. Let w represent the width

LUCKY_DIMON [66]

L = 2 + .5W
2L + 2W = 40

SOLVING (if needed)
Substitute 2 + .5w in for l in the second equation and solve for w.
2(2 + .5w) + 2w = 40
4 + w + 2w = 40
Combine like terms and subtract 4 from both sides
3w = 36
Divide both sides by 3
w = 12 in.
l = 2 + .5w
l = 2 + .5(12)
l = 8 in.

8 0

3 years ago

Read 2 more answers

If you want to construct a circle that touched each of the corners of a triangle, what should you construct?

son4ous [18]

Answer:

Perpendicular bisectors.

Step-by-step explanation:

This is called a circumscribed circle.

First you construct the perpendicular bisector of one side, then repeat with a second side. Where these lines cross is the center of the circle.

5 0

3 years ago