your are travling 25mph to the store and 20mph back from the store total time was 9hours how long did you travel at each speed

Answers

Answer 1

Answer: distance to the store = distance from the store
Also; 9 hr = time getting there + time getting back

$(25 \ mi)/(1 \ hr)*t= (20 \ mi)/(1 \ hr) * (9 -t )$

25t = 180 - 20t
45t = 180
t = 4 hr

Since I specified that "t" was the time driven at 25 mph this is the time getting there. 9 hr - 4 hr = 5 hr is the time getting home (driving at 20 mph)

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Help me please!!!!!!!!!!!!!

Last question if ya don’t mind giving me a help

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1.55 ? not entirely sure

Combine the like terms to create an equivalent expression:
−4p+(−2)+2p+3

Answers

Answer:

-2p+1

Step-by-step explanation:

combine -4p+2p=-2p and -2+3=1 so your answer is -2p+1

A large construction company wants to review the ages of its sales representatives. A sampling of the ages of 25 sales reps are given: 50 42 32 35 41 44 24 46 31 47 36 32 30 44 22 47 31 56 28 37 49 28 42 38 45 The following histogram is a representation of the data. Calculate the median ages

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What you have to do to find the median of the data is first put that data into order numerically. You can go largest to smallest or smallest to largest, it doesn't matter.

22, 24, 28, 28, 30, 31, 31, 32, 32, 35, 36, 37, 38, 41, 42, 42, 44, 44, 45, 46, 46, 47, 47, 49, 50

Once you put them into order, you count towards the middle. You have 25 data points, so the middle, which will be your median number, will be 13 points in.

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im ading and subtracting rational expression.my question is 5 is the numerator 2x -1 is the denominator + 6x +7 and 1 -4x squared

Answers

It's my method of solving this type of account, i get the denominators and multiply them by the fractions, then you cut the denominators, any questions just ask, i don't think that it was clarifying:

(2x-1) . (1-4x^2) . (5/2x-1) + (2x-1) . (1-4x^2) . (6x/1-4x^2) =
-> (1-4x^2) . 5 + (2x-1) . 6x =
-> 5 - 20x^2 + 12x^2 - 6x =
-> -8x^2 - 6x + 5 = 0

Delta = (-6)^2 - 4.(-8).5
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x' = - (-6) + sqroot(196) / 2.(-8)
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x'' = 5/8

If college tuition last year was $3300 and this year tuition has increased to $3564 what is the percent of increase?

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college tuition and fees have increased 1,120 ... reports that the rate of increase in college costs has been “four times ... tuition at four-year public universities had increased by 15 percent between 2008 and 2010. ... “But if the costs keep on rising, especially at a time when family ...

There are 9 girls and 11 boys in a class, and two students will be chosen one after another. Find the probability that both are boys.

Answers

Answer:

11/20

Step-by-step explanation:

total=20

11=boys

9=girls

p(b)=11/20

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