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ad-work [718]
3 years ago
5

Angela made the trip by bus in 20 hours and the return trip by car in 16 hours. the bus traveled 8 miles per hour slower than th

e car. how many miles was the trip (one way)
Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0
Let X = speed of car
thus X-8 = speed of bus

bus trip = 20(X-8)
car trip = 16X

mileage each way is equal so

20(X-8)=16X
20X-160=16X
20X=16X+120
20X-16X=16X+160-16X
4X=160
X = 160/4 = 40 miles one way

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What is my weighted grade please explain how it's done.
salantis [7]

That's not enough information to calculate your grade from.

-- You've told us the scores you have in things that go together
to make up (35 + 5 + 25) = 65%  of your grade.

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3 years ago
Hayden is a manager at a landscaping company. He has two workers to landscape an entire park, Cody and Kaitlyn. Cody can complet
belka [17]
Answer: 3.4 h

Explanation:

1) The basis to solve this kind of problems is that the speed of working together is equal to the sum of the individual speeds.

This is: speed of doing the project together = speed of Cody working alone + speed of Kaitlyin working alone.

2) Speed of Cody

Cody can complete the project in 8 hours => 1 project / 8 h

3) Speed of Kaitlyn

Kaitlyn can complete the project in 6 houres => 1 project / 6 h

4) Speed working together:

1 / 8 + 1 / 6  = [6 + 8] / (6*8  = 14 / 48 = 7 / 24

7/24 is the velocity or working together meaning that they can complete 7 projects in 24 hours.

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7 0
3 years ago
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One of the legs of a right triangle measures 7 cm and its hypotenuse measures 12 cm.
Oksana_A [137]

Answer:

AC ≈ 9,7sm

Step-by-step explanation:

AB=7  One side of a right triangle

BC=12  Hypotenuse of a right triangle

AC=?=x  The other side of a right triangle

x²+7²=12²  

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Answer:

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Step-by-step explanation:

<u>Distributive method</u>:

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<u>Here given</u>:

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Among the option's:

<u>1st option</u> (7 + 3) (7 + 9) is wrong, changes <u>final answer</u>.

<u>2nd option</u> (7 × 30) + 9 is wrong, changes <u>final answer</u>.

3rd option 39 × 7 shows commutative property of multiplication.

<u>4th option</u> show distributive method.

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1 year ago
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I need this question need done asap​
Harlamova29_29 [7]

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