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Naddik [55]
3 years ago
8

D = r t: A train travels 300 miles on level ground in the same amount of time it travels 120 miles in the mountains. The rate of

the train in the mountains is 30 mph. Find the rate of the train on level ground and in the mountains.​
Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

The rate of the train on level ground is 75 mph, and the rate of the train in the mountains is 30 mph like you mentioned. If you were asking for the time it takes for the train to travel 120 miles in that speed in the mountain, then it would be 4 hours.

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If you roll a six sided die three times, how many possible outcomes are there?
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The Fundamental Counting Principle

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4 0
3 years ago
Your school’s band decides to sell cookie dough kits to raise money for a spring field trip. There is a Family Times Cookie Doug
nikitadnepr [17]

Answer:

 

Step-by-step explanation:

let the Cookie Dough kit be x

and  Baker’s Delight kit be y

cost of Cookie Dough kit= $7

cost of  Baker’s Delight= $15

so

x+y=220------------1

7x+15y=2100------2

solve for x and y we have

multiply eqn 1 by 7 and subtract

  7x+7y=1540---------3

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8y=560

divide both sides by 8 we have

y=560/8

y=70

put y=70 in eqn 1 we have

x+70=220

x=220-70

x=150

x=220-70

x=150

A. How many of each type of kit should your band purchase to raise the most money

Cookie Dough kit= 150

Baker’s Delight= 70

B. What is the most money that your band can raise?

Cookie Dough kit profit= selling price-cost price= 12-7= $5

Baker’s Delight profit= selling price-cost price= 25-15= $10

Amount made for Cookie Dough = 150*5=$750

Amount made for Baker’s Delight = 70*10=$700

total= 750+700= $1450

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Answer:

y = \frac{5}{3}x + \frac{8}{3}

Step-by-step explanation:

y = mx + b

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jeyben [28]

Answer:

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Pythagorean Theorem. One of the most common Pythagorean triples is 3, 4, 5 with 3 and 4 the legs and 5 the hypoenuse. That will make 9, 12, 15 anotther trible because you are tripling the side lengths. 12-9=3 so this triangle works.

8 0
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