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kvv77 [185]
2 years ago
12

Two trains leave towns 474 kilometers apart at the same time and travel toward each other. One train travels13 km/m faster than

the other. If they meet in 2 hours, what is the rate of each train?
Mathematics
1 answer:
guajiro [1.7K]2 years ago
3 0

Answer:

112 km/h

125 km/hr

Step-by-step explanation:

Distance = time * speed

Distance  = distance train 1 + distance train 2

474 = 2(s) + 2(s + 13)

Distribute

474 = 2s + 2s + 26

Combine like terms

474 = 4s + 26

Subtract 26 from both sides

448 = 4s

Divide both sides by 4

112 = s

s = 112 km/h

s + 13 = 125 km/hr

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Answer:

92

Step-by-step explanation:

6 0
3 years ago
It's geometry please help.
oksano4ka [1.4K]

Answer:

BC = 22

Step-by-step explanation:

BD = 67

Bc = 3x - 2

CD = 4x + 13

BC + CD = BD (Given)

3x - 2 + 4x + 13 = 67

3x + 4x -2 + 13 = 67

7x + 11 = 67

7x = 67 - 11

7x = 56

x = 56 ÷ 7

x = 8

now instead of x put 8

Bc = 3x - 2

BC = 3(8) -2

BC = 24 -2

BC = 22

4 0
3 years ago
(a) Count the number of ways to select a sample of 3 people to serve on a board of directors from a population of 6 people______
ValentinkaMS [17]

Answer:

(a) 20 ways

(b) 0.05 or 5%

Step-by-step explanation:

(a) Assuming that the order in which people are chosen does not matter, the number of ways to select 3 people out of possible 6 is given by the following combination.

n=\frac{6!}{(6-3)!3!}=\frac{6*5*4}{3*2*1}=20\ ways

(b) In a random sampling procedure, every outcome is just as likely to occur. Therefore, the chances that any particular sample will be the one selected are:

C = \frac{1}{20}=0.05 = 5\%

8 0
3 years ago
a baseball team has home games on Thursday and Saturday. the two teams together earn $4746.50 for the team. Thursdays game gener
baherus [9]
Saturday: Earned 2,426.75
Thursday: Earned 2,319.75

For a total of 4746.50
6 0
3 years ago
it's sixth grade math I'm sorry for the words that are cut off you'll be able to figure out what they are i dont have a better p
alekssr [168]

8x6=48 min

Hope I helped!

7 0
2 years ago
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