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eduard
3 years ago
8

Help plz i need help k

Mathematics
1 answer:
irga5000 [103]3 years ago
3 0
What do you need help with?
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2 cars are 700 miles apart. They travel toward each other. One of the cars travels at 75mph, the other travels at 100 mph. How l
olga2289 [7]

Answer: C 4

Step-by-step explanation:

Use the formula: distance = rate x time

We can say that train 1 travels a distance of x, and train 2 travels a distance of 700 - x

The rate of train 1 is 75 mph, and the rate of train 2 is 100 mph

The time traveled for the two trains will be the same. We can represent that with the variable t.

We have the following equation for train 1:

x = 75t

For train 2, we have this equation:

700 - x = 100t

Use the Substitution Method by replacing x in the equation for train 2 with the value 75t.

700 - 75t = 100t

700 = 175t

700/175 = 4 hours.

It will take 4 hours for the two trains to meet.

6 0
3 years ago
The length of a side of a square is √7 cm. What is the perimeter of the square? (Perimeter = the distance around the outside of
Sonja [21]
Since the square has 4 sides, you only have to add \sqrt{7} four times.

The <span>perimeter of the square is: </span><span>4 \cdot \sqrt{7} = 10.6 cm </span>
4 0
3 years ago
Read 2 more answers
2.
Jet001 [13]

Answer:

119.2

Step-by-step explanation:

Given the following :

Mean (m) = 100 years

Standard deviation (sd) = 15 years

closest to the age of a Galápagos Islands giant tortoise at the 90th percentile of the

distribution?

Obtain the Zscore for 90th percentile (0.90) on the z table = 1.28

Zscore = (X - mean) / standard deviation

1.28 = (X - 100) / 15

1.28 × 15 = X - 100

19.2 = X - 100

19.2 + 100 = X

X = 119.2

3 0
3 years ago
Steve has overdrawn his checking account by 27$. His bank account charged him 15$ for an overdraft fee. Then he quickly deposite
Oxana [17]
112. Subtract the fee and add the deposit
4 0
3 years ago
Lita has a coin with heads on one side and tails on the other side. She is going to flip it in the air three times. What is the
nevsk [136]

Answer:

Its a 50 percent chance

Step-by-step explanation:

The reason is because there are only two options, and i believe it is a independent

3 0
3 years ago
Read 2 more answers
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