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just olya [345]
3 years ago
8

A car travels 210 miles in 4 hours. Use dimensional analysis to convert the car’s speed to feet per minute?

Mathematics
2 answers:
Anna35 [415]3 years ago
5 0

Answer:

4620 feet per minute

Step-by-step explanation:

210m/ 4h ( 1h/ 60 min) (5280ft/ 1m)

1108800ft/240 min

= 4620 feet per minute

Finger [1]3 years ago
3 0

Answer:

eight hundred an fourty

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A worker get paid overtime at the rate of double normal time. For a week he works 40 hours of normal time and 8 hours of overtim
ivolga24 [154]

Answer:

His hourly wage is $17.50

His normal wage would be $700 evenly.

6 0
2 years ago
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A total of 20 quarters and nickels add up to $4.00. How many nickels are there?
mariarad [96]

Answer:

5 nickels

Step-by-step explanation:

You can setup and solve a system of equations, or you can solve by trial and error until you get the correct answer.

Here is the solution by trial and error.

If all 20 coins are quarters, the value is 20 * $0.25 = $5

That is too much value.

Let's try 16 quarters. 16 quarters are worth 16 * $0.25 = $4.

That is the correct value, but it is only with quarters, and only 16 of them.

We need fewer quarters than 16.

Try 12 quarters: 12 * $0.25 = $3.00

The number of nickels is: 20 - 12 = 8

8 nickels are worth 8 * $0.05 = $0.40

12 quarters and 8 nickels are worth $3.00 + $0.40 = $3.40

There are 20 coins, but the value is too low.

The number of quarters is between 12 and 16.

Try 14 quarters and 6 nickels:

14 * $0.25 + 6 * $0.05 = $3.50 + $0.30 = $3.80

We are closer to $4 but not there yet.

Try 15 quarters and 5 nickels.

15 * $0.25 + 5 * $0.05 = $3.75 + $0.25 = $4

The total value is $4 and there are 20 coins. This is the answer.

15 quarters and 5 nickels works.

Answer: 5 nickels

8 0
3 years ago
How to find the maximum height projectile motion?
ziro4ka [17]
Y=v(initial)*t+1/2at^2
since the velocity is zero at the maximum height then we get
y=1/2at^2
a is just acceleration due to gravity so a=g which is 9.8 m/s^2.
so y=1/2gt^2.
7 0
3 years ago
-17 = x/-3 for x. thanks for helping
vekshin1

Answer:

-17 = x/-3 for x.

Step-by-step explanation:

3 0
2 years ago
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ASAP math help algebra plzzz
skelet666 [1.2K]
This is a geometric sequence because each term is a constant multiple, called the common ratio, of the previous term.  In this case the common ratio, noted as "r", is:

8/-2=-32/8=128/-32=r=-4

The first term is -2

Any geometric sequence can be expressed as:

a(n)=ar^(n-1), a=initial term, r=common ratio, n=term number.

Since we know r and a for this problem already we can say:

a(n)=-2(-4)^(n-1)
6 0
3 years ago
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