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3 years ago

If a car with an average speed of 40 miles per hour drives for 45 minutes how far will it have gone

Mathematics

1 answer:

REY [17]3 years ago

3 0

Answer: $30\ miles$

Step-by-step explanation:

The average speed of the car is 40 miles per hour:

$V=40\ \frac{mi}{h}$

The car drives for 45 minutes:

$t=45\ min$

Since 1 hours has 60 minutes, we can convert the time from minutes to hours:

$(45\ min)(\frac{1\ h}{60\ min})=0.75\ h$

Knowing these values, we can use the following formula for calculate the distace "d":

$d=V*t$

Therefore, substituting values into the formula, we get:

$d=(40\ \frac{mi}{h})(0.75\ h)\\\\d=30\ mi$

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What is the domain of

ddd [48]

All real numbers is the correct answer

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3 years ago

4 bells toll together at 9 am. They toll after 7, 8. 11 and 12 seconds respectively. How many times will they toll together agai

Svetach [21]

Answer:

5 times

Step-by-step explanation:

What we need to do here is to find the lowest common multiple of 7,8,11 and 12

This is;

1848

Now, let’s calculate the number of seconds in 3 hours

In 1 hour, we have 3600 seconds

In 3 hours, this will be;

3600 * 3 = 10,800 seconds

So, to find the number of times in which all 4 will toll together, we need to know the number of 1848 seconds in 10,800 seconds

Mathematically, that will be;

10,800/1848 = 5.844

Our answer will be 5 times however

This is because the sixth time they would have sounded together would be more than the 3 hours time frame

8 0

2 years ago

David made a class banner out of a large rectangular piece of paper. He cut a

Irina18 [472]

Answer:

100 in²

Step-by-step explanation:

The area of the banner is equal to the area of the initial rectangle minus the area of the cutout triangle.

The rectangle has a height of 8 inches and width of 14 inches, so its area is:

A = (8 in) (14 in) = 112 in²

The triangle has a base of 8 inches and a height of 3 inches, so its area is:

A = ½ (8 in) (3 in) = 12 in²

So the area of the banner is 112 in² − 12 in² = 100 in².

6 0

3 years ago

A baseball player gets 7 hits in the first 15 games of the season. if he continues hitting at the same rate, how many hits will

inessss [21]

Hey there,
15 games = 7 hits
1 game = 7 / 15
= 0.46666666666
45 games = 0.46666666666 x 45
= 21

Hope this helps :))

~Top♥

3 0

3 years ago

Solve (x+y) if x=-1/2 and y=-3

bixtya [17]

Answer:

$-3\frac{1}{2}$

Step-by-step explanation:

Solve

$(x+y)$

For x=-1/2 and y=-3

substitute the value of x and the value of y in the expression above

$x+y=(-\frac{1}{2})+(-3)$

Remember that

$(+1)(-1)=-1$

$x+y=-\frac{1}{2}-3=\frac{-1-6}{2}=-\frac{7}{2}$

Convert to mixed number

$-\frac{7}{2}=-\frac{6}{2}-\frac{1}{2}=-3\frac{1}{2}$

7 0

3 years ago