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2 years ago

Andy drove 840 miles in 12 hours. How far could he drive in 3 hours?

2 answers:

5 0

So in order to solve this problem we first have to divided
840 divided by 12 is 70
So that means that Andy drives 70 miles per hour
We need to find out how much miles Andy drives in 3 hours so we have to multiply the number of miles he drives per hour by 3
70*3=210
Therefore,Andy drives 210 miles in 3 hours

liraira [26]2 years ago

3 0

To answer this, we need to first find the rate and the multiply it by 3. 840/12 = 70 miles per hour. Then multiply it by 3. 70*3=210 miles. Another way we can do it is that we can divide 840 by 4 because 12 hours / 4 = 3 hours. 840/4 = 210 miles.

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maxonik [38]

3.7x4=14.8. 14.8 cups of sugar

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2 years ago

In a 30% off sale, the price of an item is reduced by £27.

Serggg [28]

Answer: the original cost of the item is 90$

Step-by-step explanation:

30% off of the item = 27$

27 dollar is 30% of the item

thus 27 = 0.30X

0.30X = 27

time both side by 10

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270/3 = 90

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2 years ago

A school is selling tickets for the prom. Tickets with a picture package cost $50 and tickets without the packet cost $30. If th

krek1111 [17]

Answer:

Answer

1.0/5

1 answer

2780/20 = 139 picture tickets

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Step-by-step explanation:

8 0

2 years ago

the equation y= - 5.131x2+ 31.821x - 3.333 approximates the number of people standing in line to catch a commuter train x hours

ehidna [41]

We are given function: y= $- 5.131x^2+ 31.821x - 3.333$

Where, x is the number of hours after 5a.m.

We need to approximates the number of people standing in line to catch a commuter train at 7 a.m.

From 5 a.m. to 7 a.m. total number of hours = 7-5 = 2 hours.

So, we need to plug x=2 in the given function.

Plugging x=2 in $y=- 5.131x^2+ 31.821x - 3.333$ , we get

$y=- 5.131(2)^2+ 31.821(2) - 3.333$

Let us simplify it now.

2^2= 4.

Therefore,

$y=- 5.131(4)+ 31.821(2) - 3.333$

= -20.524 + 63.642 - 3.333.

= 39.785 or 40 approximately.

Therefore, the number of people in line at 7 a.m. is approximately 40 people.

Option D.40 is correct option.

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3 years ago

1,-1 after a translation left 4 units and down 5 units

Alexxx [7]

Answer:

-3,-6? im not sure what you're asking

Step-by-step explanation:

Using the coordinate plane, if you move 4 units to the left of 1 you get -3, moving it down 5 you get -6 then plug them in to the ordered pair (x,y) so (-3,-6)

3 0

3 years ago

Andy drove 840 miles in 12 hours. How far could he drive in 3 hours?​

Andy drove 840 miles in 12 hours. How far could he drive in 3 hours?