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AfilCa [17]
4 years ago
9

A mail carrier delivered mail to 84 houses and 3 hours at what rate did the mail carrier deliver the mail?​

Mathematics
2 answers:
koban [17]4 years ago
8 0

Answer:

28 houses per hour

Step-by-step explanation:

84/3 28

alexira [117]4 years ago
6 0

the rate is 28

Step-by-step explanation:

84 divided by 3

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Expected Value (50 points)
Scilla [17]

Answer:

the expected value is if your sum is odd because half of the values you could roll are odd witch means you have 50% chance to get odd

because their are not high odds of getting something good

7 0
3 years ago
Please can someone help me with this !!!!!!!
Anvisha [2.4K]

Answer: 1 : 20%

2 : 80%

3 : -90% (negative 90%), if no negatives are allowed, than it is a 90% decrease.

4 : $90

5: $31.50

Step-by-step explanation:

4 0
4 years ago
A 450m long field is drawn to a scale 1cm to 90cm.find the lenth of drawing<br><br>​
irina1246 [14]

Answer:

500cm or 5 meters

Step-by-step explanation:

The ratio of drawing and field is 1:90.

So we have to make 450 m into cm.

450 -> is 45,000

Now we can make 2 fractions,

\frac{1}{90}=\frac{x}{45000}

Cross multiply

90*x = 90x

1*45000 = 45000

90x = 45000

Divide 90 to both sides

x = 500cm

<em>Thus,</em>

<em>the drawing's field is 500cm or 5m long.</em>

<em />

<em>Hope this helps :) </em>

5 0
3 years ago
Crude oil imports to one country from another for 2009–2013 could be approximated by the following model where t is time in year
DIA [1.3K]

Answer:

Import in 2012 was the greatest

Step-by-step explanation:

Given

l(t) = -33t² + 800t - 3000

9 ≤ t ≤ 13

Required

Determine the year with highest import.

To do this we simply substitute the values of t from 9 to 13 in the given function.

When t = 9

l(t) = -33t² + 800t - 3000

l(9) = -33 * 9² + 800 * 9 - 3000

l(9) = -33 * 81 + 800 * 9 - 3000

l(9) = -2673 + 7200 -3000

l(9) = 1527

When t = 10

l(10) = -33 * 10² + 800 * 10 - 3000

l(10) = -33 * 100 + 800 * 10 - 3000

l(10) = -3300 + 8000 - 3000

l(10) = 1700

When t = 11

l(11) = -33 * 11² + 800 * 11 - 3000

l(11) = -33 * 121 + 800 * 11 - 3000

l(11) = -3993 + 8800 - 3000

l(11) = 1807

When t = 12

l(12) = -33 * 12² + 800 * 12 - 3000

l(12) = -33 * 144 + 800 * 12 - 3000

l(12) = -4752 + 9600 - 3000

l(12) = 1848

When t = 13

l(13) = -33 * 13² + 800 * 13 - 3000

l(13) = -33 * 169 + 800 * 13 - 3000

l(13) = -5577 + 10400 - 3000

l(13) = 1823

Comparing the values of l(t) for the range of t = 9 to 13,

The highest value of l(t) is:

l(12) = 1848

Hence, the year with the highest import is 2012

6 0
4 years ago
Ricky needs 3 1/4 cups of sugar to make candy. He already has 2 1/2 cups. How many more cups of sugar does he need?
jasenka [17]
You would need to subtract the current amount from the total amount.
3 1/4 - 2 1/2
5 0
4 years ago
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