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Fittoniya [83]
3 years ago
10

The area of 14 cm wide rectangle is 252 CM what is the length​

Mathematics
1 answer:
Olin [163]3 years ago
5 0

Answer: 21cm

Step-by-step explanation:

To find the area of a rectangle you just multiply the length by the width. In this case we have 12(width) x ?(length) = 252. To solve we would just divide the area by the known measurement to find the missing one, so 252/12 =21cm

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P+q=1 and pq=-20. What are the values of p and q?​
andrey2020 [161]

Answer:

Step-by-step explanation:

5, -4

5-4=1

5(-4)=-20

6 0
3 years ago
susan received a $70 gift card for a coffee store. she used it in buying some coffee that cost $7.23 per pound. after buying the
diamong [38]
Amount spent on coffee=   $70 - $48.31 = $21.69 

Coffee cost $7.23 per pound

No of pounds of coffee bought =    Amount in $ / Cost in $ per pound
                                         
                                                 = 21.69 / 7.23
                              
                                                  = 3

3 pounds of coffee was bought
7 0
3 years ago
Do these two equations represent the same line 10x+4y=-8 5x+2y=10?
AlladinOne [14]

Answer:

no

Step-by-step explanation:

no two different lines

8 0
3 years ago
A 10-pound block of ice melts at a rate of 3% per hour. Find the weight of the block of ice after 1 day.
mylen [45]

Answer:

The weight of the block of ice after 1 day is of 4.81 pounds.

Step-by-step explanation:

Equation for exponential decay:

The equation that models an amount after t hours, subject to exponential decay, is given by:

A(t) = A(0)(1 - r)^t

In which A(0) is the initial amount and r is the decay rate, as a decimal.

A 10-pound block of ice melts at a rate of 3% per hour.

This means that A(0) = 10, r = 0.03

So

A(t) = A(0)(1 - r)^t

A(t) = 10(1 - 0.03)^t

A(t) = 10(0.97)^t

Find the weight of the block of ice after 1 day.

One day has 24 hours, so this is A(24).

A(24) = 10(0.97)^{24} = 4.81

The weight of the block of ice after 1 day is of 4.81 pounds.

6 0
3 years ago
Write each percent as a fraction in simplest form. .45 1/2%​
Ann [662]
.45 is 45/100 (simplify) 9/20

1/2 is already simplest form of fraction.
7 0
4 years ago
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