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34kurt
3 years ago
10

5. Louis has 21 coins in his pouch, how many nickels and dimes does he have if he has $1.35?

Mathematics
1 answer:
PolarNik [594]3 years ago
3 0
N + d = 21
0.5n + 0.10d = 1.35
5n + 10d = 135
d = 21-n
5n + 210 - 10n = 135
-5n = -75
n = 15
d = 6
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The width of a rectangle is 5 units less than the length. The area of the rectangle is 6 units. What is the width, in units, of
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Answer:

The width of rectangle is 1 unit.

Step-by-step explanation:

Given:

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Let the length be x and the width be x-5.

Now, to find the width we put the formula of area of rectangle:

Area = length × width

6= x\times (x-5)

6=x^{2}-5x

0=x^{2}-5x-6

0=x^{2}-6x+x-6

0=x(x-6)+1(x-6)

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<em>On solving equation we get:</em>

x-6=0, x+1=0

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x=6

So, the width of rectangle:

Width = x-5

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Therefore, the width of rectangle is 1 unit.

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3 years ago
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Yuliya22 [10]

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