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lisabon 2012 [21]
3 years ago
10

A rectangle is 3 times as wide as it is long if x=10 what's the perimeter

Mathematics
1 answer:
Alex3 years ago
5 0

Answer:

80 units if the length is equal to x (it is unspecified)

Step-by-step explanation:

Assuming that the length is equal to x, then we know that the length is 10 units long because x = 10.

Since the width is 3 times longer than the length, we can also find that the width is 30 units long because 3 x 10 = 30.

Now, we can use the perimeter formula to find the perimeter of the rectangle.

The perimeter formula is P = 2 ( L + W ), with L being length and W being width.

Let's just substitute the numbers to find perimeter.

P = 2 ( 10 + 30 )

P = 2 ( 40 )

P = 80

So, the perimeter is 80 units.

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Given A = {a, b, c}, how many subsets does A have including ∅?<br><br> 4<br> 7<br> 8
Minchanka [31]

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6 0
3 years ago
Tyler has $9.70 in dimes and quarters. The number of quarters is eight more than four times the number of dimes. How many of eac
julia-pushkina [17]

Tyler has 7 dimes and 36 quarters.

<u><em>Explanation</em></u>

Suppose, the number of dimes is x

As the number of quarters is eight more than four times the number of dimes, so the number of quarters =4x+8

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So, the equation will be....

0.10x+0.25(4x+8)=9.70\\ \\ 0.10x+1x+2=9.70\\ \\ 1.10x+2=9.70\\ \\ 1.10x= 9.70-2\\ \\ 1.10x=7.70\\ \\ x=\frac{7.70}{1.10}=7

So, the number of dimes is 7 and the number of quarters =4(7)+8=28+8=36

3 0
3 years ago
Can someone explain to me why I should have used the point (-2, 4) for this equation instead of (-7. -3)?
Lady_Fox [76]
I dont know what this could be
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2 years ago
Whats the area of a triangle with a base length of 3 units and a height of 4 units
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4 years ago
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