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2 years ago

Area of a rectangle with a width of 36cm and a perimeter of 80cm

Mathematics

1 answer:

grandymaker [24]2 years ago

7 0

The area would be 144cm^2.

In order to find the area, we need to know the length of the rectangle. We can find that using the perimeter formula.

2l + 2w = P

2l + 2(36) = 80

2l + 72 = 80

2l = 8

l = 4

So now that we know the length is 4, we can find the area using that formula.

A = lw

A = (4)(36)

A = 144

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How to solve (2.31*10^-6)+(5.87*10^-4)

S_A_V [24]

We want to calculate the following

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Using the properties of exponents, we have that

$10^{-6}=10^{-4}\cdot10^{-2}$

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Note that

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9 months ago

Multiply (5 + 3i)(5 − 3i) 16 + 15i 16 − 15i 16 34

Annette [7]

Answer:

(5 + 3i)(5 − 3i) = 34

Step-by-step explanation:

The multiplication of two identical binomials who have different symbol, can be solved using the factoring case of a difference of squares:

$(a-b).(a+b)=a^{2}-b^{2}$

So, in this case:

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We replace on the polynomial:

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CaHeK987 [17]

The slope of line D is also -4 because the lines are perpendicular.

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