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hoa [83]
3 years ago
11

Which amount of 1 inch square pieces of chocolate would you

Mathematics
2 answers:
kherson [118]3 years ago
7 0

Step-by-step explanation:

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nexus9112 [7]3 years ago
5 0

a. Chocolate need to cover a rectangle with a length of 9 in. and a perimeter of 22 inches is 18 pieces of 1 inch square piece chocolates

b.Chocolate need to cover a rectangle with a length of 5 in. and a perimeter of 20 inches is 20 pieces of 1 inch square piece chocolates

Step-by-step explanation

a. To cover a rectangle with a length of 9 in. and a perimeter of 22 in.

perimeter = 2(length+breadth)

Breadth = 22 -9×2  = 22-18 = 4 ÷ 2 = 2 inches

Area of rectangle = 9 × 2 = 18 inches

18 pieces of  1 inch square piece  Chocolate is needed to cover the rectangle

b. To cover a rectangle with a length of 5 in. and a perimeter of     20 in.

perimeter = 2(length+breadth)

Breadth = 20 - 5 ×2  = 10 = 10 ÷ 2 = 5 inches

Area of rectangle = 5 × 5 = 20 inches

20 pieces of  1 inch square piece  Chocolate is needed to cover the rectangle

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In order to find a line perpendicular to the given one, we need it to have a slope that is the "opposite of the reciprocal" of the given slope.

"Opposite" means it would have its sign inverted (in our case from positive to negative); and "reciprocal means that instead of 5, it would be its reciprocal: \frac{1}{5}.

We can write this new line with such slope, and try to find its y-intercept (b) by using the given condition that requires it to go through the point (-5,-4) on he plane:

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