3 years ago

Help URGENT!!!

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

You can spend 3.57 per square foot of carpet. You take 14*14 and then you take that number and divide 700 by it

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Cameron has $200. He wants to buy a diploma frame for $44. He also wants to buy kente graduation stoles for himself and his frie

miskamm [114]

Answer:

Step-by-step explanation:

200-44=156

156/2=6.5

Round 6.5 to 6.

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3 years ago

The length of a rectangle is 7 more than the width the area is 744 square centimeters find length and width of rectangle

andrezito [222]

Answer:

$l=31\ cm\\\\w=24\ cm$

Step-by-step explanation:

The formula that is used to calculate the area of a rectangle is:

$A=lw$

Where "l" is the lenght and "w" is the width.

You know that the area of that rectangle is:

$A=744\ cm^2$

And, according to the exercise, its lenght is 7 more than its width; then:

$l=w+7$

Then, you can make the corresponding substitution into the formula $A=lw$ :

$744=(w+7)w$

Simplify:

$744=w^2+7w\\\\w^2+7w-744=0$

Factor the equation. Find two numbers whose sum is 7 and whose product is -744. These are 31 and -24.

Then, you get:

$(w-24)(w+31)=0\\\\w_1=24\\\\w_2=-31$

The width of the rectangle is the positive value:

$w=24\ cm$

Then, the lenght is:

$l=24+7\\\\l=31\ cm$

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