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2 years ago

Which of these rectangles could be the shape of her scrap book cover?

Mathematics

2 answers:

Anna007 [38]2 years ago

5 0

Answer:

The 6 by 5 rectangle

Step-by-step explanation:

It is the 6 by 5 rectangle because the text says she used 22 inches to border the cover. this means we need to look at the rectangles perimeters to find the answer. to find the perimeter of rectangles that only give you measurements for two sides you need to multiply each measurement by 2. So you need to do 6 times 2 and 5 times 2 to get 12 and 10. once you have your two numbers you add them together. 12+10=22. (remember we were looking for a recangle with a perimeter of 22 inches)

I hope this helps you out a little.

andrew11 [14]2 years ago

3 0

Answer:

6in 5in

you have to do 5×2 and 6×2 and add those together

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How to find the limit of that question

jeka94

Factor the numerator using difference of cubes:
$a^3 - b^3 = (a-b)(a^2 +ab+b^2)$
a = x
b = 2

$\frac{x^3 - 8}{x-2} = \frac{(x-2)(x^2 +2x+4)}{x-2} = x^2 +2x+4$

Now you can evaluate limit as x=2.
$\lim_{x \to 2} (x^2 +2x+4) = 2^2 +2(2)+4 = 12$

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3 years ago

Evaluate 4(a2 + 2b) - 2b when a = 2 and b = –2

amid [387]

First you simply have to substitute 2 in replace of all the a's, and -2 in replace of all of the b's

4((2)2+2(-2))

Then you want to follow the order of operations, PEMDAS (Parantheses-Exponent-Multiplication-Division-Addition-Subtraction), and multiply within the parantheses.

4(4+(-4))

Next you will add within the parantheses (So add the 4 and -4 together)

4(0)

Lastly multiply

0

Your answer is 0

Hope this helps!

5 0

3 years ago

Read 2 more answers

A figure is located at (0, 0), (−3, −4), and (−3, 0) on a coordinate plane. What kind of 3-D shape would be created if the figur

Kisachek [45]

Answer:

a cone

Step-by-step explanation:

a cone would be formed due to the point on the graph forming a triangle, and when a triangle is spun around an axis on one of its sides it will form a cone

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2 years ago

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Setler79 [48]

Answer:

diameter = 3,600 units

Step-by-step explanation:

Let $\pi$ = 3.14

C = 2 $\pi$ r

11,304 = 2(3.14)r

r = 1,800

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2 years ago

A string is cut into two pieces in the ratio 2 : 7. The difference between the lengths of the two pieces is 90cm. Find the lengt

Nataly_w [17]

Answer:the length of the shorter string= 36cm

Step-by-step explanation:

Let us assume the lengths are 2x and 7x since thery are in the ratio of 2 :7

Such that Length of the shorter string = 2x

and the longer string = 7x so that the difference in Length which is 90cm can be expressed as

7x- 2x= 90

5x= 90

x 90/5

x= 18

shorter string = 2 x = 2x 18= 36cm

Longer strring = 7x 18=126cm

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3 years ago