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3 years ago

Which description does not guarantee that a quadrilateral is a square?

Mathematics

2 answers:

yawa3891 [41]3 years ago

7 0

If it doesn't have 4 sides it is not a square

DerKrebs [107]3 years ago

3 0

If it does not have four sides that are equal then it is not a square or

if it does not have four right angles then it is not a square

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Hunter and Brian are creating a poster for a project and they need to combine two different size boards to create their project.

shepuryov [24]

Answer:

<em>The maximum area of the second board must be $(5x^2+3x-6)$ square inches.</em>

Step-by-step explanation:

The total area of two different size boards cannot exceed $(7x^2-6x+2)$ square inches.

The area of one board is $(2x^2-9x+8)$ square inches.

Suppose, the area of the second board is $y$ square inches.

That means......

$y+(2x^2-9x+8)\leq 7x^2-6x+2\\ \\ y\leq (7x^2-6x+2)-(2x^2-9x+8)\\ \\y \leq 7x^2-6x+2-2x^2+9x-8\\ \\ y\leq 5x^2+3x-6$

So, the maximum area of the second board must be $(5x^2+3x-6)$ square inches.

7 0

3 years ago

Read 2 more answers

A circular pool with a 10 foot diameter is surrounded by a deck. What is the area of the deck which surrounds the pool? use 3.14

zavuch27 [327]

Answer:

146.5 sq. feet.

Step-by-step explanation:

Area of the deck = Large Square (with 15 ft side) - Circular Pool (with radius 10/2=5)

Large Square area = $s^2=(15)^2=225$

Circular Pool area = $\pi r^2=\pi (5)^2=\pi (25)\\=25(3.14)\\=78.5$

Thus, area of deck surrounding pool = $225-78.5=146.5$ sq. feet

7 0

3 years ago

Read 2 more answers

X(x – 4) and x2 - 4x define the same function.

ycow [4]

Answer:

Yes, because $x(x -4)$ is equivalent to $x^2-4x$

Step-by-step explanation:

$x(x -4)$ and $x^2-4x$

$x(x -4) = x^2 - 4x$

Hope this helps!

5 0

2 years ago

The school bookstore ordered three-ring notebooks. They put 75% of the order in the warehouse and sold 0% of the rest in the fir

vladimir2022 [97]

Answer:

Step-by-step explanation:

100% divided by 4 is 25%

25 books were 1/4 of the books total.

the other 3/4 would be 75%

they og ordered 100 books

7 0

2 years ago

Factor completely, 9x4 -225y8

Furkat [3]

Step-by-step explanation:

$9x4 -225y8 \\ = 3 \times 3 \times x \times 2 \times 2 -3 \times 5 \times 3 \times 5 \times y \times 2 \times 2 \times 2$

4 0

3 years ago