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3 years ago

What is a quadrilateral?

Mathematics

2 answers:

goblinko [34]3 years ago

6 0

A 4 side shape with sides congruent

frutty [35]3 years ago

5 0

A quadrilateral is a 2-D four-sided figure that has straight lines.

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To increase an amount by 22%, multiply by?

madam [21]

Multiply by .22 then add that answer to what you multiplied. For example, you need to increase 100 by 22%. 100 × .22 = 22. 100 + 22 = 122

6 0

3 years ago

A rectangle is 6yards longer than it is wide. Find the dimensions of the rectangle if it’s area is 187 square yards

emmasim [6.3K]

Answer:

Width = 11 yards

Length = 17 yards

Step-by-step explanation:

First of all, the length of the rectangle is 6 yards longer than the width, this means, length = width + 6 yards. This dimensions can be represented on figure 1, where w is width, and l, for length.

We know the area of a rectangle is A = width x length

For our case 187 = w . (w + 6)

Using the Distributive Property for the multiplication we obtain

$187 = w^{2} +6w$

$w^{2} +6w-187 =0,$

Using the quadratic formula $w=\frac{-b\±\sqrt{b^{2}-4ac } }{2a}$ where a = 1, b = 6, c = - 187 and replacing into the formula, we will have:

$w=\frac{-6\±\sqrt{6^2-4(1)(-187)} }{2(1)}$

$w=\frac{-6\±\sqrt{36+748} }{2}=\frac{-6\±\sqrt{784} }{2}=\frac{-6\±28}{2}$

We have two options: $w=\frac{-6+28}{2}=\frac{22}{2}=11 yards$

$w=\frac{-6-28}{2}=\frac{-34}{2}=-17 yards$ But a distance (width) can not be negative so, this answer for w must be discarded.

The answer must be width = 11 yards.

To find the length $l =\frac{187}{11}=17 yards$

6 0

3 years ago

What is the number "n" if 7 less than 4 times n is 9

kondor19780726 [428]

4n-7=9
4n= 9+7
4n= 16
n= 16/4

N= 4

8 0

3 years ago

When is my dad coming back from the store with milk?

joja [24]

Answer:

Don't know, it's one of the worlds greatest mysteries.

I know that much cause I waiting for mine to come back too!

Step-by-step explanation:

5 0

3 years ago

The length of a rectangle is x. The width of the rectangle is (x + 10). Write an expression for the area of the rectangle.

Fed [463]

Answer:

$A=x^2+10x$

Step-by-step explanation:

Area of a Rectangle

Given a rectangle of width W and length L, its area can be calculated with the formula:

A = WL

We are given the length of a rectangle is L=x and the width is W=x+10, thus the area is:

$A=x(x+10)$

Multiplying:

$\mathbf{A=x^2+10x}$

8 0

3 years ago