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3 years ago

HELP!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Gnesinka [82]3 years ago

7 0

Answer:

Step-by-step explanation: set the two equations equal to each other. 5-2x=-4x+9 and you'd get x=2. insert 2 into the expression, and you'd get 1. to find the perimeter, a triangle has 3 sides. 1+1+1 =3

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Which of the following is the area of a quadrilateral with vertices at (-4,2),(1,2),(1,-3) and (-4,-3)

kow [346]

Answer:

The correct option is B.

Step-by-step explanation:

The given vertices are (-4,2),(1,2),(1,-3) and (-4,-3).

Plot these point on a coordinate plate. From the graph it is noticed that the given quadrilateral is a square.

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Use distance formula to find the side length.

$AB=\sqrt{(1-(-4))^2+(2-2)^2}=\sqrt{5^2}=5$

$BC=\sqrt{(1-1)^2+(-3-2)^2}=\sqrt{(25}=5$

Since both consecutive sides are equal therefore it is a square.

Area of a square is

$A=a^2$

Where, a is side length.

The side length of the square is 5. So, area of ABCD is

$A=(5)^2$

$A=25$

Therefore the area of quadrilateral is 25 units square. Option B is correct.

3 0

3 years ago

A triangle has side lengths of 10 ,24and 30 what type of triangle is it

Nata [24]

Answer:

It is scalene

Step-by-step explanation:

Because scalene triangles have no equal side lengths

6 0

3 years ago

Please help me!!!!!!

anastassius [24]

The answer is A

Step-by-step explanation:

hope it helps!!

3 0

2 years ago

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How to make 5/6 into a percent

vekshin1

"Percent" or "%" means "out of 100" or "per 100", Therefore x% can be written as
x
100
.
Therefore we can write an equation as and solve for
x
:
x
100
=
5
6
100
×
x
100
=
100
×
5
6
100
×
x
100
=
500
6
x
=
83
.
¯
3
5
6
=
83
.
¯
3
%
or
83
1
3
%

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3 years ago

Find the GCF of 170 anf 210.

vfiekz [6]

The gcf of 170 and 210 is 10.

4 0

3 years ago

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