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3 years ago

What is the area of the triangle shown? A) 5 B) 6 C) 12 D) 30

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

4 0

The answer would be B. Area=base multiplied by the height. Turn the triangle into the square. Then you simply count the number of squares of the height to get 4. Then, count the number of squares of the base to get 3. 4 times 3 to get 12. NOW, there's one more step. Because the formula of the area of a triangle is base times height divided by 2, and since 12 is the area of the imaginary square, we have to turn it back into a triangle by dividing 12 by 2. This leads to a result of 6.

Soloha48 [4]3 years ago

3 0

The answer is 12. hope that helped

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2 years ago

If the perpendicular bisector of one side of a triangle goes through the opposite vertex, then is the triangle isosceles?

Ne4ueva [31]

Answer:

True

Step-by-step explanation:

The perpendicular bisector of the opposite side to the vertex bisects the angle at the vertex into two equal parts and also bisects the triangle into two equal parts.

Let A be the angle at the vertex, then assume that the angle is an isosceles triangle with base angles B.

We need to show that A = 180 - 2B for an isoceles triangle

The perpendicular bisector bisects A into two so the new angle in the vertex one half of the bisected triangle is A/2.

Since this half triangle is a right-angled triangle, the third angle in it is 90.

So, A/2 + B + 90 = 180 (Sum of angles in a triangle)

subtracting 90 from both sides, we have

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3 years ago

The answer to the problem

larisa86 [58]

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45000 x 0.08 = $3,600 per year.

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4 years ago

Which equation represents a circle with the same radius as

sattari [20]

Answer :

$(x+1)^2+(y-1)^2=4^2$ and $(x+1)^2+(y-1)^2=16$

Step-by-step explanation:

Given : A circle with the same radius as the circle shown but with a center at (-1.1).

To find : Which equation represents a circle ?

Solution :

The equation of a circle with center (h,k) and radius r is given by :

$(x-h)^2+(y-k)^2=r^2$

Here, we are given (h,k)=(-1,1)

and radius r=4 units

So, equation of circle will be :

$(x-(-1))^2+(y-1)^2=4^2$

$(x+1)^2+(y-1)^2=4^2$

or $(x+1)^2+(y-1)^2=16$

Therefore, the required equations of circle are

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3 years ago