3 years ago

What is the area of a triangle

1 answer:

7 0

The area of a triangle is 1/2 b/h. So what you do is you find base and height, multiply them together and whatever answer you got, you divide by 2.

Example:
A= 1/2 (b x h)
A= 1/2 (4 x 6)
A= 1/2 (24)
A= 12

Hope this helps!

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Solve the following system of equations algebraically:<br> Y = x^2 + 8x – 9<br> Y = 2x + 7

julia-pushkina [17]

Use simultaneous equations:
2x + 7 = x^2 + 8x - 9
7 = x^2 + 6x - 9
16 = x^2 + 6x
+ or - 4 = 7x
answer is
-4/7 or 4/7

3 0

2 years ago

Gregory knows that Triangle A B C is reflected onto Triangle A prime B prime C prime. Which statement about the figures is true?

ziro4ka [17]

Answer: if Gregory draws the segment with endpoints A and A’, then the midpoint will lie on the line of reflection.

Explanation:

Given that a triangle ABC is reflected in triangle A'B'C'

Here reflection is done on a line

If you imagine the line as a mirror then ABC will have image on the mirror line as A'B'C'

Recall that in a mirror the object and image would be equidistant from the mirror and also the line joining the image and object would be perpendicular to the mirror

But note that corresponding images will only be perpendicular bisector to the line

So A and A' only will be corresponding so AA' will have mid point on line

Option 1 is right

5 0

3 years ago

Which value of x makes the equation true? x – 5.1 = –7.6

ASHA 777 [7]

X-5.1 = -7.6
+5.1 +5.1
X= -2.5

7 0

3 years ago

Read 2 more answers

X+y=1 If x=0, then y=

Ber [7]

Answer:

Step-by-step explanation: