Verify this triangle is a right triangle: a = 12 b = 7 C = 15

Mathematics

2 answers:

lora16 [44]3 years ago

7 0

Answer:

Step-by-step explanation:

Formula is a squared + b squared = c squared

12 times 12 = 144

7 times 7 = 49

144 + 49 = 193

so 15 times 15 should = 193

but 15 times 15 = 225

insens350 [35]3 years ago

3 0

Answer:

This triangle is not a right triangle

Step-by-step explanation:

If it were a right triangle, then the pythagorean theorum would work

a^2 + b^2 = c^2

12^2 + 7^2 = 15^2

144 + 49 = 225

This is not true because 144+49=193, not 225

So this triangle is not a right triangle

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The measures of the angles of a triangle are shown in the figure below. solve for x

Vlad1618 [11]

Answer:

67 degrees

Step-by-step explanation:

All angles in a triangle add up to 180 degrees. So...

23 + x + 90 = 180

113 + x = 180

x = 67 degrees

8 0

3 years ago

How do you find the area of this composite figure?

Yanka [14]

Split the shape into smaller shapes, (see attachment)
find the area of the split shapes. So first find the area of the triangles
A = 1/2bh
A = 1/2*2*3
A = 1/2*6
A = 3
so that is the area of one triangle. the area of the other is
A = 1/2*4*3
A = 1/2 * 12
A = 6
now find the area of the rectangle
A = l*w
A = 9*3
A = 27
add them all together
27 + 6+ 3 = 36
the area of the total figure is 36