4 years ago

Which of the triangles are right angles ?

Mathematics

2 answers:

guajiro [1.7K]4 years ago

5 0

Right triangles are triangles that have 1 angle that is 90 degrees

pishuonlain [190]4 years ago

3 0

Answer:

Right triangles

Step-by-step explanation:

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Tema [17]

I believe the answers you're looking for are 6 and 10

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3 years ago

OB is the bisector of AD and EC. . EO = 2x – 20 and OC = 70 – x. Solve for x.

mixas84 [53]

We know that OB bisects EC where they intersect would be at point O,
so the two lengths EO and OC must be equal.

2x - 20 = 70 - x

[adding x + 20 to each side]

2x - 20 + x + 20 = 70 - x + x + 20

[simplifying]

3x = 90

[dividing each side by 3]

x = 30 would be the answer

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3 years ago

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ella [17]

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3 years ago

What is the equation of the axis of symmetry for the parabola y equals start fraction two over three end fraction left parenthes

BabaBlast [244]

So hmm check the picture below

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7 0

4 years ago

Use the quadratic formula to solve the equation. 2x2 + 2x - 4= 0

iVinArrow [24]

Answer:

x = 1 or -2

Step-by-step explanation:

x = (-b +- √b^2 - 4ac)/2a

x = (-2 +- √4 + 32)/4

x = (-2 +- √36)/4

x = (-2 +- 6)/4

We will add for the first solution

x = ( -2 + 6)/4 -> x = 4/4 -> x = 1

And now we subtract for the second solution

x = (-2 - 6)/4 -> x = -8/4 -> x = -2

There are your answers. Hope I helped!

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3 years ago