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natta225 [31]
3 years ago
12

How do you find the base of a triangle if you know the height and the area?

Mathematics
2 answers:
Charra [1.4K]3 years ago
5 0
Well, first you have to work backward. You multiply by 2 from the area: 42*2 = 84. Now you divide 84 by 6 to get 14. That number is your missing base. To check if you are correct: 6*14 = 84/2 = 42.

Hope this helps,
Loafly
bogdanovich [222]3 years ago
4 0
If 42 is the area and the formula is bh1/2 then 42 times 2 = 6x to sold x we do 84 divided by 6 and x= 14 the height of the triangle.is 14
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The answer is below

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2 years ago
What are the coordinates of the vertex of the parabola y=x^2+2x-1
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3 0
2 years ago
Please help, I don’t understand how to get this please explain. Ill give brianliest.
Ulleksa [173]

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D 22.5CM

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7 0
2 years ago
Read 2 more answers
If arc EF = 151°, find mEDF.
user100 [1]
There is a theorem that says that this angle (formed by thre points on the circumference) is half such arc called EF.

We can deduct it as well.

1) Call O the center of the circle. The central angle (EOF) = arc EF = 151°

2) Draw a chord from F to D and other chord from D to E.

You have constructed two triangles, FOD and DOE.

3) Triangle FOD has two sides equals (because both are the radius of the circcle). Then, this is an isosceles triangle and it has two angles of the same measure. Call this measure a.

4) Triangle DOE is also isosceles, for the same reason explained in the poiint 3. Call the measure of its equal angles b.

5) The sum of the angles of the two triangles is 180° + 180 ° = 360°.

This is a + a + b + b + (360 - central angle) = 360°

=> 2a + 2b = central angle
=> 2(a+b) = cantral angle
=> (a+b) = central angle / 2 = 151° / 2 =71.5°

(a+b) is the angle that you are looking for.

Then the answer is 71.5°

 
4 0
3 years ago
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