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nataly862011 [7]
3 years ago
15

How to calculate the area of a triangle??

Mathematics
2 answers:
inessss [21]3 years ago
6 0

1/2 Baseb X Height.. Hope I helped.

Artemon [7]3 years ago
5 0

1/2base×height ====> is how you do this properly

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If any one answer this question i will give them brainliest
frozen [14]

Answer:

x =9

Step-by-step explanation:

-5x = -45

Divide both sides by -5:

x = 9

5 0
3 years ago
Read 2 more answers
Can i get help? Don’t really understand.
Rufina [12.5K]

First option: correct. This is because angles WOX and XOZ are supplementary, so

m\angle WOX=180^\circ-104^\circ=76^\circ

Second option: correct. By the inscribed angles theorem, we have

m\angle XWZ=m\angle XYZ=\dfrac{113^\circ}2=56.5^\circ

Angles WOX and YOZ are congruent because they form a vertical pair; they both have measure 76 degrees. This means angles WXY and WZY are also congruent, since the interior angles of any triangle sum to 180 degrees in measure. Therefore triangles WXO and YZO form a side-side-side pair, and all SSS triangles are similar.

Third option: not correct. There is a theorem (not sure what the name is) regarding intersecting chords that asserts the average of the measures of arcs WY and XZ is the same as the measure of angle XOZ. This means

\dfrac{m\widehat{WY}+113^\circ}2=104^\circ\implies m\widehat{WY}=95^\circ

Fourth option: not correct. This is because arcs WX and XZ are not "supplementary" in the sense that they do not form a semicircle and their measures do not add to 180 degrees. We know this because it's clear that point O is not the center of the circle. If it was, then angle XOZ would be a central angle and its measure would be the same as the arc XZ it subtends.

Fifth option: correct. The theorem mentioned in the assessment of the third option makes itself useful here. We have

\dfrac{m\widehat{WX}+m\widehat{YZ}}2=m\angle WOX\implies m\widehat{WX}+m\widehat{YZ}=2\cdot76^\circ=152^\circ

4 0
2 years ago
Need help asap plsss
jekas [21]

Answer:

x = 29°

y = 29°

z = 102°

Step-by-step explanation:

x and y both look even to the 29° angle across from them and z looks even to the 102° angle across from it.

4 0
2 years ago
Can someone please help me on this question.
lesya692 [45]

Answer:

Step-by-step explanation:

3x^{2} + 5x-12=0

-12=-5x-3x^{2}

(-12=-5x-3x^{2} ) * -1

\sqrt{12=5x+3x^{2}

4 0
3 years ago
State if these 3 numbers can be the measures of the sides of a triangle.
Tpy6a [65]
No since 21 as the hypotenuse will be taken and is tooooooo long... then 12cm as base and 6 as the opposite side to hypotenuse would be short in length
7 0
3 years ago
Read 2 more answers
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