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lina2011 [118]
3 years ago
14

Show that the triangle below is not a right-angled triangle.

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0

Step-by-step explanation:

A right triangle is a triangle in which one of the angles is a 90∘ angle.

(5x - 8)  + (2x - 5)  + (2x  + 3) = 180 \\ 9x - 10 = 180 \\ 9x = 190 \\ x =  \frac{190}{9}  \\ x = 21.11

(5x - 8) =97.56  \\ (2x - 5)  =37.22  \\ (2x + 3) =45.22  \\

Since None of the angels is 90° , so the triangle is not a right triangle.

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What is the length of the segment with endpoints (-3, 4) and (5, 4)? A) 2 B) 8 C) 16 D) 64 E) 2 17
Cerrena [4.2K]

Answer:

The correct answer is B) 8

Step-by-step explanation:

\sqrt{(4-4)^{2}+(5+3)^{2}   } \\\\\\\sqrt{8^{2} } \\\\8

8 0
3 years ago
Read 2 more answers
Can somebody help me with this?​
Ghella [55]

Answer:

x=11

Step-by-step explanation:

Since this is a 90º angle, 46º+(4x)º has to equal 90º, and you can make and solve an equation for this:

46+4x=90

4x=44

x=11

Check:

46+4x=90

46+4(11)=90

46+44=90

90=90

6 0
3 years ago
What should be done to x^2 + 15x in order to create a perfect square?
lana [24]

\bf \qquad \textit{perfect square trinomial} \\\\ (a\pm b)^2\implies a^2\pm \stackrel{\stackrel{\text{\small 2}\cdot \sqrt{\textit{\small a}^2}\cdot \sqrt{\textit{\small b}^2}}{\downarrow }}{2ab} + b^2 \\\\[-0.35em] ~\dotfill

\bf x^2+15x+\boxed{?}^2\implies \stackrel{\textit{we know the middle term is}}{2\sqrt{x^2}\cdot \sqrt{\boxed{?}^2}\implies 2x\boxed{?}}\qquad then\qquad 2x\boxed{?}=15x \\\\\\ \boxed{?}=\cfrac{15x}{2x}\implies \boxed{?}=\cfrac{15}{2}\qquad \impliedby \textit{we should add that much \underline{squared}} \\\\[-0.35em] ~\dotfill\\\\ x^2+15x+\left( \cfrac{15}{2} \right)^2\implies \left(x+ \cfrac{15}{2} \right)^2

5 0
3 years ago
PLEASE HELP WILL GIVE 15 POINTS
natka813 [3]

Answer:

Step-by-step explanation:

Hello, when you have an equation like y = ax+b you know that this is a line.

In this example, the function is defined in two different intervals.

For x < 1 this is the line y = 4 + x

and for x>=1 this is the line y = 4 - 2x

At the frontier, x= 1, we have 4+1=5 on one side and 4-2=2 on the other side, we we expect a "jump" in the graph.

Except that "jump"you just have to draw lines, so if you have two points you can draw them right.

For x<1, the line is passing by (-4,0) and (0,4)

And you have to stop for x<1 so the point (1,5) is not on the graph.

for x>=1 the points (1,2) and (2,0) are on the graph and we just have to draw the line.

I attached the graph.

Thanks

6 0
3 years ago
What is 765(7362*6364)+82373(3837-1253)?<br><br><br><br><br><br><br><br> heyyyyyyyyyy im bored lol
givi [52]

Answer:

36,054,454,352

Step-by-step explanation:

35,841,602,520 + 212,851,832 = 36,054,454,352

Hope that fills your boredom a bit.

4 0
3 years ago
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