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3 years ago

How do I find X when the triangle is a right angle?

Mathematics

1 answer:

qwelly [4]3 years ago

6 0

1:Replace the variables in the theorem with the values of the known sides.

2:Square the measures, and subtract from each side

3: find the square root of each side

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PLEASE HELP ASAP

maria [59]

Answer:

First option: $3x^2-5x=-8$

Second option: $2x^2=6x-5$

Fourth option: $-x^2-10x=34$

Step-by-step explanation:

Rewrite each equation in the form $ax^2+bx+c=0$ and then use the Discriminant formula for each equation. This is:

$D=b^2-4ac$

1) For $3x^2-5x=-8$ :

$3x^2-5x+8=0$

Then:

$D=(-5)^2-4(3)(8)=-71$

Since $D$ this equation has no real solutions, but has two complex solutions.

2) For $2x^2=6x-5$ :

$2x^2-6x+5=0$

Then:

$D=(-6)^2-4(2)(5)=-4$

Since $D$ this equation has no real solutions, but has two complex solutions.

3) For $12x=9x^2+4$ :

$9x^2-12x+4=0$

Then:

$D=(-12)^2-4(9)(4)=0$

Since $D=0$ this equation has one real solution.

4) For $-x^2-10x=34$ :

$-x^2-10x-34=0$

Then:

$D=(-10)^2-4(-1)(-34)=-36$

Since $D$ , this equation has no real solutions, but has two complex solutions.

3 0

3 years ago

I NEED HELP ASAP PLS WILL MARK BRINLIEST!!!

d1i1m1o1n [39]

Step-by-step explanation:

wait, I will look my lecture last year

5 0

2 years ago

There are 10 pencils in a desk. Ninety percent of the pencils are sharpened. Which equation can be used to find the number of sh

dezoksy [38]

Mc012-2.jpg ........................ 10/90%= 11.1111111111111

5 0

3 years ago

Have no idea how to do it

dalvyx [7]

$\bf 2)\\\\ 3+-5\implies 3+(-5)\implies 3+(-3-2)\implies ~~\begin{matrix} 3-3 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~-2\implies -2 \\\\\\ 9)\\\\ -5+(-6)\implies -5+(+5-11)\implies ~~\begin{matrix} -5+5 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~-11\implies -11 \\\\\\ 11)\\\\ 2+(-7)\implies 2+(-2-5)\implies ~~\begin{matrix} 2-2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~-5\implies -5$

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3 years ago

1 peso = $ .075. How many pesos (whole number) do you get for $100 ?

olga55 [171]

Answer:

133

Step-by-step explanation:

100/.75 = 133.33 = 133

8 0

2 years ago

Read 2 more answers