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3 years ago

Solve: Ax - By = C for X ( 9th grade Algebra 1)

Mathematics

1 answer:

inna [77]3 years ago

8 0

$\large \mathfrak{Solution : }$

$Ax - By = C$

$Ax = C + By$

$x = \dfrac{By +C}{A}$

Therefore, the correct Answer is 4th

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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.

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3 years ago

HELP ME PLEASE!!!!!!

makvit [3.9K]

A) (0,0) and (3,1)

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Slope is 1/3

the slope represents the relationship between x and y

b) (6,2) and (-3,-1)

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Slope is 1/3

c) yes, the two triangles represent the same slope as all of the four points used are collinear (on the same line), making all the slopes equal.

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luda_lava [24]

Is this what you looking for??

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In the diagram shown, chords AB and CD intersect at E.

frez [133]

Check the picture below.

$4x~~ = ~~\cfrac{120~~ + ~~2x}{2}\implies 8x=120+2x\implies 6x=120 \implies x=\cfrac{120}{6} \\\\\\ x=20~\hfill \stackrel{\measuredangle 4x}{4(20)=80^o}~\hfill \underset{180~~ - ~~4x}{\stackrel{\measuredangle AED}{180^o-80^o=100^o}}$

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2 years ago

What is the area of a regular heptagon that has 4 inch sides and an apothem of 4.2 inches?

Lelu [443]

A = (1/2) * apothem * pperimeter
A = (1/2) * 4.2 * (4 * 7)
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3 years ago