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2 years ago

14

PLEASE HELP WILL MARK BRAINLIEST find the value of x

2 answers:

algol [13]2 years ago

8 0

I think,

the value of x is 90°

8_murik_8 [283]2 years ago

7 0

X= 50°

The sum of 3 angles in a triangle will always equal 180 degrees. So to find x in this problem you can do 180 - 82 - 48 = 50°

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Determine the correct equation for the following verbal sentence: The total distance traveled, d, at a constant speed of 45 mile

lidiya [134]

D=45h
It looks like that is option B

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2 years ago

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Two numbers have a sum of 1,212 and a difference of 518. Which system of equations could we use to solve this problem?

Sloan [31]

X+y =1212
x-y = 518
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8 0

3 years ago

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Foil: (x+9)(3x-4)

QveST [7]

QUESTION 1

The given binomial is;

$(x+9)(3x-4)$

First terms are multiplied: $x\times 3x=3x^2$

Outside terms are multiplied: $x\times -4=-4x$

Inside terms are multiplied: $9\times 3x=27x$

Last terms are Multiplied: $9\times -4=-36$

This gives us;

$=3x^2-4x+27x-36$

$=3x^2+23x-36$

QUESTION 2

We want to factor

$6r^5s+4r^4s^2-8r^2s$

The HCF is $2r^2s$

We factor to get;

$2r^2s(3r^3+2r^2s-4)$

QUESTION 3;

$x^2+x-2=0$

Split the middle term;

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

Factor

$x(x+2)-1(x+2)=0$

$(x+2)(x-1)=0$

$(x+2)=0,(x-1)=0$

$x=-2,x=1$

The solutions are;

$x=-2$ and $x=1$

These are the x-intercepts of the graph of the function

$f(x)=x^2+x-2$

3 0

3 years ago

What is the equation of the points (-3,2) (2,-1) in standard form?

Evgen [1.6K]

You can just plug in one of the points to each equation until you get an equality that is true.

I chose to use (-3,2)

1. 5x+3y=1
5(-3)+3(2)=1
(-15)+ 6 = 1
(-9) = 1 <<<(FALSE)

2. x+5y=3
(-3)+5(2)= 3
(-3)+10= 3
7=3 <<<(FALSE)

3. 3x+5y=1
3(-3) + 5(2)= 1
(-9)+10=1
1=1<<<(TRUE)

So, the correct equation is 3x+5y=1.

Make sense?

3 0

3 years ago

THIS IS URGENT I think it’s easy I’m just bad at math but I’m realllly struggling

soldi70 [24.7K]

Answer:

its a

Step-by-step explanation:

7 0

2 years ago