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3 years ago

And this is the last one i need done

Mathematics

1 answer:

quester [9]3 years ago

5 0

Answer:

x=-2.5,9

Step-by-step explanation:

Set them equal to each other to say 2x^2-9x=4x+45. Get them all on one side to get 2x^2-13x-45. Factor that out to get (x+2.5)(x-9). Set that equal to 0 to get x=-2.5,9

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Find the slope of the line shown below

WITCHER [35]

Answer:

$\frac{3}{2}$

Step-by-step explanation:

From the attached photo, we can deduce:

(2,2) as (x1,y1)

(-2,-4) as (x2,y2)

Slope Formula =

$\frac{y1 - y2}{x1 - x2}$

Now we can substitute these values into the formula to find the slope.

Slope of line =

$\frac{2 - ( - 4)}{2 - ( - 2)} \\ = \frac{2 + 4}{2 + 2} \\ = \frac{6}{4} \\ = \frac{3}{2} (reduced \: to \: simplest \: form)$

5 0

2 years ago

5 less than the quotient of a number and 3 is -7

hram777 [196]

$\frac{x}{3}$ - 5 = -7 .
____________________________________________
This would be one way to write the expresion/equation; in which "x" represents the unknown number.

Now, to solve for "x" ;
____________________________________________
Given:
____________________________________________
$\frac{x}{3}$ - 5 = -7 ;

Add "5" to EACH SIDE of the equation:
_____________________________________________
$\frac{x}{3}$ - 5 + 5 = -7 + 5 ;

to get:

$\frac{x}{3}$ = -2 ;

x = (-2 * 3) ;
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x = - 6 .
_________________________________

6 0

3 years ago

What are the characteristics of the graph of the inequality x2-2?

lara [203]

Answer:

Step-by-step explanation:

×2-2 = ×2 =4 =4-2=2 as in my thoughts it is kinda appropriate

8 0

3 years ago

The mean of 8 observations is 40. If 5 is added to each observation,

r-ruslan [8.4K]

45 is the new mean. If u add 5 to each, then u will gat 40, 50, 60, and 30. Add all of the, up, and divide by 4. U get 180/4, which is 45.

7 0

3 years ago

A figure that has no end points is called a

kogti [31]

its call a line

like this ------------ it does not stop

A line segment is this (.)___(.) It has two dots so it stop

A ray is not dot (.)___

4 0

3 years ago

Read 2 more answers