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3 years ago

What is the factored form of 8x²-36x-20?

Mathematics

2 answers:

jarptica [38.1K]3 years ago

8 0

Answer:

(8x+4) ( x-5)

Step-by-step explanation:

Well we can't factor out the 8 and solve because if we do the -20 and -36 will be decimals.

So we do this

8 * -20 = -160

We need to find 2 number that multiplies to -160 and adds to -36

-40 and 4 fit this category

they add to -36 and multiply to -160

Now we write the equation as

8x^2 - 40x + 4x -20

(8x^2-40x) (4x-20)

8x(x-5) + 4(x-5)

(8x+4) ( x-5)

abruzzese [7]3 years ago

7 0

Answer:

(4x + 2)( 2x - 10)

Step-by-step explanation:

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The amount y (in dollars) that you earn by working x hours is represented by the equation y = 9x. A) What is the slope? B) What

marissa [1.9K]

Answer:

360 dollars

Step-by-step explanation:

Equation;

y = 9x

A) What is the slope?

The slope in an equation is the coefficient of the x variable. In this question, the slope is 9.

B) What does the slope mean? Interpret!

The slope shows the relationship between the x and y values.

This means that for every single unit change of x, y changes by 9 times.

C) How much money would you make if you worked 40 hours?

x = working hours

y = Amount

y = 9 (40) = 360 dollars

6 0

3 years ago

BRAINLIEST PLUS POINTS

vovangra [49]

Answer:

a) e(0,2)

b) 1

c) read below

d) read below

Step-by-step explanation:

Midpoint:

to calculate the midpoint e of a segment

e((x1+x2)/2, (y1+y2)/2)

so (-1+1)/2 and (3+1)/2

e(0,2)

Slope formula:

the slope of a straight line between two points is

$\frac{y_2-y_1}{x_2-x_1}$

so between e and B it's equal to (4-2)/(2-0) = 1

Condition for perpendicularity : slope(AC) = -1/slope(eB) = -1

so we calculate the slope of a straight line through A and C

(1-3)/1-(-1) = -2/2 = -1 so they are perpendicular

Area:

eB is the height of the triangle as it's perpendicular to the base, so applying the standard formula Area = (AC*eB)/2 we can find the area

6 0

3 years ago

Read 2 more answers

1.2 Exit Ticket

mestny [16]

Answer:

174

Step-by-step explanation:

Given

132, 145, 97, 112, 128, 82

Required

Estimate amount of students in an art class

This is calculated by obtaining the mean of the given data

$Mean = \frac{\sum x}{n}$

Where n is the number of observations

So; n = 6

$Mean = \frac{132+ 145+ 97+ 112+ 128+ 82}{6}$

$Mean = \frac{696}{6}$

$Mean = 174.0$

<em>Hence, the estimated number of students is 174</em>

4 0

4 years ago

During one day in a hardware store, 37 people came in and made a purchase, and 13 people looked around but didn’t purchase anyth

MA_775_DIABLO [31]

A= 37:13
B= 13:37
C=37:50
D=13:50

8 0

3 years ago

Can transformations always be applied to shapes, even if they're not in a plane?

Tatiana [17]

A translation is a transformation of the plane in which a a plane figure slides along a straight line, and changes its position without turning. Each point moves the same distance and in the same direction. Hence all points subjected to the same translation undergo the same displacement.

8 0

3 years ago