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3 years ago

What are the x-intercepts of the quadratic function y=x^2-x-2

Mathematics

2 answers:

Rus_ich [418]3 years ago

3 0

Answer:

(-1,0) and (2,0)

Step-by-step explanation:

Factor to get (x+1)(x-2)=0

Make at least one of the (x1+x2) equations equal 0.

-1 and -2 make them 0, so they are the x intercept.

OlgaM077 [116]3 years ago

3 0

Answer:

(-1,0) et (2,0)

Step-by-step explanation:

Facteur: (x + 1) (x-2) = 0

une des équations $(x1 + x2) = 0.$

-1 et -2 font 0, alors ils sont x

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Which would the phrase "twice the difference of a number and 5" look like as a variable expression? A) 2(x-5)

Ira Lisetskai [31]

A) 2 (x-5)
because difference means subtraction and it is twice that

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3 years ago

Read 2 more answers

THERE WAS A HALF CLASS OF WATER IN A FRACTION HOW MUCH WATER WOULD 3 PEOPLE GET?

kkurt [141]

Answer:

0.16

Step-by-step explanation:

you divide 1/2 by 3 to 0.16666666 but it would recuce to 0.16

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3 years ago

Complete the work to find the dimensions of the rectangle. x(x – 3) = 10 x2 – 3x = 10 x2 – 3x – 10 = 10 – 10 (x + 2)(x – 5) = 0

Norma-Jean [14]

Answer:

$Length =5$

$Width = 2$

Step-by-step explanation:

Given

$Length =x$

$Width = x -3$

$Area = 10$

$x(x-3) =10$

See comment for missing part of the question

Required

Complete the expression to determine the dimension of a rectangle

We have:

$x(x-3) =10$

Open bracket

$x^2 -3x = 10$

Equate to 0

$x^2 -3x - 10 =0$

Expand

$x^2 + 2x - 5x - 10 = 0$

Factorize

$x(x + 2) - 5(x + 2) = 0$

Factor out x + 2

$(x - 5)(x + 2) = 0$

Solve for x

$x - 5 = 0$ or $x + 2 = 0$

$x = 5$ or $x = -2$

The value of x cannot be negative

So:

$x = 5$

Recall that:

$Length = x$

$Width = x - 3$

So:

$Length =5$

$Width = 2$ ---- i.e. 5 - 3

6 0

2 years ago

2y=8x What is the slope intercept form, slope, and y-intercept

kaheart [24]

Y-intercept: 0
Slope: 4

Explanation
Y-intercept is the number without the x which in this case is no number so it’s 0 so that’s where the point in the y axis goes

Slope is rise over run so if the equation is 2y = 8x then we can simplify this by dividing both sides by 2 which would be y = 4x so slope is 4/x. Which is basically 4/1 because the x means over one so up 4 units and to the right once

Hope this helps

3 0

2 years ago

How to do this question plz answer

Soloha48 [4]

Answer:

(⌐■-■)

Step-by-step explanation:

Add perimeter of a quarter circle with radius 7 cm.

Hope this helps....

Have a nice day!!!!

3 0

3 years ago