Does the parabola open up or down? Is the y-coordinate of the vertex a minimum value or a maximum value?f(x) = 5x^2-x

Answers

Answer 1

Answer:

it opens up and the y coordinate of the vertex is a minimum value!

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What is the product of (x + 3)(2x – 1)

Answers

Answer:

The product of $(x + 3)(2x -1)=2x^2+5x-3$

Step-by-step explanation:

Given : Two expressions (x + 3) and (2x – 1)

We have to find the product of given expression that is $(x + 3)(2x -1)$

Consider the given expression $(x + 3)(2x -1)$

Multiply each term of first bracket with each term of second bracket

$\left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

we have,

$=x\cdot \:2x+x\left(-1\right)+3\cdot \:2x+3\left(-1\right)$

Simplify, $-(-a)=+a$

we have $=2xx-1\cdot \:x+3\cdot \:2x-3\cdot \:1$

Simplify, we get,

$=2x^2-x+6x-3$

Adding like terms, we have,

$=2x^2+5x-3$

Thus, the product of $(x + 3)(2x -1)=2x^2+5x-3$

Umm
(X+3)(2x-1)
=2x square -x + 6x - 3
=2x square +5x -3

One question is all I need help on.

Answers

Hello,

y=x²+2x
y=3x+20

==>x²+2x=3x+20
==>x²+2x-3x-20=0
==>x²-x-20=0
==>x²-2*1/2*x+1/4-20-1/4=0
==>(x-1/2)²-81/4=0
==>(x-1/2-9/2)(x-1/2+9/2)=0
==>(x-5)(x+4)=0
==>(x=5 and y= 35 ) or (x=-4 and y=-8)

−0.2x=1.6

Help a brother out

Answers

Answer:

I getcha

Step-by-step explanation:

-8

I hope this is correct

the population of masterton was 23 000 in 2012. Assume that Masterton population increases at a rate of 2% per year. Write an equation to model the population of masterton (y) based on number of years since 2012(x)

Answers

So, after a year, the population will be

23 000*1.02 (which is 23460 people).

And after two years it will be:

23460*1.02, which is 23930 people. Another way of writing it is
23000*1.02*1.02

so we can generalize: the population of the town, y= 23 000* $1.02 ^(x)$

where x is the number of years passed

Put the following equation of a line into slope-intercept form, simplifying all fractions2x+4y=4

Answers

Answer:

y = -1/2x + 1

Step-by-step explanation:

You want to get y by itself. subtract 2x from both sides. now you're left with 4y = -2x + 4. then divide both sides by 4 to get y by itself. this equals y = -1/2x + 1

4.- UN RELOJERON COBRO $391.40 POR COMPONER 3 RELOJES; ¿CUANTO COBRARA POR ARREGLAR 5 RELOJES?

Answers

El relojeron les cobrará 652.33 por los 5 reloj ya que cada reloj vale 130.46

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