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2 years ago

What number can be use in the blank to make the equation true? 3x + 1 = 3x +___

Mathematics

2 answers:

MAXImum [283]2 years ago

8 0

Answer:

Step-by-step explanation:

jarptica [38.1K]2 years ago

5 0

Answer:

any number between 1 and 8

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WARRIOR [948]

Answer:

$2\,(x-1)^2=4$

which is the first option in the list of possible answers.

Step-by-step explanation:

Recall that the minimum of a parabola generated by a quadratic expression is at the vertex of the parabola, and the formula for the vertex of a quadratic of the general form:

$y=ax^2+bx+c$

is at $x_{vertex}=\frac{-b}{2\,a}$

For our case, where $a=2\,\,, b=-4\,\,,\,\,and \,\,c=-2$ we have:

$x_{vertex}=\frac{-b}{2\,a}\\x_{vertex}=\frac{4}{2\,*\,2}\\x_{vertex}=1$

And when x = 1, the value of "y" is:

$y(x)=2x^2-4x-2\\y(1)=2(1)^2-4(1)-2\\y(1)=2-6\\y(1)=-4\\y_{vertex}=-4$

Recall now that we can write the quadratic in what is called: "vertex form" using the coordinates $(x_{vertex},y_{vertex)$ of the vertex as follows:

$y-y_{vertex}=a\,(x-x_{vertex})^2$

Then, for our case:

$y-(-4)=2\,(x-1)^2\\y=2\,(x-1)^2-4$

Then, for the quadratic equal to zero as requested in the problem, we have:

$y=2\,(x-1)^2-4=0\\2\,(x-1)^2-4=0\\2\,(x-1)^2=4$

5 0

3 years ago

. A pair of shoes are $98.75,

djyliett [7]

Answer:

a. saletax = 98.75

100

5 = 98.75

100 1

we cross multiple

5(1) = 100(98.75)

5 = 100(98.75)

divide both side by 5

5 = 100(98.75)

5 5

since 100 can divide 5 so we divide them

= 20(98.75)

amount sale tax = 1975

b. 98.75 × 5 =493.75$

8 0

3 years ago

I will give brainliest just please help

prisoha [69]

Answer:

you can be on a call back at your the one in your the one in your office at it and

3 0

3 years ago

Read 2 more answers

En una granja hay gallinas y vacas, en total uman 624. Se sabe que el numero de vacas son 36 veces mas que el numero de gallinas

BartSMP [9]

Answer:

17 R 12

Step-by-step explanation:

Hola,

en total son 624 y las vacas son 36 mas que las gallinas, vos tienes que divider 624 con 36

624÷36

6 0

2 years ago

Help me please!! I’m in a hurry!! 15pts!!

Nikolay [14]

Answer:

300 times

Step-by-step explanation:

6 0

3 years ago