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4 years ago

11

Please I need help on this!!

2 answers:

asambeis [7]4 years ago

5 0

Answer:

↔→jhgt

Step-by-step explanation:

garik1379 [7]4 years ago

5 0

Use photomath it’s a helpful app

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Factor completely, then place the factors in the proper locatio<br> y2x - yx - 20

katovenus [111]

I don’t believe it is factorable

6 0

4 years ago

Find the axis of symmetry and the vertex of the graph of y = 3x2 + 2x.

hichkok12 [17]

Step-by-step explanation:

<u>Finding Vertex</u>

Given

$y\:=\:3x^2\:+\:2x$

The vertex of an up-down facing parabola of the form

$y=ax^2+bx+c\:\mathrm{is}\:x_v=-\frac{b}{2a}$

The Parabola params are:

$a=3,\:b=2,\:c=0$

$x_v=-\frac{b}{2a}$

$x_v=-\frac{2}{2\cdot \:3}$

$x_v=-\frac{1}{3}$

$\mathrm{Plug\:in}\:\:x_v=-\frac{1}{3}\:\mathrm{to\:find\:the}\:y_v\:\mathrm{value}$

$y_v=3\left(-\frac{1}{3}\right)^2+2\left(-\frac{1}{3}\right)$

$=3\left(-\frac{1}{3}\right)^2-2\cdot \frac{1}{3}$

$=\frac{1}{3}-\frac{2}{3}$ ∵ $3\left(-\frac{1}{3}\right)^2=\frac{1}{3}$

$=\frac{1-2}{3}$

$=\frac{-1}{3}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$=-\frac{1}{3}$

$y_v=-\frac{1}{3}$

Therefore the parabola vertex is:

$\left(-\frac{1}{3},\:-\frac{1}{3}\right)$

$\mathrm{If}\:a$

$\mathrm{If}\:a>0,\:\mathrm{then\:the\:vertex\:is\:a\:minimum\:value}$

$a=3$

$\mathrm{Minimum}\space\left(-\frac{1}{3},\:-\frac{1}{3}\right)$

<u>Finding symmetry</u>

For a parabola in standard form $y=ax^2+bx+c$

the axis of symmetry is the vertical line that goes through the vertex $x=\frac{-b}{2a}$

$\mathrm{Axis\:of\:Symmetry\:for}\:y=ax^2+bx+c\:\mathrm{is}\:x=\frac{-b}{2a}$

$a=3,\:b=2$

$x=\frac{-2}{2\cdot \:3}$

$x=-\frac{1}{3}$

Therefore,

$\mathrm{Axis\:of\:Symmetry\:for}\:y=3x^2+2x:\quad x=-\frac{1}{3}$

3 0

3 years ago

What is a correct congruence statement for the triangles shown?

melamori03 [73]

For this one, look at the symbols inside each angle. In math, the rounded edges inside of angles mean they are congruent. So find which ones have the same amount of rounded edges and that would be your answer.

NKW ≅ UZE

put the corresponding angles in the middle. Since the object you were comparing to had the one line as the middle point, then that is your middle as well.

Hope this helps! Comment with any questions you may have.

6 0

3 years ago

Read 2 more answers

The temperature in the Arctic Circle at 9:00am was 22.8° below zero. By 6:00pm on the same day, the temperature had decreased by

rosijanka [135]

4.65 is the new temperature.

8 0

3 years ago

A. 3(x + 2) = 18<br> B. X + 2 = 18

son4ous [18]

Answer:

A. x=4

B. x=16

Step-by-step explanation:

A. multiply out: 3x+6=18

subtract 6 from both sides: 3x=12

divide both sides by 3: x=4

B. subtract 2 from both sides: x=16

6 0

3 years ago