I need help with this as soon as possible. #7 & 8

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

4 0

If I knew the answer I would helped u b,
$7yx$
ut I'm only in 7th grade but I will try

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Simplify 3(3x-1)^2=21

scoray [572]

3(3x-1)^2=21

(3x-1)^2 = 7

3x-1 = square root of 7

3x = square root of 7 - 1

x = (square root of 7 - 1)/3

4 0

4 years ago

Read 2 more answers

Step 1: Choose a point on the line, such as (2, 5).

Alenkasestr [34]

Answer:

y-3=2(x-1)

Step-by-step explanation:

So it looks like your line goes through (2,5) and (1,3) based on what you have said.

Looking at 5 to 3, that is down 2.

Locking at 2 to 1, that is left 1.

So the slope is -2/-1 =2/1=2.

Plug in the (x1,y1)=(1,3) and slope=m=2.

So using point slope form we have y-3=2(x-1).

5 0

3 years ago

Х у 20 14 1 3 5 2 5 10 Is this relation a function?.

dsp73

Answer:

No it is not a relation function if im correct there are two 5 x values so

Step-by-step explanation:

7 0

3 years ago

Which graph best represents the feasibility region for the system shown above? ( pics are in this)

zalisa [80]

Consider the system of inequalities

$\left\{ \begin{array}{l} y\ge 2 \\ x\le 6 \\ y\le 3x+2 \\ y\le -x+10. \end{array}\right.$

1. Plot all lines that are determined by equalities (see attached diagram)

$\left\{ \begin{array}{l} y=2 \text{ (red line)} \\ x= 6 \text{ (blue line)}\\ y=3x+2 \text{ (green line)} \\ y= -x+10 \text{ (orange line)}. \end{array}\right.$

2. Determine which bounded part of the plane you should select:

$y\ge 2$ means that you should take points with y-coordinates greater than or equal to 2 (top part of the coordinate plane that was formed by the red line);
$x\le 6$ means that you should take points with x-coordinates less than or equal to 6 (left part of the coordinate plane that was formed by the blue line);
for $y\le 3x+2$ you can check where the origin is placed. Since $0\le 3\cdot 0+2$ , the origin belongs to the needed part and you have to take the right part of the coordinate plane that was formed by green line.
for $y\le -x+10$ you can check where the origin is placed. Since $0\le -1\cdot 0+10$ , the origin belongs to the needed part and you have to take the bottom part of the coordinate plane that was formed by orange line.