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Maslowich
3 years ago
7

Evaluate the polynomial 6x - y for x = 3 and y =4

Mathematics
1 answer:
Mashcka [7]3 years ago
8 0
6 x 3 is 18.  y is equal to 4.  18 minus 4 is 14.  The answer is 14.
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A pool contains 300 L of water. It
Eva8 [605]

Step-by-step explanation:

(300-60)/6,4=37,5

5 0
3 years ago
15 EASY POINTS HURRY-how could you use a coordinate grid to show that an equation in two variables x and y is not a linear equat
alekssr [168]

Answer:

Well a linear equation is in a straight line.  To show it was not linear on a coordinate grid the slope would not be a straight line

Step-by-step explanation:

7 0
2 years ago
Please help solve: Graph y-4=2(x-2)
xeze [42]

Answer:

Graph y = 2x

Step-by-step explanation:

First, let's get the equation into standard form. Distribute the 2 on the right.

y-4=2x-4

Next, we want the variable "y" to be alone, so we at 4 to both sides.

y-4+(4)=2x-4+(4)\\\\y=2x

That is our equation in standard y = mx + b form. "m" is our slope, while "b" is our y-intercept. Above , we don't have a value for b, therefore the line passes through the origin.

We do, however, have a slope, which can be thought of as \frac{rise}{run} or rise over run. To represent this, we can rewrite our slope as:

y=\frac{2}{1}x

Meaning in each interval, the line goes up by 2 units, and moves forward by 1.

3 0
3 years ago
Which equation represents a line that is perpendicular to line PQ?
valentinak56 [21]

Answer:

B. y=1/3x+4

Step-by-step explanation:

Hi there!

We are given the line PQ and we want to find the line that is perpendicular to it

Perpendicular lines have slopes that are negative and reciprocal. When they are multiplied together, the result is -1

So first, let's find the slope of the line PQ

The point P is given as (-8, 7) and the point Q is given as (-4, -5)

The formula for the slope calculated from two points is \frac{y_2-y_1}{x_2-x_1} where (x_{1} y_1) and (x_2, y_2) are points

We have the needed information for the slope, but let's label the values of the points to avoid any confusion

x1=-8

y1=7

x2=-4

y2=-5

Now substitute into the formula (m is the slope, and remember: the formula contains SUBTRACTION):

m=\frac{(-5-7)}{(-4--8)}

simplify

m=\frac{-5-7}{-4+8}

add

m=-12/4

divide

m=-3

So the slope of the line PQ is -3

As said above, perpendicular lines have slopes that have a product of -1

So to find the slope of the line perpendicular to PQ, use this formula:

-3m=-1

divide both sides by -3

m=1/3

The only line that has a slope of 1/3 is B (y=1/3x+4), so B is the answer.

Hope this helps!

3 0
3 years ago
In the pictures down below<br><br>Can anyone help? Fractions and percents<br><br> 
wariber [46]
1st Picture:
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2nd Picture:

1)80 percent of 80 = .8*80 =64&#10;\\\boxed{64}&#10;\\\\2)95percent of 100=.95*100=95&#10;\\\boxed{95}
7 0
3 years ago
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