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Thepotemich [5.8K]
3 years ago
8

Grayson evaluated 4x2 + 2y for x = 3 and y = 2.

Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0
Grayson did not simplify the question
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Please help I think its 16 but not sure
Stels [109]

Answer:

I think its 12 to this question

6 0
3 years ago
Use elimination to solve the system of equations. 5x-2y=-3 4x-2y = -6
Effectus [21]

Answer:

x=3, y=9

Step-by-step explanation:

5x-2y=-3

4x-2y=-6

Then:

solve for y:

-2y=-6-4x

y=3+2x

Substitute y into either equation:

4x-2(3+2x)=-6

4x-6-4x=-6

-6=-6, use other equation

5x-2(3+2x)=-3

5x-6-4x=-3

x-6=-3

x=3

then:

y=3+2(3)

y=9

5 0
3 years ago
A line is perpendicular to y = - x - 2 and intersects the point (-5, 10)
Lady_Fox [76]

Answer:

y = x + 15

Step-by-step explanation:

If two lines are perpendicular to each other, they have opposite slopes.

The first line is y = - x - 2. Its slope is -1. A line perpendicular to this will have a slope of 1.

Plug this value (1) into your standard point-slope equation of y = mx + b.

y = 1x + b or y = x + b

To find b, we want to plug in a value that we know is on this line: in this case, it is (-5, 10). Plug in the x and y values into the x and y of the standard equation.

10 = (-5) + b

Simplify.

10 = -5 + b

Now, add 5 to both sides to isolate b.

15 = b

Plug this into your standard equation.

y = x + 15

This equation is perpendicular to your given equation (y = -x - 2) and contains point (-5, 10)

Hope this helps!

6 0
3 years ago
N is an integer, write down the values of n such that -15<3n<6
Ira Lisetskai [31]
-15 < 3n < 6

Divide all sides by 3

-5 < n < 2

Now you need all integers between -5 and 2.

-4, -3, -2, -1, 0, 1
3 0
3 years ago
A circle has its Center at (-2, 5) and a radius of 4 units. What is the equation of the circle?
Artist 52 [7]
\bf \textit{equation of a circle}\\\\ &#10;(x- h)^2+(y- k)^2= r^2&#10;\qquad &#10;center~~(\stackrel{-2}{ h},\stackrel{5}{ k})\qquad \qquad &#10;radius=\stackrel{4}{ r}&#10;\\\\\\\&#10;[x-(-2)]^2+[y-5]^2=4^2\implies (x+2)^2+(y-5)^2=16
8 0
3 years ago
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