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jekas [21]
3 years ago
14

Need help on 12,14,16

Mathematics
1 answer:
Helga [31]3 years ago
6 0
12. Since k is constant we can find k when given any point by dividing the y-coordinate by the x-coordinate. For example if y varies directly as x, and y =6 when x=2, the constant of variation is k==3. The equation describing this direct variation is y=3x.
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On paper, make a rectangle that has points A and B as two of its vertices and has a perimeter of 40 units. Draw and label the tw
Westkost [7]

Answer:

A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)

Step-by-step explanation:

If a Rectangle has a perimeter of 40 units, then we can write that formula and find the a formula for the coordinates:

\left\{\begin{matrix}w+l=20 & \\ w*l=100 & \end{matrix}\right.\Rightarrow w=20-l\Rightarrow (20-l)l=100\Rightarrow -l^2+20l-100=0\Rightarrow l^2-20l+100\Rightarrow (l-10)(l-10)\Rightarrow l=10\therefore l=10\: and\: w=10

Therefore we can say:

A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)

Technically when w=lin this rectangle is a square, a degenerate square.

8 0
3 years ago
What is the answer to this?​
myrzilka [38]

Answer:r=3cm,diameter =6cm and C=18.84cm

Step-by-step explanation:

To find the radius,diameter and circumference according to the diagram drawn above

r=3cm

Diameter=2×3cm

d=6cm

To find the circumference

C=2πr

C=2×3.14×3cm

C=18.84cm

4 0
3 years ago
Find the indicated root
Sever21 [200]

So you have to put 25 inside the blank box.

look at the attached picture

Hope it will help you

Good luck on your assignment

6 0
3 years ago
Read 2 more answers
Help me quys plz, which one is it
torisob [31]
It’s the last answer because the slope equals 1 which basically equals just x. And the y intercept is -5
7 0
3 years ago
When the number of bricks is multiplied by 2 the length is multiplied by
kozerog [31]
2  ? That seems the most logical answer
3 0
3 years ago
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