MATHEMATICS MIDDLE SCHOOL

Find the slope of the line that goes through the points (-15,70) and (5,10) and (2,7) and (6,3).

Answers

Answer 1
Answer:

(5,10)(2,7)

Rise/run = 10-7/5-2 = 3/3 = 1


Therefore, the slope of the line is 1.
Answer 2
Answer: My answer was right I looked it up why you delete it?!

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What is the point of intersection when the system of equations below is graphed on the coordinate plane? -x+y=4 6x+y=-3

Answers

Answer:

The answer IS (-1,3)

Step-by-step explanation:

Plug in these (answers) and you get 2 true statements:

-x +y=4

1 + 3 = 4  (because the neg. 1x multiplied by -1 answer = positive 1.

6x +y = -3

6(-1) + (3) =- 3

-6 +3 = -3

Answer:

The answer is (-1, 3)

Step-by-step explanation:

The resistance (R) in a wire increases when the length of the wire (L) increases. Write the correct equation for this scenario, and solve for when the length is 1. Length Resistance 10 2 15 3 a. R = 20 over L; R = 20
b. R = .2L; R = 5
c. R = .2L; R = .2
d. R = 20 over L; R = 5

Answers

Answer: c. R = 0.2L ; R =0 .2


Step-by-step explanation:

Given: When length of wire is L_1= 10 units, then resistance of wire R_1==2 ohm

When length of wire is L_2=15 units, then resistance of wire R_2==3 ohm

Since, the resistance (R) in a wire increases when the length of the wire (L) increases. Therefore, they are directly proportional.

(R)/(L)=(R_1)/(L_1)

(R)/(L)=(2)/(10)\n\Rightarrow\ R=0.2L

Now, for Length L=1 unit, we have

R=0.2(1)=0.2

Y=5x Is it proportional or not ?

Answers

yes it is proportional.

A farmer is putting up a fence for her animals. She orginally had the fence enclosing a square was 18ft by 18ft. Suppose she uses the same amount of fencing to enclose a circular area. What is the area of the circle?

Answers

First look: More than 324 square feet :)
Now, l=2\pi*r which means that r=(l)/(2\pi). But l is the original perimeter, 4 times the side of the square, that is, 72 ft. So, r=(72)/(2\pi)=(36)/(\pi)
Now, the area of that circle is A=\pi*r^2=\pi*(1296)/(\pi^2)=(1296)/(\pi), which is about 412.5 square feet. It's true, that's more (that's the most you can actually get with that amount of fence :) )

How do you round 46,491 to the nearest ten-thousand

Answers

You look at the place value before that value. You look at the place value on your right and tell yourself if it's 5 and more you round up, if it's 4 and less you stay and the others turn into 0s. Like this: 46,491 rounds to 46,000.
46,491 rounded to the nearest ten thousand is 50,000.

Because 46,491 is closer to 50,000 than it is to 40,000.

If F(x) = x+6 and G(x) = x^4, what is G(F(x))?

Answers

Answer:

c because f(x) is x+6 and the bracket means multiply

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