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Rina8888 [55]
3 years ago
13

What is the graph of 3x + 5y = –15? Image for option 1 Image for option 2 Image for option 3 Image for option 4

Mathematics
1 answer:
saveliy_v [14]3 years ago
6 0
Move x
5y = - 15 - 3x
y = - 3 - 3/5x
y = - 3/5 - 3
-y = 3/5 + 3
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Answer this question for please!Describe the steps.Thanks!
GREYUIT [131]
1. 75/300 = x/48 (your proportion)
2. x= 12

3. 30/240 = x/24 (your proportion)
4. x= 3

Your answer would come out to 15 miles total.



4 0
3 years ago
a goat tethered to a stake by a rope has grazed the meadow over an area of 12.56msqare around it stretching the rope. i) what is
Nikolay [14]

Answers:

length of rope = 2 meters

perimeter of meadow = 12.56 square meters

=========================================================

Explanation:

Assuming there are no structures (buildings, fences, etc) to get in the way of the goat, this means the goat's area that it can roam is a circle with radius r

The area of the circle is pi*r^2 which is equal to 12.56 square meters

pi*r^2 = 12.56

3.14*r^2 = 12.56

r^2 = 4

r = sqrt(4)

r = 2

The radius of the circle is 2 meters. This is the length of the rope. If the goat goes out as far as it can go, and tries to move left/right, then it will trace out a circle of radius 2. This is assuming the rope is kept fully taut the entire time.

The perimeter of the circle is the same as the circumference

circumference = 2*pi*r

circumference = 2*pi*2

circumference = 4*pi

circumference = 4*3.14

circumference = 12.56

The circumference and area are the same because r^2 = 4 and 2*r = 4 when r = 2. For any other positive r value, the area and circumference will be different values.

So in short, if a friend says that the area of a circle is the same as its perimeter, then you can immediately conclude the radius is 2.

Side note: throughout all of this solution, I used the approximation pi = 3.14 though pi has more decimal digits

7 0
3 years ago
Read 2 more answers
The length of a rectangle is 3 inches greater than the width.
kati45 [8]

Answer:

A - x (x+3) = Area of the rectangle

B- 28 inches squared

Step-by-step explanation:

B- using the formula from A

x = 4

x + 3 = 4 +3 = 7

4 times 7 is 28

4 0
3 years ago
Read 2 more answers
What is the perimeter of a triangle with sides<br> 14 inches, 8 inches, and 16 inches in length?
slamgirl [31]

Answer:

38 inches

Step-by-step explanation:

just add them all together.

4 0
3 years ago
Glenn invested $15,000 at 3% interest compounded annually.
Anestetic [448]

15000 * (1+ 0.03)^4

15000  *1.1255 = 16882.63 total after 4 years


16882.63 - 15000 = 1882.63 total interest


Answer is D


3 0
3 years ago
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