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fredd [130]
3 years ago
15

Find the constant of variation k for the direct variation. 4x = –6y

Mathematics
2 answers:
FromTheMoon [43]3 years ago
8 0

Answer:

either -6/4 or -4/6 I thing it's -4/6 or 2/3 im not to sure

Step-by-step explanation:


Gennadij [26K]3 years ago
4 0

Answer:

The constant k is equal to -(2/3)

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In this problem we have

4x=-6y

Isolate the variable y

y=-(4/6)x

Simplify

y=-(2/3)x

In a direct variation the constant k is equal to the slope of the line

m=k=-(2/3)

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if a car traveling at 100 m/s must slam on the brakes to avoid hitting a raccoon and it takes 4 seconds for the car to slow down
rusak2 [61]

1.)

Velocity is in m/s, and acceleration is in m/s^2 like you said. Because of this, we can calculate this by dividing the speed by the time it took to get to that speed.

(20 meters/second) / 10 seconds = 2 meters/ second^2

2.)

Same thing with the first one.

(100 meters/second) / 4 seconds = 25 meters / seconds^2

3 0
3 years ago
A fish tank has the shape of a rectangular prism. It has a length of 214 meters, width of 78 meters, and a height of 112 meters.
lesya692 [45]

Answer:

2 61/64 m2

Step-by-step explanation:

V = length * width * height

2.25 * 7/8 * 1.50

V = 2 61/64 m2


* = multiplication symbol

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5 0
3 years ago
There are 12 students in a homeroom wearing a school t-shirt these students make up 60% of the class how many students are in th
Yuki888 [10]

Answer:

there is a total of 20 students in the class because 60% of 20 is 12

Step-by-step explanation:

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7 0
3 years ago
What is the area of circle with a radius of 13 milimeters? use 3.14 for pi
MrRissso [65]

Answer:

530.66 mm²

5.3066 cm²

Step-by-step explanation:

A = π·r²

= 3.14×(13mm)²

= 3.14×169mm²

= 530.66 mm²

= 5.3066 cm²

8 0
3 years ago
Read 2 more answers
2(1/4x + 4) = 3(x -2) PLZ HELP
frozen [14]
Distribute 2 and remove parentheses :
1/2x+8=3x-6
Multiply both sides of equation by 2:
x+16=6x-12
Move terms:
x+16-6x=-12
x-6x=-12-16
Collect like terms:
-5x=-28
Divide both sides:
x=28/5
8 0
3 years ago
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