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Keith_Richards [23]
3 years ago
12

The equations y = 1/9x relates proportional quantities x and y. what is the value of x when y is 4?

Mathematics
1 answer:
weeeeeb [17]3 years ago
6 0
X = 36

being that you simplify both sides of the equation and solate the variable
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The side of a cube is 3^4 centimeters long. What is the volume of the cube?​
labwork [276]

Step-by-step explanation:

v=s^3 s=3^4=81

v=(81)^3

v=531,441 cm^3

7 0
3 years ago
Tina plans to have two children but doesn't know if they will be boy-boy, girl-girl, or a boy and a girl. What is the probabilit
vazorg [7]

Answer: 25%

Step-by-step explanation:

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3 years ago
An object is launched at 19.6 m/s from a height of 58.8 m. The equation for the height (h) in terms of time (t) is given by h(t)
beks73 [17]
H(t) = Ho +Vot - gt^2/2

Vo = 19.6 m/s
Ho = 58.8 m
g = 9.8 m/s^2

H(t) = 58.8 + 19.6t -9.8t^2/2 = 58.8 + 19.6t - 4.9t^2

Maximun height is at the vertex of the parabole

To find the vertex, first find the roots.

58.8 + 19.6t - 4.9t^2 = 0

Divide by 4.9

12 + 4t - t^2 = 0

Change sign and reorder

t^2 - 4t -12 = 0 

Factor

(t - 6)(t + 2) =0 ==> t = 6 and t = -2.

The vertex is in the mid point between both roots

Find H(t) for: t = [6 - 2]/2 =4/2 = 2

 Find H(t) for t = 2

H(6) = 58.8 + 19.6(2) - 4.9(2)^2 = 78.4

Answer: the maximum height is 78.4 m
5 0
3 years ago
What is the recirpocal of 21/32
soldier1979 [14.2K]
The product of a number and its reciprocal would be equal to one

So just flip the numbers

=32/21
3 0
2 years ago
Use the coordinate plane to help you identify the length of each leg then use the Pythagorean Theorem to find the length of CD​
mihalych1998 [28]

Answer:

the answe is 10.30

Step-by-step explanation:

im also from k12 lol

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2 years ago
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