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valkas [14]
3 years ago
14

What is the constant of proportionality for the relationship shown in the table? x 2 4 6 8 y 1 2 3 4

Mathematics
1 answer:
Alecsey [184]3 years ago
6 0
What is the constant of proportionality for the relationship shown in the table? x 2 4 6 8 y 1 2 3 4

☆☆☆☆☆☆1/2
2
4
8

Y=kx where k is the constant proportionality
y=kx
(1)=k(2)
1/2=k2/2
1/2=k
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a plumber worked at a house on two diffrent days. on the first day, the plumber worked for 5/8 of an hour, on the second day the
Mademuasel [1]

Answer: The plumber worked 7/8 hours in total.

Step-by-step explanation:

5 0
3 years ago
There are 10 marbles in a bag. 1/5 are red and the others are blue. What is the ratio to blue marbles.
Irina-Kira [14]

Answer:

Ratio = 1 : 4

Step-by-step explanation:

Total marbles = 10

Given 1/5 is red, that is 1/5 of the total marbles are red

                                                            \frac{1}{5} \ of \ 10 = \frac{1}{5} \times 10 = 2

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4 0
2 years ago
Find expressions for the partial derivatives of the following functions:
nlexa [21]

Answer:

Step-by-step explanation: partial derivative is the differentiation of one variable e.g. X while leaving the values of the other variable e.g. Y

These four questions A, B, C and D have different functions separated by commas. I will not assume the commas to be something else like a plus sign.

A. f(x) = g'(x).k(y) , g'(x) + h(y)

f(y) = k'(y).g(x) , g(x) + h'(y)

B. f(x) = g'x (x+y)

f(y) = g'y (x+y) , h'y (y+z)

f(z) = h'z (y+z)

C. f(x) = f'x (xy) , f'x (zx)

f(y) = f'y (xy) , f'y (yz)

f(z) = f'z (yz) , f'z (zx)

D. f(x) = f'x (x) , g'(x) , h'x (x,y)

f(y) = h'x (x,y)

These are the partial derivative expressions for each variable in each function. You will need to pay a lot of attention to understand:

* while differentiating X alone, functions in Y which are separated by commas from the functions in X, are ignored totally because they are different questions

* In functions where X added to Y is in a bracket e.g. (x+y), to find the derivative of X, Y isn't thrown away because they are joined (by a plus sign) the derivative of X alone in this case would be f'x (x+y)

* f(x), just like g(x), simply means/represents a function in X hence f'(x) means the differentiation of all X-terms in that function

6 0
2 years ago
Adina read 60 out of 100 pages in a comic book.Write the fraction of the pages she read in simplest form
Ad libitum [116K]

Answer:

3/5 is 60/100 in it's simplest form.

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2 years ago
Find the maximum value of Y = -3(x+7)(x+1)
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For my answer i got y = x - 18
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