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3 years ago

What's the numerator for the following rational expression? 8/y+3/y=?/y

Mathematics

2 answers:

Andrei [34K]3 years ago

4 0

Your answer is 11/y since the denominator is the same just add the 8 and 3

GuDViN [60]3 years ago

3 0

Ur answer would be 11/y

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A toy manufacturer uses 90 pints of plastic to make 600 action figures. If they use 810 pints of plastic in an 8 hour shift, how

lutik1710 [3]

Answer:

The number per hour = 5400 ÷ 8 = 675 action figures

Step-by-step explanation:

* Lets explain how to solve the problem

- A toy manufacturer uses 90 pints of plastic to make 600 action figures

- they use 810 pints of plastic in an 8 hour shift

- To find how many action figures are made per hour we must to find

how many action figures in an 8 hour shift and then find the number

of the action figures per hour

∵ The toy manufacture uses 90 pints of plastic to make 600 action

figures

∵ They use 810 pints

- Lets find how many action figures are made by this numbers of pints

∴ 90/600 = 810/x ⇒ x is the number of action figures

- Use the cross multiplication to find x

∴ 90 x = 810 × 600

∴ 90 x = 486000 ⇒ divide both sides by 90

∴ x = 5400

∴ They will use 810 pints to make 5400 action figures

∵ They use 810 pints in an 8 hour shift

∴ They make 5400 action figures in 8 hours

- To find the number of the action figures per hour divide the number

of them in 8 hours by 8

∴ The number per hour = 5400 ÷ 8 = 675 action figures

8 0

3 years ago

Describe the continuity of the graphed function. Select all that apply.

victus00 [196]

Using continuity concepts, it is found that the correct options are:

The function is continuous at x = -4.
The function has an infinite discontinuity at x = -1.

-----------------------------

A function f(x) is continuous at x = a if:

$\lim_{x \rightarrow a^{-}} f(x) = \lim_{x \rightarrow a^{+}} f(x) = f(a)$

-----------------------------

At x = -4, there are no changes in the definition of the function, thus, it is continuous.
At x = -1, we have that:

$\lim_{x \rightarrow -1^-} f(x) = 0$

$\lim_{x \rightarrow -1^+} f(x) = f(1) = 1$

A different definition depending on the which side of -1 the function is, thus, it is a jump discontinuity.

A similar problem is given at brainly.com/question/21447009

8 0

3 years ago

What are significant figures?

scZoUnD [109]

Answer:

Significant Figures are the figures in a number that are meaningful and are digits with no zeros. Those zeros can be traced in a number like “320”, or “5670.0045”. Those zeros are not counted when counting the significant figures.

I hope you understand.

7 0

3 years ago

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There are exactly three colors of socks in lamont's drawer: red, blue, and green. the current ratio of red to blue to green sock

Harrizon [31]

If the current ratio of red to blue to green socks is 2:3:7, then there are exactly 2x red socks, 3x blue socks and 7x green socks.

1. If amount of red socks are increased by n new socks, then there are exactly 2x+n red socks, 3x blue socks and 7x green socks and (2x+n):3x:7x=8:9:21. This means that 2x+n=8y, 3x=9y, 7x=21y. You have that x=3y and 6y+n=8y, n=2y.

2. If amount of blue socks are increased by n+2 new socks, then there are exactly 2x red socks, 3x+n+2 blue socks and 7x green socks and 2x:(3x+n+2):7x=2:4:7. This means that 2x=2t, 3x+n+2=4t, 7x=7t. Now you have that x=t and 3t+n+2=4t, n=t-2.

3. Solve x=3y, n=2y, x=t, n=t-2. You obtain that t=3y, t-2=2y. Then 3y-2=2y and y=2. Hence, x=6=t, n=6-2=4.

Answer: n=4

4 0

3 years ago

Jamil ate 1/5 of a pie and Rashan ate 2/5 of a pie.

ki77a [65]

Answer:

3/5

Step-by-step explanation:

This is because 1/5 + 2/5 equals a totals of 3/5 eaten.

5 0

3 years ago

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