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Marianna [84]
3 years ago
5

When given an equation like 6 x − 3 = y , you need to set the denominator, x - 3, equal to 0 and solve for x. Once you solve for

x, the domain is that value of x. For this example, the domain would be written as "x = 3 ".
Mathematics
1 answer:
olga nikolaevna [1]3 years ago
5 0
False because if you're given the equation 6x - 3 = y, you don't have a denominator

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Gino used 3/4 of the nails in a box. He has 16 nails left. How many did he use?
Irina18 [472]
Gino used 48 nails

If you take 16 and times it by 4, you get 64, you times it by four to get 4/4 which is the whole nail box. So 64-16 is 48 which is then 3/4 of the nail box.
6 0
3 years ago
Two persons work together at the local aquarium. It takes the first person 120 minutes to clean the jellyfish tanks. Since the s
matrenka [14]

Answer:

168 minutes

Step-by-step explanation:

It takes 120 minutes for the first person to clean the jellyfish tank.

This means that in 1 minute the first person cleans \[\frac{1}{120}\] of the tank.

Let the time taken by the second person working alone to clean the tank be x minutes.

Then in 1 minute the second person cleans \[\frac{1}{x}\] of the tank.

Working together, the two persons clean,

\[\frac{1}{120} + \frac{1}{x}\] of the tank

But it is given that the two persons working together can clean the tank in 70 minutes. This means that in 1 minute both of them can clean \[\frac{1}{70}\] of the tank.

Expressing in equation form:

\[\frac{1}{120} + \frac{1}{x} = \frac{1}{70}\]

\[=> \frac{1}{x} = \frac{1}{70} - \frac{1}{120} \]

\[=> \frac{1}{x} = \frac{12-7}{840} \]

\[=> \frac{1}{x} = \frac{5}{840} \]

\[=> \frac{1}{x} = \frac{1}{168} \]

\[=> x = 168 \]

This means that the second person can clean the tank in 168 minutes.

7 0
3 years ago
Convert units of time <br> Convert 5 hrs to seconds.
emmasim [6.3K]

Answer:

<h2>18000 seconds!</h2>

Step-by-step explanation:

<h2><u>5 hours is 18000 seconds!</u></h2>
6 0
4 years ago
Read 2 more answers
I’ll give brainlist to best answer
qaws [65]

Answer:

12.25

Step-by-step explanation:

Expression

x^2 + 2y

x = 2.5

y = 3

x^2 = 6.25

2y = 3*2 = 6

x^2 + 2y = 6.25 + 6

x^2 + 2y = 12.25

5 0
3 years ago
Read 2 more answers
Sam is looking for a cell phone plans.A local company offers a monthly plan for $58.95. The company is having a sale and offerin
AysviL [449]

Answer:

Correct cost for the cell phone monthly plan = 54.2$

Explanation:

Price for monthly plan = 58.95$

Discount = 4.75 $

New cost found out by Sam = 11.45$

Discount considered by Sam = 58.95 - 11.45 = 47.5$

So, Instead of considering discount amount of 4.75$ Sam accidentally considered 47.5$, so he got 11.45$ as new cost for the cell phone plan.

Actual cost = 58.95 - 4.75 = 54.2$

Correct cost for the cell phone monthly plan = 54.2$

8 0
3 years ago
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