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Sergeeva-Olga [200]
3 years ago
12

Help me with this please!!

Mathematics
1 answer:
devlian [24]3 years ago
8 0

Answer:

Well if you were to fund out what the numbers of the variables are, you would have to multiply it by 50, then you are to divide THAT by two to hey your answer

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Supervisor a earns a flat rate of $25 per hour, while supervisor b earns $20 per hour for the first 30 hours and then 50% more f
mixas84 [53]
Let same number of hours = x, 
since the salary earned is also the same, then
Salary of supervisor A = $25x
Salary of supervisor B = $20(30)+$30(x-30)
Equating
25x=600+30(x-30)
30x-25x=900-600
5x=300
x=60 hours
Check:
Salary of supervisor A = 25*60=1500
Salary of supervisor B =  20*30+30*(60-30)=600+900=1500, ok.
5 0
3 years ago
Dr. Drazzle collected 70 L of ocean water to test for antibacterial properties he split the water into 100 samples how much wate
Mazyrski [523]
70 liters ÷ 100 samples= 0.7 or 7/10 liter per sample

Hope this helps! :)
6 0
3 years ago
Read 2 more answers
Which of the following is NOT true about the following equation. y= -4​
Alex Ar [27]

Answer:

Answer is D.

Step-by-step explanation:

Which is not true?

So, lets assess the answers given to the question.

A. It is the equation of a horizontal line.

Yes, it is. Since there is only one y - value which is y = -4, we can confirm this is the y intercept, so therefore the x value is zero. But it's not the answer we're looking for.

B. It's slope is zero, yes the slope is zero. It only lists the y-intercept which confirms that the slope is 0.

C. Yes, I mean i can't really explain how. Just use desmos calculator, the graph is exactly perpendicular.

D. The line actually does cross the x-axis, -4 is the y intercept and the x value is 0, and zero is still a point. So D is the one which isn't correct making it the correct answer.

6 0
3 years ago
There are 34000 adults living in Grand City. In examining attitudes toward the news, a research group asked a random sample of G
dybincka [34]

Answer: check the attached

Step-by-step explanation:

56+86+128+20+49= 339

Radio or newspaper

constitute to 76 out of 339

=34000*76/339

7,622 is the total number of adult whose main sources of news are nespaper and radio

4 0
3 years ago
Which of the following are rational numbers?
svlad2 [7]

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

{7, -5, (2/3), 5.79}

»»————- ★ ————-««  

Here’s why:  

  • Rational numbers are numbers that could be written as a fraction with two integers.

⸻⸻⸻⸻

\boxed{\text{\underline{\textbf{Some Examples of Rational Numbers Are...}}}}\\\\\rightarrow \text{Integers}\\\\\rightarrow \text{Perfect Squares}\\\\\rightarrow \text{Terminating Decimals}\\\\\rightarrow \text{Recurring Decimals}

⸻⸻⸻⸻

  • 7 and -5 are integers, so they are rational.
  • \frac{2}{3} is already a fraction with integers. It is rational.
  • 5.79 is a terminating decimal. It is rational.
  • The number π is a famous irrational number. It does not terminate nor repeat.
  • \sqrt{13} is not a perfect square. It is irrational.
  • \sqrt{-4} is a perfect square, but it is simplified to a complex number. <em>Complex numbers are not rational. </em>

⸻⸻⸻⸻

The rational numbers are {7, -5, (2/3), 5.79}.

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

8 0
3 years ago
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