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Lorico [155]
2 years ago
7

In a school election, 2/5 of the 30 candidates are girls and the rest are boys. How many candidates are boys?

Mathematics
2 answers:
Marianna [84]2 years ago
7 0
This should solve this problem

MrMuchimi2 years ago
3 0
Answer: 18

explanation: 30 split into 5 groups have 6 people in each. And 3 groups of 6 is 18. :) hope this helped
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2. The cost of having a window fixed is $100 plus $20 per hour of labor. Using h for the number of hours of labor, write an expr
ahrayia [7]

Answer:

the third one

Step-by-step explanation:

I hope this helps with your question :)

5 0
2 years ago
The graph of f "(x) is continuous and decreasing with an x-intercept at x = 0. Which of the following statements is true?
kari74 [83]

Answer:

The graph of f has an inflection point at x = 0.

Step-by-step explanation:

An inflection point occurs when the second derivative changes signs.  Since f"(x) is decreasing and has an x-intercept at 0, it changes signs from + to -, so there is an inflection point at x = 0.

7 0
3 years ago
15 POINTS!<br> What is the correct answer for Dean's problem? Explain where he went wrong.
prohojiy [21]

Answer:

The slope is 5/-2.

Step-by-step explanation:

Slope is y1-y2 over m1-m2 (rise over run). The first ordered pair is -2 (m1) and 11 (y1). We then subtract the second ordered pair (4 (m2) and -4 (y2)) from the first.

11 - (-4) = 11 + 4 = 15

-2 - 4 = -6

Remember, slope is rise over run (y over x), so the slope is 15/-6. Now, we must simplify. 15/-6 = 5/-2

Dean went wrong because he thought that slope was run over rise (x over y). If he had switched the two numbers, his answer would have been correct.

8 0
3 years ago
Which of the following is equal to 5⁄7? <br> A. 45⁄63<br> B. 54⁄63<br> C. 35⁄63<br> D. 42⁄63
Iteru [2.4K]

\bf \cfrac{45}{63}\implies \cfrac{9\cdot 5}{9\cdot 7}\implies \cfrac{9}{9}\cdot \cfrac{5}{7}\implies 1\cdot \cfrac{5}{7}\implies \cfrac{5}{7}

7 0
3 years ago
Read 2 more answers
A human heart beats an average of 80 beats per minute.How many beats is this in an hour?express your answer in scientific notati
nlexa [21]

Answer:

4,800

Step-by-step explanation:

Sorry I don't know how to explain it scientifically but I know how to do the calculations

1) Theres 60 minutes in an hour

2) 80x60= 4,800 beats

4 0
3 years ago
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