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AlladinOne [14]
3 years ago
7

The ratio of boys to girls in a class is 4:5, what fraction of the class is boys

Mathematics
2 answers:
scoundrel [369]3 years ago
8 0
Boys:girls = 4/5

boys = 4/(4+5) = 4/9 of the class
Naya [18.7K]3 years ago
7 0
Total no boys and girls be 4x and 5x
there total students =9x
no of boys by total no of students =4x/9x
4/9
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5 0
3 years ago
What is the median?<br> -2 -3 8 -6 -9
mars1129 [50]

Answer:

-3

Step-by-step explanation:

its the middle number so you put them in order and get the ndeswer just whatevers in the midde

-9 -6 -3 -2 8

8 0
3 years ago
Read 2 more answers
If f(x)=2x^2+(1000/x), find the average rate of change of f(x) from x=a to x=a+h.
galina1969 [7]

Answer:

\frac{\frac{1000}{x+h}-\frac{1000}{x}}{h} is your average rate of change,

Step-by-step explanation:

average rate of change is

\frac{f(a+h)-f(a)}{a+h-a}, by slope formula

simplify this to get \frac{f(a+h)-f(a)}{h}, which is the definition of the derivative as h goes to 0

\lim_{h \to 0} \frac{f(a+h)-f(a)}{h}

since you defined x=a, we can substitute a for x and vice versa to find our derivative.

\lim_{h \to 0} \frac{(2x^2+\frac{1000}{x+h})-(2x^2+\frac{1000}{x})}{h}

simplifying

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6 0
3 years ago
A biscuit recipe calls for 2 pounds of all purpose flour and .75 pound of butter, what would be the baker’s percentage for butte
Goryan [66]

Answer: 37.5%


Explanation:


Percentage is defined as parts of an amount  in 100 parts of a basis. This must be stated mathamatically for better understanding and for calculations. It is the ratio:

             % = (parts / base) × 100.


In this case you need to express the amount of butter as a part in 100 parts of all purpose flour, which, using the above definition, is:


        % butter = (0.75 pounds of butter / 2 pound of flour) × 100

         % butter = 0.75 × 100 / 2 = 75 / 2 = 37.5


The answer is expressed as 37.5%.

4 0
3 years ago
Can someone help me plzzzz!
oksian1 [2.3K]

8.2is the answer

Step-by-step explanation:

|CB|+8

7 0
3 years ago
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