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FromTheMoon [43]
3 years ago
6

There are a total of 12 boys in a chess club. If the ratio of boys to girls in the chess club is 3 to 5, what is

Mathematics
1 answer:
n200080 [17]3 years ago
6 0
<h3>Answer:  32</h3>

==================================================

Explanation:

  • b = number of boys = 12
  • g = number of girls = unknown

The ratio of boys to girls is 3 to 5, which means,

b/g = 3/5

12/g = 3/5 ... plug in b = 12

12*5 = g*3 ... cross multiply

60 = 3g

3g = 60

g = 60/3 .... divide both sides by 3

g = 20 is the number of girls

b+g = 12+20 = 32 total students in the chess club.

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The shorter leg of a 30 60 90 triangle is a 4. how long is the hypotenuse?
Karolina [17]
Check the picture below.

so if x = 4, then 2x?  surely you know that.

4 0
3 years ago
I don’t understand these
BaLLatris [955]
So these are basically isolating the variables.
The first equation is 3g + 5 =17.
In order to isolate the variable, we would have to get g by itself, that means 5 would have to go. In order to do this, we would do the opposite. Since it is positive 5 we would add negative 5, in order for it to disappear. This works because a positive 5 and negative 5 cancel each other out. Whatever you do to one side of the equation you have to do to the other, since we subtract 5 on one side we have to subtract 5 on the other. Therefore we would do 17-5.
Now we have 3g=12
We know that 3g is basically 3 multiplied by g. The opposite of multiplication is division.Therefore we would divide by 3 on both sides.
The answer to the first question would be g= 4.
And if you want to check if your answer is correct you plug the value in.
So
3(4) + 5 =17


5 0
3 years ago
Select the true inequality 1.9&lt;.19 , .29&gt;.3, .6&lt;2.07, or 2.15&gt;2.2
n200080 [17]
6 <2.07 I believe have a nice day
7 0
3 years ago
Last week Jonas spent 9 1/6 hours working on his homework over a period of 4 2/3 days. Approximately how many hours a day, on av
Elina [12.6K]

Answer:

55/28 hours/day (approx.  1.96 hours/day)

Step-by-step explanation:

9 1/6 hours / 4 2/3 days

= 55/6 hours / 14/3 days

= 55/6 * 3/14 hours/day

= 55/28 hours/day

(approx.  1.96 hours/day)

3 0
3 years ago
What is the equivalent decimal to this fraction? 10/45 0.2 0.222222222... 0.232323232323... 0.181818181818...​
Ivan

Factorize the numerator and denominator, then simplify:

10/45 = (2×5)/(9×5) = 2/9

Now,

1/9 = 1/10 + 1/90

1/90 = 1/10 × 1/9 = 1/10 × (1/10 + 1/90) = 1/100 + 1/900

1/900 = 1/100 × 1/9 = 1/100 × (1/10 + 1/90) = 1/1000 + 1/9000

and so on, which is to say

1/9 = 1/10 + 1/100 + 1/1000 + …

or

1/9 = 0.111…

so that multiplying both sides by 2 gives

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5 0
2 years ago
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