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ddd [48]
3 years ago
6

The ratio of boys to girls in a class 4 : 5 A) What fraction of the class are boys

Mathematics
1 answer:
Travka [436]3 years ago
3 0

Answer:

4/9

Step-by-step explanation:

Ratio of boys = 4

Ratio of girls = 5

1. When illustrating ratios in fraction, you add the ratios

   4 + 5 = 9

2. Next you put the boys ratio over the total ratio

     4/9

3. Sometimes it can be reduced to a lower form eg. 5/10 can be reduced to

   1/2.

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HELPP!!<br> Select the correct answer.<br> What is the value of arcsin ?
Schach [20]

For this case we have that by definition, it is called arcsine (arcsin) from a number to the angle that has that number as its sine.

We must find the arcsin (\frac {\sqrt {2}} {2}). Then, we look for the angle whose sine is \frac {\sqrt {2}} {2}.

We have to, by definition:

Sin (45) = \frac {\sqrt {2}} {2}

So, we have to:

arcsin (\frac {\sqrt {2}} {2}) = 45

Answer:

Option B

5 0
3 years ago
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sveta [45]
I think the answer is B.
Hope this helps.

4 0
3 years ago
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The digit in the tens place of a two digit number is three times that in the units place. If the digits are reversed the new num
S_A_V [24]
We could do it with algebra.  But we can also do it the long way, which is
shorter than the algebraic way.

The digit in the tens place is 3 times the digit in the units place.
So the number MUST be
31, or
62, or
93 .
It can't be anything else.

Now here they are again, with the reverse of each one:

31 . . . 13      The new number is  18 less.
62 . . . 26      The new number is  36 less.
93 . . . 39      The new number is  54 less.

Obviously, the original number is 62.
 
4 0
3 years ago
4 people are going to a dinner party. Each person at
vladimir2022 [97]

Answer:

92 pounds

Step-by-step explanation:

Here is the complete question ;

4 people are going to a dinner party. Each person at the party will eat 23 pound of cake. If you can only buy whole pounds of cake, how many pounds should you buy?

total pounds to be bought = number of people at the party x total pounds they would eat

4 x 23 = 92 pounds

7 0
3 years ago
Srry but I need help with this
ddd [48]
Here ya go chief
You’re very welcome

7 0
3 years ago
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