Well, lets take a look at our options here. Option C is incorrect because PR doesn't equal SQ. D is wrong because it just tells us the same thing, which doesn't help us. A and B are our only answers. B is wrong because we can already see that the angle is a right angle, but we don't know if the hypo is the same, which is needed because without it, we can't tell what the other 2 angles are. A is the right answer.
Answer:
81
Step-by-step explanation:
Assuming the pigeons are either male or female, the 45% of them that are not female are male. Of those, there are 40% that are not white, so 60% are white. Then the number of white male pigeons is ...
60% of 45% of 300 = 0.60 · 0.45 · 300 = 81
The gardeners should buy 54 white hydrangeas and 88 pink hydrangeas altogether.
Step-by-step explanation:
Let,
Number of white hydrangeas = x
Number of pink hydrangeas = y
According to given statement;
In first bed
x+y = 40 Eqn 1
In second bed
2 times the number of white hydrangeas and 3 times the number of pink hydrangeas as in the first bed.
2x+3y=102 Eqn 2
Multiplying Eqn 1 by 2
Subtracting Eqn 3 from Eqn 2
Putting y=22 in Eqn 1
Number of white hydrangeas altogether = x+2x = 3x = 3(18) = 54
Number of pink hydrangeas altogether = y+3y = 4y = 4(22) = 88
The gardeners should buy 54 white hydrangeas and 88 pink hydrangeas altogether.
Keywords: linear equation, elimination method
Learn more about elimination method at:
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A#b=ab+a+b
Replace a with 2 and b with 5
2#5=2*5+2+5=17
Answer C
One way to do it is to find an explicit formula for the
th term.
The pattern suggests that the
th term is given by
, and so the fifth term is
.
Another way to do it would be to plug
into the recursive formula to find
, then
, and so on.