Answer:
Number of boys = 675
Step-by-step explanation:
Given that:
There are 5 times as many boys as girls in a school.
Number of pupils in school = 810
Let,
x be the number of girls
y be the number of boys
According to given statement;
x+y=810 Eqn 1
y = 5x Eqn 2
Putting y=5x in the Eqn 1
x+5x=810
6x=810
Dividing both sides by 6

Putting x=135 in Eqn 2
y = 5(135)
y = 675
Hence,
Number of boys = 675
Step-by-step explanation:
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Answer:
B
Step-by-step explanation:
Exponents mean the base times itself
So 2^6 = 2 times itself six times
Answer:
Option D (7, -3)
Step-by-step explanation:
We know that the general equation of an ellipse has the form:

Where the point (h, k) are the coordinates of the center of the ellipse
In this case the equation of the ellipse is:

Then

So The coordinates of the center of the ellipse are (7, -3)
The general equation for this is d = s*t. d = distance flown, s = speed that the airplane travels, and t = time. So for this particular probelm you would use
d = 20*s