Answer:
126 groups
Step-by-step explanation:
we know that
This is a combination problem, because the order doesn't matter. He has 9 toys and wants to know the number of different combinations of 5 he can take.
The formula for the number of possible combinations of r objects from a set of n objects is given by
In this problem we have
substitute
Answer:
I believe its a recurring fraction
Step-by-step explanation:
I'm too good
Answer:
<h2>x = - 1.106</h2>
Step-by-step explanation:
0.3(10-5x)=31.5(8x+9)
<u>Expand the terms in the bracket</u>
That's
3 - 1.5x = 252x + 283.5
<u>Subtract 3 from both sides</u>
3-3 - 1.5x = 252x + 283.5 - 3
-1.5x = 252x + 280.5
<u>Subtract 252x from both sides</u>
That's
- 1.5x - 252x = 252x - 252x + 280.5
- 253.5x = 280.5
<u>Divide both sides by -253.5</u>
We have the final answer as
x = - 1.106
Hope this helps you
This problem requires a system of equations.
Let x be the length and y be the width.
xy = 980 x = 5y
Substitute 5y for x.
5y(y) = 980
5y² = 980
y² = 980/5
y² = 196
y = √196
y = 14 feet
Substitute 14 for y.
x = 5y
x = 5(14)
x = 70 feet
The length is 70 feet.
