Answer:
598 books
Step-by-step explanation:
Let x be the number of books in the 3rd pile. We will have then:
1st pile: 2x + 10
2nd pile: 2x
3rd pile: x
3000 = (2x + 10) + (2x) + (x)
3000 = 5x + 10
3000 - 10 = 5x
2990 = 5x
2990/5 = x
x = 598 books in the third pile!
We can check that:
3000 = 2*598 + 10 + 2*598 + 598
3000 = 1196 + 10 + 1196 + 598
3000 = 3000 CHECK!
Answer:
12.5
Step-by-step explanation:
If the number of workers injured in each accident is i<em>ndependent </em>of the number of accidents that occur, <em>then the expected number of workers injured in a week equals the expected number of accidents per week times the expected number of workers injured in each accident.
</em>
But the expected number of workers injured in each accident is precisely the average or mean, so
<em>Expected number of workers injured in a week = 5*2.5 = 12.5.
</em>
Or in other words, in 10 weeks there will probably be 125 workers injured.
Answer:
1.27lbs of cheese.
Step-by-step explanation:
add .75 with .52 and you get 1.27lbs of cheese
Answer:
180 sq mm, 9 sq un, 8 sq un
Step-by-step explanation:
Just let every x in f(x) be g(x)
it means:
f(g(x))=(2x^2+5)^2+(2x^2+5)+2
=4x^4+20x^2+25+2x^2+5+2
=4x^4+22x^2+32
