You are right, it's C. I checked in geogebra bro/girly/dude.
Hope this helps !
Photon
Hmm, one way is this
there's 500 times 0.10 or 50 grams of salt in the water
if we want to make 50 grams=4% of everything, how much water do we need to add
50=4% of all
50=0.04 of all
divide both sides by 0.04
1250=all
so
500+what=1250
minus 500 both sides
what=750
750 grams of water
Answer:
413.126
Step-by-step explanation:
Given a normal distribution :
Mean (m) = 405
Standard deviation (s) = 19
Weight of fruit will be greater than how many grams (x) if picked 17% of the time:
P(Z > x) = 0.17 ;
The Zscore for P(Z > x) = 0.17 equals 0.954 (Z probability calculator)
Zscore = (x - m) / s
0.954 = (x - 405) / 19
0.954 * 19 = x - 405
18.126 = x - 405
x = 18.126 + 405
x = 423.126
Weight will be greater than 423.126
Answers:
- 1) 7.35
- 2) 1.13
- 3) 2.82
- 4) 8.98
- 5) 9.37
- 6) 7.80
- 7) 4.78
- 8) 9.25
- 9) 4.73
- 10) 6.78
==============================
Explanation:
The hundredth decimal place is two spots to the right of the decimal
For instance, the digit 5 is in the hundredths place for 7.3547
Since the next digit over is not 5 or larger, this means we just keep 7.35 and ignore everything else. We don't round up.
Something like 1.1295 becomes 1.12 after we drop everything after the '2', but we round up to 1.13 because of that 9 being five or larger.
The other 8 problems are handled in a similar fashion.
