Answer:
75
Step-by-step explanation:
1000-250=750
750 divided by 10= 75, therefore she needs 75 trays :)
<span>
<span>
</span><span><span>
Number
Frequency <span> Probability </span>
</span>
<span>
1 4
<span> 0.13
</span>
</span>
<span>
2 6
<span> 0.20
</span>
</span>
<span>
3 5
<span> 0.17
</span>
</span>
<span>
4 7
<span> 0.23
</span>
</span>
<span>
5 3
<span> 0.10
</span>
</span>
<span>
6 5
<span> 0.17
</span></span><span>total 30<span> 1.00
</span></span></span></span><span>The best explanation of how to find the experimental probability of rolling a 3 is:
To find the experimental probability of rolling a three, write a ratio of the number of times three occurs to the total number of trials. Simplify if necessary.
5/30 = 1/6 or 0.166 or 16.6% or 17%.</span>
The third one is the answer
Part A:
C= a + bn
Make the two equations out of the words:
82 = a + b100 * 2.5 = 205 = a + b250
157 = a+ b250
Subtract the two,
205 = a + b250
- ( 157 = a + b250)
48 = a
Find b by substituting in a:
82 = a + b100
82 = 48 + b100
34 = b100
b = 0.34
Answer for part a: a = 48 , b = 0.34
Part B:
C = a +bn <- when n = 300 , put in a and b, then solve
C = 48 + 0.34(300)
C = 48 + 102
C = 150
Cost when hiring a lorry to travel 300 miles is 150 pounds
Answer:
Constant of variation: $8.25
Equation: y=8.25x
Step-by-step explanation:
231/28=8.25
