A joint relative frequency is found by dividing a frequency that is not in the Total row or the Total column by the frequency’s row total or column total.
10.50/5=2.10
2.10*4=8.40
She used to earn $8.50/hr
Answer:
8.5%
Step-by-step explanation:
8.50% of 52= 4.42
Answer: The piano has 222 strings, because 37×6=222.
Step-by-step explanation:
Since we are informed that Leslie tuned a guitar with 6 strings today and that she then tuned a piano with 37 times as many strings.
This simply means that we have to multiply 37 by 6 strings to get the value of the strings of the piano that she tuned. This will be:
= 6 × 37
= 222 strings.
Leslie tuned 222 strings.
Therefore, the piano has 222 strings, because 37×6=222.
Answer:
Step-by-step explanation:
x²+6x+9=(x+3)²
