Answer: The probability is 6/15 or 40%
Step-by-step explanation: In your question, you said Isabelle's book collection has 15 books and in that collect she has 6 autobiographies. So they probability as a fraction is 6/15.
The equivalent expression is b)
The second one
Answer:
, or ![29\frac{2}{3}](https://tex.z-dn.net/?f=29%5Cfrac%7B2%7D%7B3%7D)
![\mathrm{Subtract\:}2\mathrm{\:from\:both\:sides}\\6x+2-2=180-2\\6x=178](https://tex.z-dn.net/?f=%5Cmathrm%7BSubtract%5C%3A%7D2%5Cmathrm%7B%5C%3Afrom%5C%3Aboth%5C%3Asides%7D%5C%5C6x%2B2-2%3D180-2%5C%5C6x%3D178)
![\mathrm{Divide\:both\:sides\:by\:}6\\\frac{6x}{6}=\frac{178}{6}\\](https://tex.z-dn.net/?f=%5Cmathrm%7BDivide%5C%3Aboth%5C%3Asides%5C%3Aby%5C%3A%7D6%5C%5C%5Cfrac%7B6x%7D%7B6%7D%3D%5Cfrac%7B178%7D%7B6%7D%5C%5C)
![x=\frac{89}{3}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B89%7D%7B3%7D)
<em>Hope this helps and have a great day!!!</em>
Answer:
2 * 3 + 4 * 5 = 26
5 * 7 + 1 * 8 = 43
Step-by-step explanation:
Given
_ * _ + _ * _ = _ _
Required
Fill in the boxes with digits 0 to 9
From the question we understand that the result must be two digits i.e. _ _
To solve this, we'll make use of trial by error method:
Fill the first two boxes wit 2 and 3: _ * _ becomes 2 * 3
Fill the next two boxes with 4 and 5: _ * _ becomes 4 * 5
So,we have
2 * 3 + 4 * 5
6 + 20
26
Hence, the first combination is 2 * 3 + 4 * 5 = 26
Another possible combination is:
Fill the first two boxes wit 5 and 7: _ * _ becomes 5 * 7
Fill the next two boxes with 1 and 8: _ * _ becomes 1 * 8
So,we have
5 * 7 + 1 * 8
35 + 8
43
Hence, another combination is 5 * 7 + 1 * 8 = 43
<em>Note that; there are more possible combinations</em>
163 cost $144.99
211 cost ????
211 * 144.99 / 163
= 30,592.89/163
=187.68
Answer is c) $187.68