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Svetradugi [14.3K]
1 year ago
5

Translate the sentence into an equation Twice the difference of a number and 9 is equal to 5use the variable w for the unknown n

umber
Mathematics
1 answer:
TEA [102]1 year ago
3 0

Let w the unknown number. Then, you have

\begin{gathered} 2(w-9)\rightarrow\text{ Twice the difference of a number and 9} \\ 2(w-9)=5\rightarrow\text{Twice the difference of a number and 9 is equal to 5} \end{gathered}

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Can you guys help me on this
WITCHER [35]

Answer: 1/4 OR 1/8

Step-by-step explanation:

the first coin can be heads which has a 1/2 chance of happening and the other coin also has a chance to get tails which is 1/2

if you add the 1/2 and the other 1/2 you can get 1/4 OR 1/8

4 0
2 years ago
Read 2 more answers
PLSSSS HELPPPP<br>What is the value of <br><img src="https://tex.z-dn.net/?f=5%20%5Ctimes%20%7B2%7D%5E%7B3%7D%20%2B%205" id="Tex
tigry1 [53]
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4 0
2 years ago
In a certain Algebra 2 class of 30 students, 14 of them play basketball and 10 of them play baseball. There are 14 students who
Veseljchak [2.6K]

Answer:

In a certain Algebra 2 class of 30 students, 22 of them play basketball and 18 of them play baseball. There are 3 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?

I know how to calculate the probability of students play both basketball and baseball which is 1330 because 22+18+3=43 and 43−30 will give you the number of students plays both sports.

But how would you find the probability using the formula P(A∩B)=P(A)×p(B)?

Thank you for all of the help.

That formula only works if events A (play basketball) and B (play baseball) are independent, but they are not in this case, since out of the 18 players that play baseball, 13 play basketball, and hence P(A|B)=1318<2230=P(A) (in other words: one who plays basketball is less likely to play basketball as well in comparison to someone who does not play baseball, i.e. playing baseball and playing basketball are negatively (or inversely) correlated)

So: the two events are not independent, and so that formula doesn't work.

Fortunately, a formula that does work (always!) is:

P(A∪B)=P(A)+P(B)−P(A∩B)

Hence:

P(A∩B)=P(A)+P(B)−P(A∪B)=2230+1830−2730=1330

7 0
3 years ago
Jackson Middle School has 3 students in choir for every 1 student in band. If there are 52 students in band, how many students a
Monica [59]

Answer:

A. 156 students are in choir

Step-by-step explanation:

It states that for every 3 students in choir equals 1 student in band which give you the equation 1x3. So if band has 52 students then your new equation is 52x3 which is 156! Hope this helps!:)

6 0
3 years ago
Acute angle between the hours hand and the minute hand at 1pm​
Bess [88]

Answer: 30 degrees

Step-by-step explanation:

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1 min = 6 degree

and the gap of hour hand and minute hand at 1pm, is of 5 min

therefore acute angle formed is 5 X 6 = 30 degrees.

:-)

7 0
3 years ago
Read 2 more answers
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