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galben [10]
3 years ago
15

Can someone answer this pls

Mathematics
1 answer:
pashok25 [27]3 years ago
7 0
The first should be 80 the second part of it should be 210 idk if thats completely right sorry if I'm wrong i hope i helped a little
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Mr. K's math class is 14 hours long. After working problems on the board for 45 minutes (hour), he gave the students the rest of
lutik1710 [3]
If this question is typed correctly then the answer would be 13 hours and 15 minutes
5 0
2 years ago
Consider two events such that P(A)=3/4, P(B)=2/5 and P(AnB)=1/3. Are the events A and B independent?
posledela

If P(A) times P(B) is equal to P(A n B), then that shows the events are independent. Otherwise, they are dependent. When I write "A n B", I mean "A intersect B". The intersect symbol looks similar to the lowercase letter n.

P(A)*P(B) = (3/4)*(2/5) = (3*2)/(4*5) = 6/20 = 3/10

Since that result is not the same as P(A n B) = 1/3, this means that the events are not independent. They are dependent events. The answer is choice D

6 0
3 years ago
Evaluate the expression.
son4ous [18]

Answer:

C

Step-by-step explanation:

at least two have to be in the same place (i think), and that’s the only one that does that

5 0
3 years ago
Read 2 more answers
Raven loved her new book. She read for 1.25 hours on friday. On saturday she read for 1.75 hours. Then on sunday she read less t
mel-nik [20]

If Raven read 1.25 hours on Friday, and 1.75 hours on Saturday, but read less on Sunday but more than on Friday. That only means that the probability number of hours Raven read on Sunday is 1.5 hours as it is less than 1.75 hours on Saturday but more than 1.25 hours on Friday.

4 0
3 years ago
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The remains of an ancient ball court include a rectangular playing alley with a perimeter of about 18m. The length of the alley
mariarad [96]

Given:

Perimeter = 18 m

The formula for the perimeter of a rectangle is:

P=2l+2w

Where:

l = lenght

w = width

In this case, we have that:

l = 2w

Therefore, we substitute the values in the formula:

\begin{gathered} P=2l+2w \\ 18=2(2w)+2w \end{gathered}

And solve for w:

\begin{gathered} 18=4w+2w \\ 18=6w \\ \frac{18}{6}=\frac{6w}{6} \\ w=3 \end{gathered}

For the length:

l=2w=2(3)=6

Answer:

The width is 3 m

The length is 6 m

3 0
1 year ago
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