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Tomtit [17]
2 years ago
6

Assume your friend just took an exam made up of 20 true/false questions. further assume that your friend had no knowledge releva

nt to the questions, and consequently just guessed the answer to each question what is the probability your friend will pass the exam?
Mathematics
1 answer:
leonid [27]2 years ago
8 0

Answer:

10/20 or 1/2 it is 50% chance that she pass and 50% that she fail

Step-by-step explanation:

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WILL GIVE BRANLIEST JUST SOLVE FOR X IN 4X+7
Nostrana [21]

Answer:

-7/4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve by the matrix method , x+y/5 -1=y-x​
PIT_PIT [208]

10x - 4y = 5 (if it requires shorten)

Step-by-step explanation:

x + y/5 - 1 = y - x

<=> (5x + y - 1.5)/5 = 5(y - x)/5

<=> 5x + y - 5 = 5y - 5x

<=> 5x + 5x + y - 5y = 5

<=> 10x - 4y = 5

6 0
3 years ago
Which is a factor of each term of the polynomial?<br><br> (3d2 – 10d)
nydimaria [60]

Answer:

d(3d-10)

Step-by-step explanation:

You pull out the common factor of d from both terms, and group the remaining terms inside a parenthesis.

8 0
3 years ago
At a certain toy store, tiny stuffed zebras cost $3 and giant stuffed zebras cost $14. The store doesn't sell any
stepan [7]

Answer:

<h2><em><u>60</u></em></h2>

Step-by-step explanation:

tiny stuffed zebras(tsz)= $3

giant stuffed zebras(gsz)=$14

total sold=$208

208÷3=69.3recurring so that's incorrect as you cannot sell .3 of a zebra so keep going until you find the next whole number. (trial and error)

207÷3=69 but it cant be this as it is not the whole money made

208-14=194

194÷3=64.6recurring (cannot be this)

194-14=180

180÷3= 60 = answer as 60 tsz is $180 and add that to 2 gsz and that totals to 208 which is the total

3 0
3 years ago
Help please I'm trying to graduate (Only #3)
lesya [120]
The pieces shown are like all of 8 slices of a pizza.

the area of cirlce = area of the rectangle formed by rearranging the pizza slices.
 = (pi*r)*r
5 0
3 years ago
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