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Mamont248 [21]
3 years ago
7

A quiz consists of 770 true or false questions. If the student guesses on each question, what is the mean number of correct answ

ers?​
Mathematics
2 answers:
Svet_ta [14]3 years ago
7 0

Answer: you have a 50/50 chance of getting it right, so basically the number would be 385. half of 770 is 385.

Step-by-step explanation: im built different

amid [387]3 years ago
5 0
385 or 1/2 i suppose
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Can someone solve this?
inn [45]

Answer:

1. 15 degrees.

2. 90 degrees.

3. 66 degrees.

Step-by-step explanation:

M and 2 appear to be 90 degrees. This is because there are parallel sides on the left and right of the kite. So, 2 is 90 degrees.

E and 75 are corresponding (I don't remember the postulate or whatnot) so 90 degrees plus 75 degrees is 165 degrees. There are 180 degrees in a triangle, so 180 minus 165 is 15. 1 Has to be 15 degrees.

3 is 66 degrees since it is corresponding with the angle on the other side of T (I, once again, do not remember the postulate).

6 0
2 years ago
The original price of a bike is $340. The store offers a discount of 20% off the original price. A customer has a coupon for an
FinnZ [79.3K]

Answer:

$450

explanation:

I think that's the answer

3 0
3 years ago
If you can buy 1/3 of a box of chocolates for 6 dollars, how much can you purchase for 4 dollars
zysi [14]

Answer:

2/9

Step-by-step explanation:

Since 1/3 of a box of chocolates costs 6 dollars, you can buy (4×(1/3))/6=2/9 of a box of chocolates!

7 0
3 years ago
Which answer best describes the solution to the equation
SCORPION-xisa [38]
4 + 5z = 5z + 4 is an identity and is true for all values of z.

The equation has, therefore, infinitely many solutions.
3 0
3 years ago
Read 2 more answers
PLEASE HELP NOW!!!!!!!!!!!!!!!!!!!
Dahasolnce [82]

Answer:

8 + k² - 6 > 8(k + 2) - 4k when k = 7

Step-by-step explanation:

8 + k² - 6 = 8 + 7² - 6 = 51

8(k + 2) - 4k = 8(7 + 2) - 4(7) = 8(9) - 28 = 44

8 + k² - 6 > 8(k + 2) - 4k when k = 7

8 0
2 years ago
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