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Oxana [17]
3 years ago
14

after spending 7/9 of a three hours examination, a student left the exams hall. How many minutes has he to complete the duration

of the examination.​
Mathematics
1 answer:
Montano1993 [528]3 years ago
6 0
40 mins left! total time= 60 mins x 3 hours =180 mins. 180 divided by 9 is 20. 20 times 7 is 140. 180-140 equals 40. yay!
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3) -5
xxMikexx [17]

Answer:

Constant monomial

Step-by-step explanation:

Monomial means that there is only one term, so constant trinomial cannot be correct.

Quintic monomials have a degree of 5 and quadratic monomials have a degree of 4, but this has a degree of zero, so this must be a constant monomial.

I hope this helps you. Have a nice day.

8 0
3 years ago
The actual distance between two villages is 120 km. On a map of the area, 0.5 cm represents 2 km. What is the actual distance be
otez555 [7]
If .5cm is 2km, then 1 cm is 4 km, and therefore 120/4 is 30, so 30 centimeters on the map
6 0
3 years ago
Read 2 more answers
Which expression is equal to (−8−3i)+(3+4i)? A. −4 B. −11+7i C. −5+i D. 4
irakobra [83]

-8 +3 =-5

-3i+4i =i

Final answer is -5+i

6 0
4 years ago
Read 2 more answers
Can anybody explain how I answer this question I really don't get trig equations ​
nasty-shy [4]

SinØ(TanØ+2)=3cosØ -----[pulling like terms out]

for the following steps The easiest 4 me is that I just plug in values between 0° and 180° for Ø and see which will help me to get equal numbers on both sides.

So, for instance if you use Ø=90°, you'll get the following, Sin90(Tan90+2)=3cos90

========> 1(1+2)=3(1) ==> 3=3

so 90° is one of the solutions ur looking for.

hope this was helpful

6 0
3 years ago
HELP!!!! Divide. Write your answer in lowest terms as a proper or improper fraction (not a mixed number). 11/21 divided by 22/7
vodomira [7]
My answer is 1/6. Here's How I worked it out:

11/21 / 22/7 is the same as or = to 11/21 * 7/22 which = 77/462 and then divide both the numerator and denominator by 77 and you get 1/6. (In other words simplify 77/462). Hope this helped :) 
8 0
4 years ago
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