Yani has a box of pencils: 5 pencils are green, 12 are brown, 6 are yellow, and 4 are blue. If he selects a pencil at random, wh
1 answer:
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BC = 6 km
<u>/</u><u> </u> ACB = 34°
AC = ?
cos 34° =
=> 0.829 =
=> AC =
=> AC = 7.23763570567
=> AC = 7 km
=> AC = 10 km (nearest tenth)
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Answer:
43 questions in total
Step-by-step explanation:
the original equation with the unknown (total number of questions on the test) will look like this
we know this because to work out a percentage in the 1st place you need the total ÷ number (in this case it's ÷ how many questions out of the total she did answer)
now you rearrange.
you need to move the 24 to get the total on it's own here's how you do it
what you do to one side of equation you have to do to the other. the 24 and 24 on the left will cancel because 24÷24=1 and we don't write
got mum of Q's x 1= 80 x 24
now you convert % to decimal
replace
now you take the original and + the 19
therefore there are a total of 43 questions on the exam
Answer:
35 quizzes
Step-by-step explanation:
We need to determine how many ways we can choose 4 questions out of 7 to make the quizzes.
We do this by using the formula which describes the number of ways we can choose
objects given
possible choices. So, if
and
, then:
Hence, the teacher can make 35 different geometry quizzes.