Answer:
r = 4 3/8
Step-by-step explanation:
The score in the second exam is 94.
Given:
Score in the first exam = 86
Mean score of two exams = 90
We have to find the score of second exam.
Let the score of second exam be x.
We know, mean is given by:
⇒ Mean = (Total score in all the exams) / (Total number of exams)
Here,
Total score in all the exams = 86 + x
Total number of exams = 2
Mean = 90 (given)
⇒ 90 = (86 + x)/2
⇒ 90 × 2 = 86 + x
⇒ 180 = 86 + x
⇒ x = 180 - 86
⇒ x = 94
Therefore, the score in the second exam is 94.
Learn more about the Mean here: brainly.com/question/15823385
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~But please help, and say which one goes to which blank. Thank you. :)
Answer:
62 2/5
Step-by-step explanation:
62 is just the whole number and then you have 4 tenths, which is 4/10 which can be simplified to 2/5, so it's 62 2/5
4/9 7/15
Answer:
20/45 & 21/45
Step-by-step explanation:
Find a common denominator. What you do to the denominator, you do to the numerator. In this case, the smallest denominator is 45.
(4/9)(5/5) = 20/45
(7/15)(3/3) = 21/45
The two fractions you have is:
20/45 for 4/9
21/45 for 7/15
~
Answer:
20/45 for 4/9 and 21/45 for 7/15
Step-by-step explanation:
The least common denominator of 4/9 is 20/45.
The least common denominator of 7/15 is 21/45.