So average is of the first 6 tests is 82 well that means
(test1 + test2+ test3+ test4 + test5+test6)/6 = 82
so now let do some cross multiplliying
test1 + test2 + test3 + test 4 + test5 +test6 = 82*6
test1 + test2 + test3 + test 4 + test5 +test6 = 492
now lets see if we can find that 7th test score
(test1 + test2 + test3 + test4 + test5 +test6 + test7)/7 = 80.5
So look we found test1 + test2 + test3 + test4 + test5 +test6 to be 492 so lets substitute.
(492 + test7 )/7 = 80.5
test7 = (80.5*7)-492 = 71.5
A. Surveying the students about their favorite type of math problem.
and
C. Sampling water for contaminants
Answer:
Step-by-step explanation:
so the least common denominator is 12, so:
multiply 3/4ab by three, which equals: 9/12ab
9/12ab-5/12ab = 4/12ab, or 1/3ab
The total number of beads that Lexi could accommodate based
on the on hand items is 101 beads. Subtract the number of beads she needs which
is 144 beads with 101 beads. The amount of beads that would need a box is 43
beads. Since a medium box could only accommodate 10 beads at a time, divide 43
with 10 and the answer would be 4 remainder 3. Thus Lexi would only need 4
medium boxes.
You would want to use the Keep, Change , Flip
method. So you keep the 1/8, change division into multiplication, the flip the 4 into 1/4.
Step-by-step explanation:
(1/8) / 4
(1/8) * (1/4)
answer: 1/32 or 0.03125
