√
6
⋅
√
15
=
3
√
10
Explanation: By radical laws,
√
a
⋅
√
b
=
√
a
b
.
Using this law:
√6⋅√15
=√90
√90 has 9, a perfect square, as one of its factors, so it can be simplified.
√90
=√9⋅10
=√9⋅√10
=3√10
Answer:
11
Step-by-step explanation:
she divides the number of pencils equally
so the number of pencils per student is 152/13
which is 11.692...
but she can't give 0.69 of a pencil so she gives only the whole part 11
and she keeps 9 pencils
Answer:
it's c
Step-by-step explanation:
x represents boxes 13 is the cookies in it 13x means 13 times x(amount of boxes) (example: 2 boxes is 13 times 2 to get total number of boxes ) and minus 26 because 2 boxes is 13(2) x equals 2 to get 26 and she keeps 26 to herself (aka 2 box) so it's c