Expanded form: 0.1+ 0.07
Expanded factors form: (1*0.1)+(7*0.01)
Expanded exponential form: (1*10 to the power of -1)+(7* 10 to the power of -2)
Remember: *=x
Answer:
104 tests is 65% of 169 tests and 16% of 275 cookies is 44 cookies
Step-by-step explanation:
You set up the fractions and cross multiply
Answer:
same
Step-by-step explanation:
hope this helps
Answer:
associative property of multiplication
Step-by-step explanation:
Associative property of multiplication states that (a x b) x c = a x (b x c).
5 * (sqrt(9) *4) = (5* sqrt(9) ) *4
Answer:
Carter family = 25 hours
Davis family = 31 hours
Step-by-step explanation:
Let's say the number of hours the Carter family used their sprinkler is x and the number of hours the Davis family used their sprinkler for is y.
So combined:
x + y = 45 hours
and we are also told that:
40x + 15y = 1300 L
So we can do simultaneous equations to solve the problem.
With some rearranging, we can figure out that:
y= 45 - x
and by substituting that into the second equation:
40x + 15 (45 -x) = 40x + 675 - 15x = 1300L
25x = 1300 - 675
25x = 625
x = 25 = hours that the Carter family used their sprinkler
and we can substitute that back into the original equation to find how many hours the Davis family used their sprinkler so:
25 + y = 56
y = 31
The Davis family used their sprinkler for 31 hours whilst the Carter family used their sprinkler for 25 hours.