Answer: 6 times
Step-by-step explanation:
it is a lowest common multiple question. So we list the multiples
20 8
<u>40</u> 16
60 24
80 32
<u>40</u>
40 is our lowest common multiple. Which means every 40 minutes they flash and chime together.
so if we add 40 minutes onto 08:00 we get 08:40 and if we add it again we get 09:20 and again we get 10:00 and again we get 10:40 and again we get 11:20 and again we get 12:00. We have to stop here as if we add 40 minutes again we will go over the given time of 12:30. If we count how many times it was added. this adds to 6. therefore the answer is 6.
hope this helped.
Yes it can be. (3x-7) by (3x-7) would be one solution for the square, but (7-3x) by (7-3x) would work too.
X would have to be either -(1/3) (which couldnt happen because you cant have negative lengths) so it has to be 5
You can set this up as 5(3+4)....then, distribute by multiplying the terms in parentheses by 5. This gives you 15+20, which equals 35.
In order to solve this, we need to select the function that meets our constraints. Since x^2 - 5 occurs when x is less than 3, and the x-value we are given is -4, we use the first function.
f(-4) = (-4)^2 - 5
f(-4) = 16 - 5
f(-4) = 11
Isolate the variable by dividing each side by factors that don't contain the variable.
X=2
