Given that t<span>he
science department buys the equipment shown in the table below.
Item Time Bought
Microscopes every 5 years
Safety goggles every 4 years
Test tubes every 2 years
Given that they bought
all three items this year. The number of years it will take for them to buy all
three items again in the same year is given by the LCM of 5, 4, and 2.
5 = 1 x 5
4 = 1 x 2 x 2
2 = 1 x 2
LCM = 1 x 2 x 2 x 5 = 20.
Therefore, they will buy all three items again in 20 years.
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Answer:
11
Step-by-step explanation:
44 divided by 4=11
55 divided by 5=11
I am an expert
Step-by-step explanation:
Given
Maria goal's is to Jog 17.4 miles
She runs 2.75 miles each day for 7 days
Total distance covered by her in 7 days

So, she covers more than what she had planned.
Therefore, she is successful in her plan.
Answer: The value of n is 321.
Step-by-step explanation:
Since we have given that
Sample size = 321
Percentage of them developed headaches = 7%
So, the value of p would be

Now, the value of q would be

And the mean for the number of subjects who develop headaches would be

and the standard deviation would be

Hence, the value of n is 321.
Answer:
D
Step-by-step explanation:
Cuz sqr root of 20 = 2 sqrt 5, -2 sqrt 5