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saveliy_v [14]
3 years ago
10

the science department buys the equipment shown in the table. they bought all three items this year. in how many years will they

have to buy all three items again. What was the strategy to yes to solve the problem. microscopes every 5 years , safety goggles every 4 years , test tubes every 2 years.
Mathematics
2 answers:
belka [17]3 years ago
8 0

Answer:

20 years

Step-by-step explanation:

20 is the lowest common multiple of 5,4,2

weeeeeb [17]3 years ago
4 0

Answer: the answer is in 20 years


Step-by-step explanation:

5): 5, 10, 15, [20]

4): 4, 8, 12, 16, [20]

2): 2, 4, 6, 8, 10, 12, 14, 16, 18, [20]

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Answer:

n = 16

Step-by-step explanation:

Given the expression;

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Swap'

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Hence the value of n is 16

7 0
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WHOEVER GETS RIGHT GETS BRAINLIEST!!
ozzi

Answer:

Answer B:  min. value at -6

Step-by-step explanation:

Complete the square of f(x) = x^2 - 2x - 5.

Note:  Please use " ^ " to denote exponentiation, as shown.

Start with f(x) = x^2 - 2x - 5.

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Take half of that and square your result:  (1/2)(2) = 1, and then 1^2 = 1.

Add and subtract this 1 between the 2x term and the constant term:

f(x) = x^2 - 2x    + 1   - 1  - 5

Rewrite x^2 - 2x + 1 as a perfect square:

f(x) = (x - 1)^2 - 1 - 5, or    f(x) = (x - 1)^2 - 6

Compare this to the standard form

                                        f(x) = (x - h)^2 + k

We see that h = 1 and k = -6.

The vertex is located at (h, k); here, it's located at (1, -6).

Thus, the minimum value of this function is at the vertex (1, -6).

This agrees with Answer B:  min. value at -6.

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