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3 years ago

Solve 2 2/5 - 1 1/2 .

Mathematics

1 answer:

vova2212 [387]3 years ago

4 0

Answer:

9/10

Step-by-step explanation:

2 2/5 - 1 1/2

Get a common denominator of 10

2 2/5 *2/2 = 2 4/10

1 1/2 *5/5 = 1 5/10

2 4/10 - 1 5/10

Borrow from the 2 as 10/10

1 + 10/10 +4/10 - 1 5/10

1 14/10 - 1 5/10

9/10

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Elodia [21]

Answer:

B (Y, N, N)

Step-by-step explanation:

a) y = 1/3x, so each value satisfies it. This is true.

b) If "a" is "Y" then b has to be no

c) 1 * 11 = 11

2 * 2 = 22

3 * 5 = 15

The last equation does not follow the rules for the previous two equations, so it is no.

Thus, the answer is B (Y, N, N)

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3 years ago

The age of trees in a forest is known to be approximately normal with an average age of 40 years and a standard

juin [17]

Answer:

B -o.60

Step-by-step explanation:

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3 years ago

The salary scale for a senior officer starts at N57000

katrin [286]

Answer:

N1,052,800.

Step-by-step explanation:

The starting salary of the officer = N57,000

Increase per annum =N2,800

The given pattern forms an arithmetic sequence since the annual salary increases by a fixed amount.

We are to determine the total amount of money that the officer will earn in 14 years.

Sum of an arithmetic sequence, $S_n=\frac{n}{2}[2a+(n-1)d]$ ,where: \left\{\begin{array}{lll}$First term, a=57,000\\$Common difference, d=2,800\\$Number of terms, n=14\end{array}\right$

$S_{14}=\frac{14}{2}[2(57,000)+(14-1)(2,800)]\\=7[114,000+13*2800]\\=7[150,400]\\=1,052,800$

At the end of 14 years, the total amount earned by the officer will be N1,052,800.

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3 years ago

What is 3425030 in scientific notation

dem82 [27]

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Answer:

........................

Step-by-step explanation:

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