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3 years ago

For the set A=

Mathematics

1 answer:

umka2103 [35]3 years ago

7 0

Answer:

a) A = {-3, -2, -1}

b) n(A) = 3

c) A is finite

Step-by-step explanation:

a) The elements of A are the integers between -4 and 0, not including those values. Those integers are -3, -2, -1, so those are the elements of set A.

A = {-3, -2, -1}

b) n(A) is the number of elements in set A. Obviously, there are 3:

n(A) = 3

c) Since n(A) is not "infinity", the set A is finite.

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Andreas93 [3]

Answer:

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Step-by-step explanation:

1. Multiply the equations to have the same coefficients

5(6x + 6y = 7.5) → 30x + 30y = 37.5

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2. Subtract the equations

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3. Solve for y by dividing both sides by 15

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4. Plug in 0.75 for y into one of the equations

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3 years ago

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DENIUS [597]

Answer:

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Step-by-step explanation:

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3 years ago

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alina1380 [7]

Answer:

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Step-by-step explanation:

We are given

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<h3>Morgan invested for 17 years</h3>

Solution:

From given,

Principal = $ 50, 000

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Rate of interest = 15 %

Number of years = ?

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Interest amount = 177, 500 - 50, 000

Interest amount = 127500

Use the formula,

$Interest = \frac{p \times n \times r}{100}\\\\127500 = \frac{ 50000 \times n \times 15}{100}\\\\127500 = 500 \times 15 \times n\\\\75n = 1275\\\\n = 17$

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