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snow_tiger [21]
2 years ago
10

PLS HELP a) -3*2-9 b) 2+ -4*-3

Mathematics
1 answer:
alekssr [168]2 years ago
7 0

Answer:

hope this will help you...

Step-by-step explanation:

a) - 3 \times 2 - 9 \\ solution \\  - 3 \times 2 - 9 \\  - 6 - 9 \\  - 15 \\  \\ b)2 +  - 4 \times  - 3 \\ solution \\ 2 +  - 4 \times  - 3 \\ 2 + 12  \\ 14

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I'll get you started:

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Note: q = 1 - p

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To find z-score:

z = (x - mean)/sd

Note: x = 250

Once you have the z-score, look in a z-table using the score to find your probability. Remember that the question is asking "at least 250" when looking at the table.

4 0
3 years ago
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bezimeni [28]

Answer:

Daniel (now) is 3 years old,  (2 years ago) is 1 year old.

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Now:

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4 years ago
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Each of the oranges would sell for 50 cents so 10*0.50=5 dollars
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3 years ago
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