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defon
3 years ago
14

What is the standard deviation of the data set given below? 4,7, 8, 9, 12

Mathematics
1 answer:
larisa [96]3 years ago
3 0

Answer:

I think 7

Step-by-step explanation:

4 , 8 , 9 and 12 has factors.

7 has no factor.

4= 2×2

8= 2×4

9= 3×3

12= 3×4

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Find the selling price of a $7.50 agenda book with a 15% discount.
Diano4ka-milaya [45]

Answer:

The selling price of the agenda book is $6.38 to the nearest cent.

Step-by-step explanation:

Assume that the cost price of the agenda book is 100%

∵ The discount is 15%

∵ The selling price = the cost price - discount amount

∴ The selling price = 100% - 15%

→ That means the selling price is 85% of the cost price

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∴ The selling price = 85% × 7.50

→ Change 85% to a number by divide it by 100

∴ The selling price = \frac{85}{100} × 7.50

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→ Round it to the nearest cent (2 d.p)

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8 0
3 years ago
How do I solve -12+1/2x=-6​
dedylja [7]

Answer:

x = 12

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First, eliminate the fractional coefficient 1/2, by multiplying all three terms by 2:

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6 0
2 years ago
X squared minus six x equals negative thirteen
Gelneren [198K]

Answer:

x^2 - 6x = -13

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