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melamori03 [73]
3 years ago
14

When x = 5, the value of the expression –2(x – 10) is

Mathematics
2 answers:
nikitadnepr [17]3 years ago
8 0

Answer:

The value of the expression at x=5 is 10

Step-by-step explanation:

The given expression is -2(x-10)

Let us simplify this expression.

Distribute -2 over the parentheses, we get

-2x+20

Now, substitute x = 5, we get

-2(5)+20

On simplifying, we get

-10+20\\=10

The value of the expression at x=5 is 10

MrMuchimi3 years ago
4 0

The given expression is

-2(x-10)

And we have to find the value of the expression when x =5

And for that, we plug 5 for x in the given expression. That is

-2(5-10)

And difference of 5 and 10 is -5. So we will get

=-2*-5 =10

So when x =5, the value of the expression is 10 .

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Mean of the first golfer = 89

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Range of the first golfer = 11

Range of the second golfer = 8

Explanation:

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Sum of the scores of first golfer = 88 + 90 + 86 + 89 + 96 + 85 = 534

Number of observation of first golfer = 6

\text {Mean} = \frac{\text {Sum of the observation}}{\text {Number of observation}}

Mean of the first golfer = \frac{534}{6}=89

Mean of the first golfer = 89

Range of the first golfer = Highest score – Lowest score

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Sum of the scores of second golfer = 91 + 86 + 88 + 84 + 90 + 83 = 522

Number of observation of second golfer = 6

\text {Mean} = \frac{\text {Sum of the observation}}{\text {Number of observation}}

Mean of the second golfer = \frac{522}{6}=87

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Range of the second golfer = Highest score – Lowest score

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Range of the second golfer = 8

Comparing the golfer's skills:

Mean of first golfer is greater than Mean of second golfer.  (i.e. 89 > 87)

Range of first golfer is greater than Range of second golfer. (i.e. 11 > 8)

Thus, first golfer have more skills than second golfer.

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