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AlladinOne [14]
2 years ago
6

Item 4 Evaluate 8x−y2−3 when x=−1/4 and y=3 .

Mathematics
2 answers:
iren2701 [21]2 years ago
8 0
8(-1/4)-(3)2-3=-2-6-3=-11
Semmy [17]2 years ago
8 0

Answer:

-14

Step-by-step explanation:

8x-y^2-3

8(-1/4)-(3)^2-3

-8/4-3*3-3

-2-9-3

-11-3

-14

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A researcher gathered data on hours of video games played by school-aged children and young adults. She collected the following
antiseptic1488 [7]

Step-by-step explanation:

The complete frequency distribution table for the data has been attached to this response.

The frequency column contains values that are the number of times the given range of hours appear in the data. For example, numbers in the range 0 - 2 hours, appear <em>9</em> times in the data. Also, the numbers in the range 3 - 5 appear  <em>6</em> times. The same logic applies to other ranges.

The relative frequency column contains the ratio of the number of times the given range of hours appear in the data, to the total number of outcomes. The total number of outcomes is the sum of all the frequencies on the frequency column. This gives 38 as shown.

So, for example, to get the relative for the numbers in the range 0-2, divide their frequency (9) by the total outcome or frequency (38). i.e

9 / 38 = 0.24

Also, to get the relative for the numbers in the range 3-5, divide their frequency (6) by the total outcome or frequency (38). i.e

6 / 38 = 0.16

Do the same for the other ranges.

5 0
3 years ago
Simplify (6 5x) (7x 3)
antiseptic1488 [7]
(6 + 5x)(7x + 3) = 42x + 18 + 35x^2 + 15x = 35x^2 + 57x + 18
3 0
3 years ago
jose has $12.80 in nickels and dimes. there are a total of 144 coins. how many nickels and dimes are there
Nastasia [14]

There are 32 nickels and 112 dimes. Hope this helps.


6 0
2 years ago
A jewellery shop sells 240 items in a month, 180 was sold online the rest were sold in store. Work out the ratio of online sales
cricket20 [7]

Answer:

3 : 1

Step-by-step explanation:

180 out of 240 sold online so (240 - 18) sold in store

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Answer:

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Step-by-step explanation:

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