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Anestetic [448]
3 years ago
15

Alfie wants to buy a computer. The price of a basic computer is £400 The price of a better computer is £490 Alfie thinks that th

e better computer will cost him 20% more than the basic computer. Show whether or not he is correct.
Mathematics
1 answer:
MrRa [10]3 years ago
8 0

Answer: He is not correct

Step-by-step explanation:

Well to determine whether he is correct find 20% of the basic computer computer and add it to its price to determine if it equals 490 euros

20% * 400 = 80

Now add 80 to 400 to see if it equals 490

400 + 80 = 480

480 ≠ 490  

He is wrong

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Step-by-step explanation:

8 0
2 years ago
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The amount that two groups of students spent on snacks in one day is shown in the dot plots below. Which statements about the me
RUDIKE [14]

Answer:

  • The mean for Group A is less than the mean for Group B.
  • The median for Group A is less than the median for Group B.
  • The mode for Group A is less than the mode for Group B.

Step-by-step explanation:

First, we can find the measures of center for each group.

<u>Group A</u>

Mode: 1

Median: (1 + 2) / 2 = 3 / 2 = 1.5

Mean: (1 * 5 + 2 * 4 + 3) / 10 = (5 + 8 + 3) / 10 = 16 / 10 = 1.6

<u>Group B</u>

Mode: 3

Median: 92 + 3) / 2 = 5 / 2 = 2.5

Mean: (1 * 3 + 2 * 2 + 3 * 4 + 5) / 10 = (3 + 4 + 12 + 5) / 10 = 24 / 10 = 2.4

From here, we can see that...

  • The mean for Group A is less than the mean for Group B.
  • The median for Group A is less than the median for Group B.
  • The mode for Group A is less than the mode for Group B.

Hope this helps!

8 0
3 years ago
In the Exercises below, find the scale factor. Then list all pairs of congruent angles and write the ratios of the corresponding
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Answer:

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2 years ago
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Answer:

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Slope of the line perpendicular to this line = m₂

m₁ *m₂ = -1

m₂ = -1 *2/1 = -2

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y- y₁ = m(x-x₁)

y - 3 = -2(x - 1)

y - 3 = -2x + 2

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y = -2x + 5

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