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3 years ago

I don't get it- someone answer this, please.

Mathematics

2 answers:

yanalaym [24]3 years ago

8 0

Answer:

Use 19, and subtract each number. For example, if it is 15, you do 19 - 15, but if it is over 19, like 24, do 24 - 19. Do this to all the numbers and add them up, thats your mad.

Step-by-step explanation:

creativ13 [48]3 years ago

7 0

Answer:

1.6

Step-by-step explanation:

The Mean Absolute Deviation (MAD) is the distance each number is away from the mean divided by the amount of numbers.

15 is 4 away from 19, for example

So:

19 - 15 = 4

25 - 19 = 6

19 - 13 = 6

19 - 15 = 4

19 - 18 = 1

20 - 19 = 1

22 - 19 = 3

24 - 19 = 5

4 + 6 + 6 + 4 + 1 + 1 + 3 + 5 = 30

30/19 = 1.5789, rounded to 1.6

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Your family goes to a Southern-style restaurant for dinner. There are 6 people in your family.

Viktor [21]

Answer:

Number of people who order chicken dinner = 1

Number of people who order the steak dinner = 5

Step-by-step explanation:

Let

x = number of people who order chicken dinner

y = number of people who order the steak dinner

x + y = 6 (1)

14x + 17y = 99 (2)

From (1)

x = 6 - y

Substitute into (2)

14x + 17y = 99 (2)

14(6 - y) + 17y = 99

84 - 14y + 17y = 99

- 14y + 17y = 99 - 84

3y = 15

y = 15/3

y = 5

Substitute y = 5 into (1)

x + y = 6 (1)

x + 5 = 6

x = 6 - 5

x = 1

Number of people who order chicken dinner = 1

Number of people who order the steak dinner = 5

4 0

3 years ago

3. Solve using mental math. 4y + 3 = 19 04 05 05.5 064

damaskus [11]

Answer:s

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

the length of a rectangle is four times its width. the rectangle has an area of 1024cm. work out the width of the rectangle

True [87]

The width of the rectangle is 16cm and here are the steps :)

6 0

3 years ago

Evaluate the expression 2(2-y)-x When y = 8 and x = -3, what is the value of the expression?

Nesterboy [21]

Answer:

-9

Step-by-step explanation:

y = 8

x = -3

2(2-y)-x = ⇒ replace x and y with their values
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2(-6) + 3 = ⇒ multiply
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3 0

3 years ago

Read 2 more answers

Copy and complete. PLEASE SOLVE IT FAST thanks

Setler79 [48]

Answer:

(a) Increased by 100%

(b) Increased by 50%

(c) Decreased by 33.33%

(d) Decreased by 50%

(e) Increased by 200%

(f) Decreased by 66.67%

Step-by-step explanation:

In this question, we can use the following formula:

$\text{Percentage Change =} \dfrac{\text{New value - Old Value}}{\text{Old Value}} \times 100$

Positive value of percentage change means increase and

Negative value of percentage change means decrease.

Solution a)

Old Value = 1

New Value = 2

$\text{Percentage Change =} \dfrac{\text{2 - 1}}{\text{1}} \times 100\\\Rightarrow 100\%$

Increase of 100%

Solution b)

Old Value = 2

New Value = 3

$\text{Percentage Change =} \dfrac{\text{3 - 2}}{\text{2}} \times 100\\\Rightarrow 50\%$

Increase of 50%.

Solution c)

Old Value = 3

New Value = 2

$\text{Percentage Change =} \dfrac{\text{2 - 3}}{\text{3}} \times 100\\\Rightarrow -33.33\%$

Decrease of 33.33%.

Solution d)

Old Value = 2

New Value = 1

$\text{Percentage Change =} \dfrac{\text{1 - 2}}{\text{2}} \times 100\\\Rightarrow -50\%$

Decrease of 50%.

Solution e)

Old Value = 1

New Value = 3

$\text{Percentage Change =} \dfrac{\text{3 - 1}}{\text{1}} \times 100\\\Rightarrow 200\%$

Increase of 200%.

Solution f)

Old Value = 3

New Value = 1

$\text{Percentage Change =} \dfrac{\text{1 - 3}}{\text{3}} \times 100\\\Rightarrow -66.67\%$

Decrease of 66.67%.

So, the answer is:

(a) Increased by 100%

(b) Increased by 50%

(c) Decreased by 33.33%

(d) Decreased by 50%

(e) Increased by 200%

(f) Decreased by 66.67%

6 0

4 years ago