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kotegsom [21]
3 years ago
13

–2 + (–9) Adding negative numbers

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0
-11
Explanation: when adding to negative numbers together you add them like regular numbers just add a negative before the number like -2+(-4)=-6
yKpoI14uk [10]3 years ago
6 0

Answer:

-11

Step-by-step explanation:

adding two negative integers makes the answers negative too. when adding 2 negative integers, add them like normal addition and then put the negative sign.

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Your friend, Susannah, manages a sandwich shop. She collects data on the number of turkey sandwiches sold per day for a week. Ex
ExtremeBDS [4]

Susannah's data are illustration of measure of central tendencies

<u>(a) The mean</u>

To calculate the mean, she needs to divide the total number of turkey sandwiches sold, by the number of days.

The total is:

\mathbf{Total = 73 +88+85+88+99+134+129}

\mathbf{Total = 696}

The number of days is:

\mathbf{Day = 7}

So, the mean is:

\mathbf{Mean =\frac{Total}{Days}}

\mathbf{Mean =\frac{696}{7}}

\mathbf{Mean =99.4}

Hence, the mean number of turkey sandwiches sold is 99.4

<u>(b) The median</u>

To calculate the median, she needs to arrange the data in ascending or descending order, then select the middle item.

In ascending order, we have: 73, 85, 88, 88, 99, 129, 134

The middle item is 88

So:

\mathbf{Median = 88}

Hence, the median number of turkey sandwiches sold is 88

<u>(c) The mode</u>

This is the data that occurs most.

From the dataset, 88 appears twice (more than others).

So:

\mathbf{Mode = 88}

Hence, the mode number of turkey sandwiches sold is 88

<u>(d) The range</u>

This is the difference between the highest and least data

From the dataset,

The highest is 134, and the least is 73

So:

\mathbf{Range =134 - 73}

\mathbf{Range =61}

Hence, the range of turkey sandwiches sold is 61

The measure that would be most helpful is the median, because it is not affected by outliers.

Read more about measures of central tendencies at:

brainly.com/question/5495004

6 0
3 years ago
Marylou is blowing up a beach ball. The package says that the ball has a diameter of 12 inches. What is the volume of the beach
Pavlova-9 [17]

Answer:

Volume of a circle = approximatley 25.12

Step-by-step explanation:

1. Volume of a circle= 4/3*pi*radius

2. Radius equals 1/2 of diameter

3. 12/2=6

4. radius=6

5. 4/3*3.14*6=25.12

6. Volume of a circle = approximatley 25.12

5 0
3 years ago
There are 40% more black balls than white balls in a bag.
Paladinen [302]
There is no answer to this question.

4 0
3 years ago
3=4x+8y i need help​
Daniel [21]
The answer would be if you were solving for y. Y= 1/2x+3/8
6 0
3 years ago
NEED ANSWERED ASAP!
svetlana [45]

Answer:

a- reflection across y axis

b-rotation

c- reflect over y then x axis

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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