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ExtremeBDS [4]
3 years ago
14

What is the mean of -9,-5,-4,-4,-2,0,1,2,3,5

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0

Answer: - 1.3

Step-by-step explanation: I believe that it's -1.3 if you're referring to the arithmetic mean.

(1) Take the sum of -9, -5, -4, -4, -2, 0, 1, 2, 3, 5 and simplify it to -13

(2) Count the number of terms in the data set.

{-9, -5, -4, -4, -2, 0, 1, 2, 3, 5}

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10} - The number of terms in the data set is <u>10.</u>  

(3) Divide the sum by the number of terms and simplify.

-13 / 10 = -1.3 (simplified)

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Which one is it A. B. C. or D.
nadya68 [22]
7x + 2y = 2
2x - y = 10

2y = - 7x + 2
- y = - 2x + 10

2y = -7x + 2
y = 2x - 10

y=\frac{-7x+2}{2}
y= 2x - 10

y = -3.5x + 1
y =  2x - 10

Now, let's find "x" first by doing a substituion !

2x - 10 = - 3.5x + 1
y = 2x - 10

2x + 3.5x = 1 + 10
y = 2x - 10

5.5x = 11
y= 2x - 10

x =  \frac{11}{5.5}=2
y= 2*2 - 10 = 4 - 10 = -6

In short, the answer would be : y = -6 (Option B).

Hope this helps !

Photon



8 0
3 years ago
If 6 burgers cost $7.74 how many can you buy for $19.35
xeze [42]

Answer:

15 burgers!

Step-by-step explanation:

The trick is to get rid of the decimal point from the number we are dividing by.

How? We can "shift the decimal point" out of the way by multiplying by 10, as many times as we need to.

But we must do the same thing to both numbers in the division.

Example: 15 divided by 0.2

Let us multiply the 0.2 by 10, which shifts the decimal point out of the way:

0.2 × 10 = 2

But we must also do it to the 15:

15 × 10 = 150

So 15 ÷ 0.2 has become 150 ÷ 2 (they are both 10 times larger):

150 ÷ 2 = 75

And so the answer is:

15 ÷ 0.2 = 75

6 0
2 years ago
Can you guys help me on this math problem
Margarita [4]
I think 47 but i might b wrong lol
5 0
2 years ago
Please help me with this question
ExtremeBDS [4]

Answer:

384 Cubic Inches

Step-by-step explanation:

We can divide the original object into two separate shapes, then we can take the first shape of 6*4*2, and find its volume of 48, then we can take the larger object of 12 * 14 * 2 and find its volume of 336 and add the two values together to find the original shape's volume of 384 Cubic Inches.

8 0
3 years ago
Help me with this!! Will mark Brainliest
Basile [38]

Answer:

JL is not congruent to KM

Step-by-step explanation:

The length of JL is 23-21 = 2.

The length of KM is 25-22 = 3

So, because the lengths are not equal,

JL is not congruent to KM

4 0
3 years ago
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