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Andru [333]
3 years ago
12

12.5,−10,−7.5,x; The mean is 11.5.

Mathematics
1 answer:
Stella [2.4K]3 years ago
5 0

Answer:

x = 51

Step-by-step explanation:

the mean is calculated as

mean = \frac{sum}{count}

here mean = 11.5 , then

\frac{12.5-10-7.5 +x}{4} = 11.5 ( multiply both sides by 4 to clear the fraction )

- 5 + x = 46 ( add 5 to both sides )

x = 51

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model the scenario with an inequality statement. Shirts are $12 each and Mary has no more than $48 to spend. How many shirts can
aksik [14]

Answer:

12 x ≤ 48

Step-by-step explanation:

This inequality must have two sides, one that shows the expenditure Mary will do in function on the number of shirts (x) and other that shows the maximum money she can spend (48).

Her expenditure will depend on the shirts purchased (x) and as each shirt costs $12 the expenditure will be 12x. So, this expenditure MUST be equal or less to the maximum she can pay: $48.

The inequality will be:

12 x ≤ 48

This is the first of the options posted. From the others, none of them work.

3 0
3 years ago
A barbecue sold 26 hamburgers and hot dogs. Hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. If the barbecue mad
Angelina_Jolie [31]

x => Hamburgers

y => Hot dogs


x + y = 26

3.5x + 2y = 70


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3.5x + 2y = 70

-----------------------

1.5x = 18

x = 18 / 1.5 = 12

y = 26 - 12 = 14


They sold 12 hamburgers and 14 hot dogs

7 0
4 years ago
If f(x)=x/2-2and g(x)=2x^2+x-3 find (f+g) (x)
olya-2409 [2.1K]

Answer:

C   2x^2 + 3/2x -5

Step-by-step explanation:

f(x)=x/2-2

g(x)=2x^2+x-3

(f+g) (x)=x/2-2+2x^2+x-3

Combine like terms

           2x^2 + 3/2x -5

4 0
4 years ago
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Ludmilka [50]

Answer:

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Step-by-step explanation:

the answer is 5.5

7 0
3 years ago
Read 2 more answers
5-4x = y Given x = 3
seraphim [82]
Y=-7
I upload a picture of my work
Hope this helps

3 0
3 years ago
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