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alexandr402 [8]
3 years ago
12

3.8,4.2,5.3,x; mean 4.8

Mathematics
2 answers:
jenyasd209 [6]3 years ago
6 0
Hello!

I would assume we are solving for x, so lets try to understand what we need to do here.

to find the mean, you add all the numbers together and divide by how many number sets there are.

so in this case: (3.8+4.2+5.3+x)/4

so what I did, was go in reverse

(4.8*4)-3.8-4.2-5.3=5.9

so x must be 5.9

I hope this helps, and have a nice day!
Free_Kalibri [48]3 years ago
3 0

Answer: 5.9

Step-by-step explanation:

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Maryanne went to lunch with a friend. The bill was $35.60 before tax. Sales tax rate is 7.25%, and she
Stolb23 [73]

Answer:

$43.91

Step-by-step explanation:

Calculating Total Cost. Multiply the cost of an item or service by the sales tax in order to find out the total cost. The equation looks like this: Item or service cost x sales tax (in decimal form) = total sales tax. Add the total sales tax to the Item or service cost to get your total cost.

$35.60 + $2.58 (tax) = $38.18

$38.18+ $5.73 (tip at 15%) = $43.91 total

hope this helps you!

4 0
2 years ago
7x - 2(3x + 16) = -23
valentinak56 [21]
X=9 Combine like terms, Move constant, then calculate.
4 0
3 years ago
Read 2 more answers
99999999999999999+99999999999999
lina2011 [118]

Answer:

1.001e+17

Step-by-step explanation:

8 0
2 years ago
Kamila buys a notebook for $1.59 and pens for $0.29 each. She spends $5.07.
emmasim [6.3K]

Answer:

12 pens

Step-by-step explanation:

Let the variable that can be used to determine the number of pens that Kamila bought be represented by n.

Price of a notebook = $1.59

Price a pen = $0.29

Total amount spent = $5.07

But,

1.59 + 0.29 n = 5.07

So that,

0.29 n = 5.07 - 1.59

0.29 n  = 3.48

n = \frac{3.48}{0.29}

  = 12

Therefore, Kamila bought 12 pens.

6 0
3 years ago
Please help thanks!!!
tankabanditka [31]

Answer:

30 or 780 is your answer for the first one. i dont know how to work out the answer for the 2 one im sorry :(

Step-by-step explanation:

13+12+5 = 30

13 x 12 x 5 = 780

I would go for 780

it seems more like to be the answer

5 0
3 years ago
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