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Vikki [24]
3 years ago
6

The mean weight of the packages Joan shipped was 2.5 pounds. If Joan mailed four packages and three of them had weights of 1.8,

3.2 and 2.7 pounds, then what did the other package weigh?
2.8
2.3
3.3
Mathematics
2 answers:
victus00 [196]3 years ago
5 0
The right answer is 2.3
mrs_skeptik [129]3 years ago
3 0

Answer:

2.3 is the answer

Step-by-step explanation:

Name the unknown package n

[1.8 + 3.2 + 2.7 + n]/4 = 2.5

[7.7 + n] = 2.5 × 4

7.7 + n = 10

n = 10 - 7.7

n = 2.3

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The perimeter of a rectangle is 46 m if the with were doubled and on length were increased by 5 their perimeter would be 66 what
Kamila [148]

Answer:

18 and 5

Step-by-step explanation:

if 'x' - is the length and 'y' - the width of the rectangle, then

2(x+y)=46 - perimeter of the original rectangle and 2(2x+(y+5))=66 - the perimeter of the new rectangle.

\left \{ {{x+y=23} \atop {2x+y=28}} \right. \=> \ \left \{ {{x=5} \atop {y=18}} \right.

Finally, the length is x=5 and the width is y=18.

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3 years ago
If -2 is the root of the quadratic equation x^2-5x+c=0 <br><br>find the value of c​
GaryK [48]

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Step-by-step explanation:

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2 years ago
What is the slope of the graph? (Example: 2/3,-4,-2/9)
mart [117]

Answer:

7/9

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A family travels 989.5 miles in 17.8 hours. Estimate the number of miles they can travel in one hour.
antoniya [11.8K]
989.5 divided by 17.8 is 55.5898876404
so about 55 ish
I think that's right but I'm not sure :)

3 0
2 years ago
2x = 17 is a linear function<br> True<br> False
xz_007 [3.2K]

Answer:

False

Step-by-step explanation:

a linear function is always in the form y=(f)x=bx+a

That means that there will not be one set answer and the line can be graphed. Your question is an equation, but not a linear one because there is only one set answer which would be 17/2=8.5.

5 0
3 years ago
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