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natali 33 [55]
3 years ago
8

Please please help me​

Mathematics
1 answer:
Ede4ka [16]3 years ago
5 0

1)3k - 2k \\  = k(3 - 2) \\  = k(1) \\  = k

2) {5x}^{2}  - 10x -  {8x}^{2}  + x \\  =  {5x}^{2}  -  {8x}^{2}  - 10x + x \\  =  - 3 {x}^{2}  - 9x \\  =  - 3x(x - 3)

3) - (m + n) + 2(m - 3n) \\  =  - m - n + 3m - 6n \\  =  - m + 2m - n - 6n \\  = m - 7n

Hope you could get an idea from here.

Doubt clarification - use comment section.

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What is the mean,median,mode,range of 0,0,1,3,3,4,5,5,7,7,7,7,7,10,18,50?
vodomira [7]
To find the median, we will list our numbers from least to greatest, and then cross out the smallest number and the biggest number.
0,0,1,3,3,4,5,5,7,7,7,7,7,10,18,50.
0,1,3,3,4,5,5,7,7,7,7,7,10,18.
1,3,3,4,5,5,7,7,7,7,7,10.
3,3,4,5,5,7,7,7,7,7.
3,4,5,5,7,7,7,7.
4,5,5,7,7,7.
5,5,7,7.
5,7.
Since we cannot find a middle number, add the last two numbers up and divide by 2.
5+7 = 12. 12/2=6.
Our median is 6.
The mean is the sum of all numbers divided by how many numbers we have.
0+0+1+3+3+4+5+5+7+7+7+7+7+10+18+50= 132.
We have 16 numbers total.
132/16 = 8.25.
Our mean is 8.25.
The mode is the number that appears the most within the given list.
7 appears the most.
Your mode is 7.
The range is the difference between the largest number and the smallest number.
Our largest number is 50 and our smallest number is 0. The difference of two numbers means to subtract. Subtract 0 from 50.
50-0 = 50.
Your range is 50.
I hope this helps!
3 0
3 years ago
Can someone help me with my homework please!
Bezzdna [24]

Answer:

(-1, 4)

Step-by-step explanation:

In the figure attached,

Ordered pair representing point P is (3, 4) [parallel to y-axis]

If this point has been reflected across a line x = 1

New point after reflection across x = 1 will be,

P(3, 4) → P'(-1, 4)

Since point P and P' will be equidistant from the line (x = 1), so the x ordinate of P' will be = 3 - 4 = -1

And y-ordinates of point P' will be same as y = 4

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3 years ago
What is the inverse of the function y=3x+4
almond37 [142]
f^{-1} (x)=- \frac{4}{3} + \frac{x}{3}
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3 years ago
How do I write the exponent expression below in numbers
Irina-Kira [14]

Answer:

(3^6)/2

Step-by-step explanation:

make sure everything as the numerator is in parenthesis

4 0
3 years ago
Soup ordinarily priced at two cans for 33 cents, may be purchased in lots of a dozen for $1.74. What are the savings per can whe
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i think it would be d.) 2 cents

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