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Damm [24]
3 years ago
9

-4(2k – 1) +9k - 15 simplify expression​

Mathematics
2 answers:
Aneli [31]3 years ago
7 0

Answer:

k - 11

Step-by-step explanation:

Firstly, we have to distribute: -8k + 4 + 9k - 15

Collect like terms: 1k - 11 OR k - 11

pentagon [3]3 years ago
6 0
Step one - multiply the expression within brackets:
-8k + 4 + 9k - 15

Step 2 - reduce k’s and numbers:
k - 11

That’s it! :)
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Sheryl got these scores on her spelling tests.
erica [24]

Answer:

5.6

Step-by-step explanation:

Sheryl got the following scores on her spelling tests.

95, 89, 99, 85, 82

Mean = sum of all observations/ Number of observations

Sum of all observations =95+89+99+85+82=450

Number of observations = 5

So,

Mean =\frac{450}{5}=90

Let M denotes the mean

Mean absolute deviation =\frac{\sum_{i=1}^{n}\left | x_i-M \right |}{n}

Put n=5

So,

Mean absolute deviation =\frac{\sum_{i=1}^{5}\left | x_i-M \right |}{5}=\frac{|95-90|+|89-90|+|99-90|+|85-90|+|82-90|}{5}=\frac{5+1+9+5+8}{5} =\frac{28}{5}=5.6

3 0
3 years ago
HELP PLEASE ill give tons of poitns and brainlist
andre [41]

Answer:

x = 3.4

Step-by-step explanation:

Given the graphs of 2 functions, then the solutions to both are at their points of intersection, that is

where f(x) = g(x)

There are 3 possible points of intersection to f(x) = g(x)

The one on the list , however, is at x = 3.4

7 0
3 years ago
Read 2 more answers
Mr. Brown has 20 students in his English 6 class. There are 15 boys and 5 girls. If he puts all their names in a hat and draws o
WINSTONCH [101]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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(PLEASEE HELPP 24 points)Regina’s work to find the surface area of a square pyramid from its net is shown below. A square pyrami
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Answer:

She should have used One-half (9.4) (11.9) to represent the area of a single triangle

Step-by-step explanation:

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area of each triangle = 1/2*base*height = 1/2*9.4*11.9

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8 0
4 years ago
Find 110% of 80 by writing the percent as a fraction
san4es73 [151]

Answer:

\frac{80}{100} i think its 80 or 88

Step-by-step explanation:

so sorry if this is wrong

4 0
3 years ago
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