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Aliun [14]
3 years ago
13

Simplify. 6x+4y-4x+5y+5

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

2x + 9y + 5

Step-by-step explanation:

Combine like terms:

(6x - 4x) + (4y + 5y) + 5

2x + 9y + 5

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Which of these equations has solutions (5,7) and (8,13)
Elodia [21]

Answer:

D

Step-by-step explanation:

Plug (5, 7) & (8, 13) into each equations and see which one of them makes mathematical sense. You'll find out that y=2x-3 is the right answer.

6 0
3 years ago
The average time an individual reads online national news reports is 49 minutes. Assume the standard deviation is 16 minutes and
Olin [163]

Answer:

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 49 minutes

Standard Deviation, σ = 16 minutes

We are given that the distribution of  time an individual reads is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(no more than 30 minutes)

P( x \leq 610) = P( z \leq \displaystyle\frac{30 - 49}{16}) = P(z \leq -1.1875)

Calculation the value from standard normal z table, we have,  

P(x \leq 30) = 0.118 = 11.8\%

0.118 is the probability someone will spend no more than 30 minutes reading online national news reports.

3 0
2 years ago
What is x equal to ?
denis23 [38]

Answer:

8.62

Step-by-step explanation:

a squared + b squared = c squared

15 squared + b squared = 17.3 squared

225 + b squared = 299.29

b squared = 74.29

b = 8.619

7 0
2 years ago
4. Which expression represents “5 less than twice x”?
notka56 [123]
Answer:
Number Three

Explaination:
Whenever something says "___ than" thats means it goes after. Then x twice is 2x
8 0
2 years ago
Read 2 more answers
What are m and b in the linear equation y=16+6x
mr Goodwill [35]

Answer: B=16 and m=6

Step-by-step explanation:

in y=mx+b the number next to x is always the m/slope and the number without a variable is always the b.

4 0
1 year ago
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