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TEA [102]
2 years ago
14

What is 3.2 - 5.1n - 3n + 5 simplified

Mathematics
2 answers:
kkurt [141]2 years ago
5 0

Answer:

8.2-8.1n

Step-by-step explanation:

First of all, lets do the n part. WE have -5.1n-3n which equals -8.1n. Then, we have 3.2+5, which is 8.2. So we have 8.2-8n or -8.1n+8.2

nalin [4]2 years ago
3 0

Answer:

−8.1n+8.2

Step-by-step explanation:

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e 400 trials in which the assistant maintained a neutral expression, the driver stopped in 229 out of the 400 trials. Find a 95%
Fittoniya [83]

Answer:

Step-by-step explanation:

n = 400

Proportion p = 229/400= 0.5725

For 95% confidence interval we use Z value as 1.96

Std error = 0.025

margin of error = 1.96*0.025

Confidence interval 95% = 0.5725±Margin of error

= (0.524, 0.621)

b) When smiled x becomes 277

p = 0.6925

Std error = 0.023

Margin of error= 1.96*0.023

Confidence interval = (0.647, 0.738)

Smiling increases the chances of stopping since mean and conidence interval bounds are showing increasing trend.

6 0
2 years ago
Which of the following expressions is equivalent to the expression?
TEA [102]
Answer should be C! Have a great day!
8 0
3 years ago
What is the answer to 240in.= ft.?
zhenek [66]
12in.=1ft
so 240in./12in. = 20ft
6 0
3 years ago
Consider the function p(t) shown, state the intervals on which the function is increasing.
satela [25.4K]

Answer:

its A

Step-by-step explanation:

because A is a reasonable explanation

5 0
2 years ago
Read 2 more answers
Ignore the erase marks but i have no clue how to do this. please help asap
madam [21]
Since they're vertical angles, they're equal in degree measure

since they're equal, we can make the two expressions equal to each other

5a - 1 = 2a + 20
add 1 to both sides

5a = 2a + 21
subtract 2a from both sides

3a = 21
divide both sides by 3a

a = 7

now, plug the answer you found for a into one of the two expressions

5a - 1 becomes (5*7) - 1, which equals 34

to double check that they're equivalent (since they're vertical angles)

2a + 20 becomes (2*7) + 20, which equals 34

both angles are 34 degrees!
7 0
3 years ago
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