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quester [9]
3 years ago
15

Which expression is equivalent to 2x + x^2 + 3x + 5x^2 - 10x?

Mathematics
2 answers:
Nonamiya [84]3 years ago
8 0
<span>2x + x</span>²<span> + 3x + 5x</span>²<span> - 10x      (combine like terms)
6x</span>² + 5x -10x
6x² - 5x
which is the same as
-5x +6x²
Your answer is C
diamong [38]3 years ago
3 0
Answers is C
X^2 + 5x^2 + 2x+3x- 10x
6x^2 + 5x - 10x
-5x + 6x^2
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Pls help with the question​
eduard

Answer:

thats 3

Step-by-step explanation:

d:

7 0
3 years ago
Please help this is already late ​
GaryK [48]

Answer:

C = 132°

Step-by-step explanation:

(5y + 28) = 12y

5y - 5y + 28 = 12y - 5y

28 = 7y

y = 4

12 (4)

= 48

48 + C = 180°

48 - 48 + C = 180 - 48

C = 132°

4 0
3 years ago
Find the missing angles and sides
maria [59]

Step-by-step explanation:

m∠1 = 180-100 = 80

m∠2 = 180-150 = 30

m∠3 = 180-(80+30) = 180 - 110 = 70

using the law of sine :

AC/sin(m∠2) = 5/sin(m∠3) ⇒ AC = sin(m∠2)*(5/sin(m∠3)) = sin(30)×(5÷sin(70))

=2.66044443119

CB/sin(m∠1) = 5/sin(m∠3) ⇒ CB = sin(m∠1)*(5/sin(m∠3)) ⇒ CB = sin(80)×(5÷sin(70)) = 5.240052604588

8 0
2 years ago
2. In the 2016 presidential election, most Americans were inundated with poll results, all of which reported a margin of error.
Fiesta28 [93]

Answer:

Throughout the clarification segment elsewhere here, the definition including its query is mentioned.

Step-by-step explanation:

  • The error margin applies to the difference between the results of this survey as well as the real estimates.
  • This may occur for several factors, such as limited sample size, incomplete survey, people's biased answers, etc.
  • It shows us where the outcomes of this study are not reliable and 100% right and, for several different reasons, there seems to be a disparity between some of the published and real statistics.

In addition to making audiences and people believe that perhaps the recorded results could not be considered as 100 percent reliable so there's still a variety of errors throughout themselves, it is important to incorporate this detail in polling data.

7 0
3 years ago
The scores on an exam are normally distributed with a mean of 74 and a standard deviation of 7. What percent of the scores are g
muminat
The difference between 81 and the mean is 
   81 - 74 = 7
This is exactly the value of the standard deviation. You know that the "empirical rule" tells you 68% of all scores lie within 1 standard deviation of the mean. That tells you 32% of all scores lie beyond 1 standard deviation from the mean.

The normal distribution is symmetrical, so half of those (16%) lie above 1 standard deviation above the mean; the other half (16%) lie below 1 standard deviation below the mean. We're only concerned with the first group—those scores above 1 standard deviation above the mean.

The appropriate choice is
   D. 16%
3 0
3 years ago
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