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xxTIMURxx [149]
3 years ago
13

1) Which expression is equivalent to 8x - 2y + x + x

Mathematics
1 answer:
andrey2020 [161]3 years ago
5 0

Step-by-step explanation:

8x - 2y + x + x

8x - 2y + 2x

10x - 2y

D 10x - 2y

So D Option is the correct answer

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Which inequality is the solution to 20+2&lt;.<br> 2&lt;5-8?<br><br> ASAP PLEASE
Natalija [7]

Answer:

  • C. x > 90

Step-by-step explanation:

  • 20 + 2 < x/3 - 8
  • 22 + 8 < x /3
  • 30 < x /3
  • 30*3 < x
  • 90 < x
  • x > 90

Correct choice is C

8 0
2 years ago
Your friend has $100 when he goes to the fair.he spends $10 to enter the fair and $20 on food.rides at the fair cost $2 per ride
serg [7]

Answer:

The answer is A f(x)=-2x + 70

Step-by-step explanation:

4 0
2 years ago
A person calls people to ask if they would like to extend their automobile insurance beyond the normal3years. The probability th
Sonbull [250]

Using the binomial distribution, it is found that there is a 0.0231 = 2.31% probability that the first person to say yes will occur with the seventh customer.

For each person, there are only two possible outcomes, either they say yes, or they say no. The probability of a person saying yes is independent of any other person, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • The probability that the seventh person is the first to say yes is P(X = 0) when n = 6(first six say no) multiplied by 0.37(probability the seventh say yes).
  • 37% say yes, hence p = 0.37

Then:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{6,0}.(0.37)^{0}.(0.63)^{6} = 0.0625

p = 0.37(0.0625) = 0.0231

0.0231 = 2.31% probability that the first person to say yes will occur with the seventh customer.

A similar problem is given at brainly.com/question/24863377

3 0
2 years ago
Johnathan can jog 3 2/3 miles in 7/8 hour. Determine his average speed in miles per hour.
kap26 [50]
If you would like to know Johnathan's average speed in miles per hour, you can calculate this using the following steps:

3 2/3 = 11/3 miles ... 7/8 hour
x miles = ? ... 1 hour

11/3 * 1 = 7/8 * x
11/3 = 7/8 * x
x = 11/3 * 8/7 
x = 88/21
x = 4 4/21 miles

The correct result would be 4 4/21 miles per hour.
5 0
3 years ago
A mother is three times as old as her daughter, and the sum of their ages
garri49 [273]

Answer:

33

Step-by-step explanation:

If m = Mother's age and d = daughter's age, we can make the following equations

m = 3d

m + d = 44

Now, using substitution, we can substitute m for 3d in the second equation:

3d + d = 44, 4d = 44, d = 11

Then, we can plug d into the first equation: m = 3(11) = 33

3 0
2 years ago
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