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Aneli [31]
3 years ago
14

I need to do this class soon, please help me

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
4 0

Answer:

Step-by-step explanation:

18. x + 25 = 55

     x = 30

19. 2x - 5 = 95

     2x = 100

      x = 50

20. 3x - 22 = 2x + 26

     x - 22 = 26

     x = 48

21. 3x - 18 + 105 = 180

    3x + 87 = 180

    3x = 93

      x = 31

22. 19x + 17x = 180

      36x = 180

       x = 5

   27(5) = 135

23. 5x + 40 + 2x = 180

7x + 40 = 140

7x = 140

x = 20

5(20) = 100

2(20) = 40

5(20) + 40 = 100 + 40 = 140

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Find the value of f(-3) for the function below. f(x) = 2x + 10
Allushta [10]

Answer:

4

Step-by-step explanation:

For this problem, we are trying find the output of when plug in -3 into 2x+10:

f(-3)=2(-3)+10=-6+10=4

4 0
3 years ago
Which of the following is NOT TRUE about the distribution for averages?
Galina-37 [17]

Answer:

The following is NOT TRUE about the normal distribution, that is, d.) The curve is right-skewed(that is, skewed to the right).

Step-by-step explanation:

In a normal distribution the properties of which are given as follows:

i) all the central tendency measures, that is, the mean, the median and the mode are equal.

ii) The area under the bell curve is equal to one.

iii.) The bell curve is symmetric about the center, or mean.

iv.) The bell curve does not touch the x - axis.

Therefore only the following is NOT TRUE about the normal distribution, that is, d.) The curve is right-skewed (that is, skewed to the right).

7 0
4 years ago
Find the values of C for which C(x+2)—(x+2)(x–2)=0 has just one solution. please help me ASAP ​
CaHeK987 [17]
<h3>Answer:   C = -4</h3>

==================================================

Work Shown:

C(x+2) - (x+2)(x-2) = 0

(x+2)(C-(x-2)) = 0

(x+2)(C-x+2) = 0

x+2 = 0 or C-x+2 = 0

x = -2 or x = C+2

If we want one solution only, then we must make C+2 = -2 which solves to C = -4

If C = -4, then x = C+2 = -4+2 = -2 which matches with the first solution mentioned. If C is anything else but -4, then we'd have two different solutions (eg: C = 10 leads to x = C+2 = 12 as the other solution)

3 0
2 years ago
What is the missing step of her solution?
Aneli [31]
I’m not a 100 percent but the answer is a because you have to subtract 3/2 - -13/2 which equals -16/2 and divide and u get -8
3 0
3 years ago
if the probability that the islanders will beat the rangers in a game is 0.44,what is the probability that the islanders will wi
Rama09 [41]

Answer:

30.91% probability that the islanders will win exactly one out of four games in a series against the rangers

Step-by-step explanation:

For each game, there are only two possible outcomes. Either the Islanders win, or they do not. The probability of the Islanders winning a game is independent of other games. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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

And p is the probability of X happening.

The probability that the islanders will beat the rangers in a game is 0.44

This means that p = 0.44

What is the probability that the islanders will win exactly one out of four games in a series against the rangers? ​

This is P(X = 1) when n = 4. Then

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

P(X = 1) = C_{4,1}.(0.44)^{1}.(0.56)^{3} = 0.3091

30.91% probability that the islanders will win exactly one out of four games in a series against the rangers

6 0
3 years ago
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