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Kay [80]
2 years ago
6

Simplify to create an equivalent expression

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
6 0

Answer:

The choose C. – n – 2

Step-by-step explanation:

3n + 2( -2n-1) = 3n -4n -2 = – n – 2

I hope I helped you^_^

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Cuanto ganaran si compran el numero del premio mayor
elixir [45]

Answer:

is this spanish? or the real question

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Consider the hypotheses below. Upper H 0​: mu equals 50 Upper H 1​: mu not equals 50 Given that x overbar equals 60​, s equals 1
Neko [114]

Answer:

We conclude that  \mu\neq 50.

Step-by-step explanation:

We are given that x bar = 60​, s = 12​, n = 30​, and alpha = 0.10

Also, Null Hypothesis, H_0 : \mu = 50

Alternate Hypothesis, H_1 : \mu \neq 50

The test statistics we will use here is;

                    T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~  t_n_-_1

where, X bar = sample mean = 60

              s = sample standard deviation = 12

              n = sample size = 30

So, Test statistics = \frac{60-50}{\frac{12}{\sqrt{30} } } ~ t_2_9

                             = 4.564

At 10% significance level, t table gives critical value of 1.311 at 29 degree of freedom. Since our test statistics is more than the critical value as 4.564 > 1.311 so we have sufficient evidence to reject null hypothesis as our test statistics will fall in the rejection region.

P-value is given by, P(t_2_9 > 4.564) = less than 0.05% {using t table}

Here also, P-value is less than the significance level as 0.05% < 10% , so we will reject null hypothesis.

Therefore, we conclude that \mu\neq 50.

7 0
3 years ago
What is the value of x in log2 (x)-3=1?
Gre4nikov [31]
X=4/log(2) Hope this helps!
4 0
3 years ago
Read 2 more answers
Please answer correctly!
VikaD [51]

Answer:

C ≈-1 and x≈8.1

Step-by-step explanation:


-sqrt(x + 2) - 3 = 4 - 2 abs(x - 3)

Using graphing technology, (see the graph)  they intersect at x≈-1 and x≈8.1

3 0
3 years ago
Read 2 more answers
Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint. The average
bagirrra123 [75]

The y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought. Therefore, option B is the correct answer.

Given that, Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint.

The average is (15 + 3x)/(3+x) per pint.

We need to find what quantity will be represented by the y-intercept of the graph.

<h3>How to find the y-intercept of the graph?</h3>

Since the y-intercept always has a corresponding x-value of 0, replace x with 0 in the equation and solve for y. On a graph, the y-intercept can be found by finding the value of y when x=0. This is the point at which the graph crosses through the y-axis.

Now, the graph of y=(15 + 3x)/(3+x)is given below.

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

x-intercept(s): (−5,0)

y-intercept(s): (0,5)

So, the y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought.

Therefore, option B is the correct answer.

To learn more about y-intercept visit:

brainly.com/question/14180189.

#SPJ1

7 0
9 months ago
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