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almond37 [142]
3 years ago
8

Find the exact value under the given conditions.

Mathematics
1 answer:
Leni [432]3 years ago
3 0
Answer:
I think is B
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-x + 9<br><br> if x is -9 what is the answer
Sidana [21]

Answer:

  • Plug in x
  1. -[-9]+9
  2. 18
  • Give brainlist
4 0
3 years ago
Read 2 more answers
The city of Raleigh has 11700 registered voters. There are two candidates for city council in an upcoming election: Brown and Fe
Vesnalui [34]

Answer:

The sample statistic for the proportion of voters surveyed who said they'd vote for Brown is 0.308.

The expected numbers of voters who would vote for Brown is 3604.

Step-by-step explanation:

The sample statistic is a numerical quantity used to represent a characteristic of a sample. For example, sample mean is a sample statistic representing the average of the sample. Or, sample proportion is a sample statistic representing the proportion of a particular variable in the sample. Or sample variance is a sample statistic representing the variance of the sample.

The sample statistic can be used to estimate the population parameter.

They are known as the point estimate of the parameter.

The sample proportion of a variable <em>X</em> is given by:

\hat p=\frac{X}{n}

It is provided that of the <em>n</em> = 250 registered voters selected, the number of voters who said they would vote for Brown is <em>X </em>= 77.

Compute the sample statistic for the proportion of voters surveyed who said they'd vote for Brown as follows:

\hat p=\frac{X}{n}

  =\frac{77}{250}\\

  =0.308

Thus, the sample statistic for the proportion of voters surveyed who said they'd vote for Brown is 0.308.

Compute the expected number of people of the 11700 registered voters who would vote for Brown as follows:

E(X)=N\times \hat p

         =11700\times 0.308\\=3603.6\\\approx 3604

Thus, the expected numbers of voters who would vote for Brown is 3604.

6 0
3 years ago
Solve the inequality 9(x - 3) &lt; 4(x + 10).
tresset_1 [31]

Answer:

The solution is the area x < 67/5

Step-by-step explanation:

Perform the indicated multiplication.  We get:

9x - 27 < 4x + 40

Combining like terms results in:

5x < 67

Then the solution is the area x < 67/5

8 0
4 years ago
Read 2 more answers
• Work out the percentage change to 2 decimal places when £78.98 is increased to £100​
lions [1.4K]

Answer:

The total change is £21.02 from the original amount of £78.98. Therefore, the percentage change is directly related to the original amount.

Divide the total change by the original amount to determine the percentage change the new amount represents.

21.02÷78.98=0.15219 which rounds up to two decimal places as 15.22%.

6 0
3 years ago
If I have an equation in which x = pounds, and y = total cost, can I substitute quarts into the equation
Colt1911 [192]

Answer:

Yes, you can

Step-by-step explanation:

As a point of reference, assume the equation is:

y = 5x

Where

y = total\ cost

and

x = pounds

In standard unit of conversion:

1\ pound = 0.4793\ quart

So:

x\ pounds = 0.4793x\ quart

Substitute 0.4793x for x in y = 5x

y = 5 * 0.4793x

y = 2.3965x

The above equation is the equivalent of y = 5x in quarts

<em>So, irrespective of what the equation is, you can always substitute quarts into the equation.</em>

8 0
3 years ago
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