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irina [24]
3 years ago
7

Can someone please help asap? find f(-4) if f(x) = x2 - x

Mathematics
1 answer:
Marianna [84]3 years ago
6 0

Answer:

20

Step-by-step explanation:

Given function f(x)=\[x^{2}-x\]

We need to find f(-4) which means we need to find the value of the function when x=-4 .

On substituting x=-4 in the given function:

f(-4)=\[-4^{2}-(-4)\]

Square of -4 is 16.

Hence, f(-4)=\[16+4\]

=20

Hence the value of the given function f(x)=\[x^{2}-x\] when x=-4 is 20.

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A Walton College of Business graduate, wants to start a hot dog stand on Dickson Street. He needs to raise $15,000 for start-up
Artist 52 [7]

Answer:

Yes, he is meeting his original goal to be successful.

The critical value is 1.833

Step-by-step explanation:

H0: mu = 300

Ha: mu > 300

The test is a one-tailed test because the alternate hypothesis is expressed using greater than.

Test statistic (t) = (sample mean - population mean) ÷ (sample sd/√n)

sample mean = 335

population mean = 300

sample sd = 50

n = 2×5 = 10

t = (335 - 300) ÷ (50/√10) = 35 ÷ 15.81 = 2.21

Degree of freedom = n-1 = 10-1 = 9

Significance level = 5%

Critical value corresponding to 9 degrees of freedom and 5% significance level is 1.833.

Conclusion:

Reject the null hypothesis because the test statistic 2.21 is greater than the critical value 1.833.

His original goal to be successful is contained in the alternate hypothesis, therefore, he is meeting it.

3 0
3 years ago
The equation y minus 3 = negative 2 (x + 5) is written in point-slope form. What is the y-intercept of the line?
djverab [1.8K]

Answer:

y=-7

Step-by-step explanation:

y-3=-2(x+5)

distribute the -2 into the ( )

y -3= -2x -10

cancel to -2x

y- 3 = -2(0) -10

y-3 = -10

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y= -7

Hope this helps!!

8 0
3 years ago
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Which of the following represents the proportion 6 is to 9 as 12 is to 18?
sattari [20]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
Neal is highlighting multiples of 9 on his hundreds chart.what. 3 numbers will he highlight next.
Solnce55 [7]
The next 3 numbers to be highlighted would be 90, 99, and 108.
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or you can just keep adding on 9 from the previous number like 81 + 9= 90

8 0
3 years ago
How do i solve for the inequality, p=3.4?​
Roman55 [17]

Answer:

Step-by-step explanation:

This is already solved, and this would not be considered a inequality since it has only a equal sign.

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3 years ago
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