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DanielleElmas [232]
3 years ago
14

Select the expression that represents the multiplicative inverse of -4.

Mathematics
1 answer:
wariber [46]3 years ago
5 0

Answer:

C

Step-by-step explanation: C is right because multiplicative inverse is the opposite of a number so the opposite of -4 is 4.

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Differentiating Exponential functions In Exercise,find the derivative of the function. See Example 2 and 3.
nadya68 [22]

Answer:

f'(x)=2(e^4^x)+(x^2+1)(4e^4^x)

Step-by-step explanation:

The derivative of the function:

(x^2+1)e^4^x

The rule for the product of two functions:

f'(x)=g'(x)h(x)+g(x)h'(x)

Therefore

g(x)=x^2+1

g'(x)=2

f(x)=e^4^x

f'(x)=4e^4^x

f'(x)=2(e^4^x)+(x^2+1)(4e^4^x)

4 0
3 years ago
The side length of aDavid is a statistician. He has a sample size of 40 (which he cannot change). What element of his hypothesis
Sergeeva-Olga [200]

Answer: D) the significance level of the test

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

Explanation:

The significance level of the test, also known as "alpha", is the probability of making a type 1 error. A type 1 error is where you reject the null hypothesis but it was true all along.

The null hypothesis is where we test a certain probability distribution (eg: normal distribution). Specifically we gather a sample of values and compute the test statistic. If the probability of getting that test statistic or more extreme is smaller than alpha, then we reject the null. This probability value is known as the p-value.

If you lower the alpha value, then that will make it more likely you do not reject the null. Consider an example where alpha = 0.10 to start with. If you get a p-value of 0.02, then you would reject the null. The same would apply for alpha = 0.05; however, with alpha = 0.01, the p-value is no longer smaller than alpha. At this point we do not reject the null. Your textbook may use the phrasing "fail to reject the null".

Going in the opposite direction, increasing the alpha value will make it more likely to reject the null. Each time you adjust the alpha value, keep the p-value to some fixed number (between 0 and 1).

6 0
3 years ago
Read 2 more answers
A surveyor measures the lengths of the sides of a triangular plot of land. What is the measure of the angle of the triangular pl
SVEN [57.7K]
The second one is correct
4 0
3 years ago
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$750 are deposited into an account quarterly for eight yeara at an interest rate of 7.9% compounded quarterly how much is in the
IgorC [24]
750*7.9%*8=474 is the account at the end of 8 years. Good luck
4 0
3 years ago
Which graph shows y=x^2+3x-4
Ivahew [28]

Answer:

Third graph in the photo

Step-by-step explanation:

x^2+3x-4 can be factored as (x+4)(x-1). When y=0, x must be -4 or 1 to satisfy the equations, and thus the roots of the graph are at x=-4 and x=1. When x=0, y=(4)(-1)=-4. The only graph that satisfies both of these requirements is the third/last one.

3 0
2 years ago
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