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eimsori [14]
4 years ago
5

PLEASE HALPPPPPPP

Mathematics
1 answer:
sasho [114]4 years ago
3 0

Answer:

k

Step-by-step explanation:

i think it's 75

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What type of slope is shown in the graph?
boyakko [2]

Answer:

this is a negative slope

Step-by-step explanation:

hope this helps!

6 0
3 years ago
(20 points) A statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s
Nimfa-mama [501]

Answer:

The P-value is 0.0234.

Step-by-step explanation:

We are given that a statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s = 20.

Let = population mean.

So, Null Hypothesis, : = 100 {means that the population mean is equal to 100}

Alternate Hypothesis, : > 100 {means that the population mean is more than 100}

The test statistics that will be used here is One-sample t-test statistics because we're yet to know about the population standard deviation;

T.S. = ~

where, = sample mean = 98

s = sample standard deviation = 20

n = sample size = 400

So, the test statistics = ~

= -2

The value of t-test statistics is -2.

Now, the P-value of the test statistics is given by;

P( < -2) = 0.0234 {using the t-table}

8 0
3 years ago
Simplify (2^5/3^2)^4
BabaBlast [244]

Answer:

first one on top.

Step-by-step explanation:

3 0
3 years ago
Barry owns a music store, He recorded the sales of a newly launched album as part of his biweekly inventory. The table shows the
dimulka [17.4K]
Hi! Basically, the problem is asking us to find the values of a, b, and c in the equation f(x)=a x^{2} +bx+c. Since we have three unknowns, we just need three equations. We can find these equations by using the data in the table.

First let's plug x = 0 and f(x) = 0.
0=0+0+c
c=0

Now that we know c, it's time to pick two more pairs. Let's plug-in (2,78) and (4,152)

78=4a+2b
152=16a+4b

Before proceeding with the process of eliminating one variable, let us first reduce both equations to their lowest terms. We divide the first equation by 2 and we divide the second one by 4.

39=2a+b
38=4a+b

Next, we subtract equation 2 from equation 1.

1=-2a
a=-0.5

Finally, we substitute the value of a to equation 2 to get the value of b.

38=4(-0.5)+b
b=40

Therefore, the function should be f(x)=-0.5 x^{2} +40x
5 0
3 years ago
Read 2 more answers
a fan has five equally spaced blades. suppose you line up two fans directly on top of each other. What is the least number of de
Irina18 [472]

Answer:

72°

Step-by-step explanation:

There are 5 blades, equally spaced.  So the angle between adjacent blades is 360° / 5 = 72°.  So you can rotate the fan 72° and the blades will align again.

7 0
3 years ago
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