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adoni [48]
3 years ago
11

I need help Please UwU Thanks!

Mathematics
2 answers:
emmainna [20.7K]3 years ago
6 0
400=4t should be correct
Sever21 [200]3 years ago
5 0
If I’m correct I think it’s 400=4t
You might be interested in
Here you go it is here now
Valentin [98]

Answer:

40+10=50

40+-15=25

40+-30=10

40+-40=0

40+-50=-10

20+-25=-5

Step-by-step explanation:

in this order

3 0
3 years ago
Read 2 more answers
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within 0.50 units of the po
vfiekz [6]

Answer:

b. 224

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.58

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem:

We want to find n, when M = 0.5, \sigma = 2.9 So

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 2.58*\frac{2.9}{\sqrt{n}}

0.5\sqrt{n} = 7.482

\sqrt{n} = 14.964

(\sqrt{n})^{2} = (14.964)^{2}

n = 223.9

The nearest integer number to 223.9 is 224.

So the correct answer is:

b. 224

6 0
3 years ago
Explain why 1/2of2 equals one whole
bixtya [17]
1/2 is another word for .5 or 50 percent. But if you Multiply 1/2 by 2, you multiply and you'll get 2/2 which reduces down to 1.
6 0
3 years ago
Read 2 more answers
The sum and product of two linear functions are shown.
RoseWind [281]

The statements can be used to describe the original functions f(x) and g(x) are;  Option B

<h3>How to interpret function graphs?</h3>

Let the functions be

f(x) = ax + b

g(x) = cx + d

Their sum is;

j(x) = (a + c)x + b + d

Their product is;

k(x) = (ax + b)(cx + d)

From the graph, we see that;

f(x) = x + 6

g(x) = -2x² + 8

f'(x) = 1

g'(x) = -4x

Read more about Function Graphs at; brainly.com/question/4025726

#SPJ1

6 0
3 years ago
If both rational numbers are negative then their sum is always
amid [387]

Answer: the sum is always positive

7 0
3 years ago
Read 2 more answers
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