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Gnom [1K]
1 year ago
9

-3=x+5 what I need to do with a negative and positive number?

Mathematics
1 answer:
Inga [223]1 year ago
8 0

In this case, we'll have to carry out several steps to find the solution.

Step 01:

-3=x+5

x = ?

Step 02:

We must apply the algebraic properties.

-3 = x + 5

- 3 - 5 = x

- 8 = x

The answer is:

x = - 8

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When finding the margin of error for the mean of a normally distributed population from a sample, what is the critical probabili
svlad2 [7]

Critical probability is the essentially cut-off value. The critical probability when the confidence level of 58% is 0.79.

<h3>What is the critical probability?</h3>

Critical probability is the essentially cut-off value that defines the region where the test statistic is unlikely to lie.

As it is given that the confidence level is 58%. therefore, in order to calculate the critical probability, we need to calculate the margin of error within a set of data, and  it is given by the formula

\rm Critical\ Probability, (P*) = 1-\dfrac{\alpha }{2}

where the value of the α is expressed as,

\alpha= 1 -\dfrac{\rm Confidence\ interval}{100}

Now, as the confidence interval is given to us, therefore, the value of the alpha can be written as,

\alpha= 1 -\dfrac{\rm 58\%}{100} = 0.42

Further, the critical probability, assuming a confidence level of 58% is,

\rm Critical\ Probability, (P*) = 1-\dfrac{\alpha }{2}\\\\\rm Critical\ Probability, (P*) = 1-\dfrac{0.42}{2} = 0.79

Hence, the critical probability is 0.79.

Learn more about Critical Probability:

brainly.com/question/5625386

6 0
2 years ago
Jose's car can drive 12 miles on each gallon of gas. How many gallons will he need to drive 3,298 miles?✱
masya89 [10]

Answer:

274.84 gallons.

Step-by-step explanation:

Divide 3,298 by 12

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6 0
3 years ago
In △ABC, angle C is a right angle and BC &gt; AC. Select all the statements that are true.
Alexus [3.1K]

△ABC  right angle C, leg BC > leg AC.  So angle A > angle B.

a=BC, b=AC, c=AB

a > b

sin A= cos B = a/c

sin B = cos A = b/c

a = c sin A = c cos B

b = c sin B = c cos A

a > b

c sin A > c sin B

sin A > sin B

c cos B > c cos A

cos B > cos A

Answer:  B, E

7 0
3 years ago
If f(x) = 3x - 2 and g(x) = 2x+1, find (f+ g)(x).<br><br> A. 5x-1<br> B. X-3<br> c. 5x-3<br> D. X-1
Vladimir79 [104]

Answer:

A. 5x - 1

Step-by-step explanation:

  3x - 2

+ 2x + 1

------------

5x-1

7 0
3 years ago
Read 2 more answers
Pentagon ABCDE is rotated 90 degrees counterclockwise about the origin to form pentagon A’ B’ C’ D’ E’. What is the y-coordinate
Sophie [7]

Answer:

4

Step-by-step explanation:

<em>When rotating a point 90 degrees counterclockwise about the origin the  point A(x,y) becomes A'(-y,x). </em>

Point C has coordinates of (4, 3)

New coordinates will be C'(-3, 4)

<u>So the answer is:</u>

y-coordinate of C' is 4

5 0
3 years ago
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