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Anni [7]
3 years ago
10

If f(x) = 8 - 4x, find the value of x when f(x) = -12.

Mathematics
2 answers:
DiKsa [7]3 years ago
7 0

Answer:

x=5

Step-by-step explanation:

-12=8-4x

-20=-4x

5=x

zzz [600]3 years ago
6 0
^^^ she got the answer
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The 3rd term of an arithinetic progression is-9
padilas [110]

Answer:

-64

Step-by-step explanation:

The computation of the 10th term of the progression is shown below:

The 3rd term is -9

A_n = a + (n - 1)d

-9 = a + (3 - 1)d

-9 = a + 2d

-9 - 2d = a

Now the 7th term is -29

A_n = a + (n - 1)d

-29 = a + (7 - 1)d

-29 = a + 6d

Put the a value to the above equation

-29 = -9 - 2d + 6d

-29 + 9 = 4d

-20 = 4d

d = -5

Now

-9 - 2d = a

-9 - 2(-5) = a

-9 - 10 = a

a = -19

Now finally the 10th term of the progression is

= a + (n - 1)d

= -19 + (10- 1)-5

= -19 -45

= -64

6 0
3 years ago
Simplify.<br><br> |-10| + |5|
denis23 [38]
Hey there!

Here is your answer:

<u><em>The proper answer to this question is "10+5".</em></u>

Reason:

<u><em>I-10I=10</em></u>
<u><em>I5I=5 </em></u>
<u><em>Therefore this equation is simplified into 10+5!</em></u>

<em>Therefore the answer is 10+5=!</em>

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
5 0
4 years ago
Read 2 more answers
Suppose your statistics professor reports test grades as​ z-scores, and you got a score of 2.492.49 on an exam. ​a) Write a sent
kolezko [41]

Answer:

a) Option C) The score was 2.49 standard deviations higher than the mean score in the class.

b) 2.3%

Step-by-step explanation:

a) We are given that the distribution of test grades is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

\displaystyle\frac{x-\mu}{\sigma} = 2.49\\\\x - \mu = 2.49\sigma\\x = \mu + 2.49\sigma

Option C) The score was 2.49 standard deviations higher than the mean score in the class.

b) The z-score for a particular score is -2.

We have to evaluate

P(z < -2)

Calculating the value from normal z-table.

P(z < -2) = 0.023

Thus, 2.3% of  of the class scored lower than my​ friend.

6 0
3 years ago
Rank the nine career characteristics in order of their importance to you with the first being the most important
navik [9.2K]
1. President
2. Farmers
3. Army Forces/ Police
4. Doctors 
5. Education Administrators
6.Engineers
7. Lawyers
8.Construction Workers
9. Shopkeepers and other workers


That took a lot of thought, and I doubt I may have covered the most important careers of our society. I hope this helps and I'm extremely sorry if I left out a career and I hope nobody gets offended in any way.

6 0
3 years ago
Read 2 more answers
Points D and E are midpoints of the sides of triangle ABC. The perimeter of the triangle is 48 units.
Kipish [7]

9514 1404 393

Answer:

  A.  2

Step-by-step explanation:

The perimeter is the sum of the side lengths:

  48 = (3t +3t) +(4t +4t) +(7t +6)

  42 = 21t . . . . . . . . . . . . . . . . . . . collect terms, subtract 6

  2 = t . . . . . . . . divide by 21

7 0
3 years ago
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