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ddd [48]
3 years ago
13

Find x if the average of 20,20,19,13 and x is 16

Mathematics
2 answers:
Assoli18 [71]3 years ago
7 0
A/Q
(20+20+19+13+x) ÷ 5 = 16
72+x =16×5
72+x = 80
x = 80 - 72
x = 8
amid [387]3 years ago
4 0
16 times the quantity of numbers, in this case 5, which = 80, then subtract each number, 80-20-20-19-13=8.  X should = 8
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When Emily woke up, the temperature was 8 degrees F. By noon, the temperature had risen by 3 degrees F. It rose another 6 degree
Vadim26 [7]
The temperature when Emily went to bed was -4°F.
Step-by-step explanation:
8°F + 3°F = 11°F (noon)
The temperature had risen by 3°F by noon. This means to add 3.
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The temperature rose another 6°F in the afternoon. This means add 6 to the temperature from noon.
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2 years ago
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3 years ago
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Hi

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6 0
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Answer:

<em>The student completed 13 courses worth 3 credits</em>

Step-by-step explanation:

<u>System of Equations</u>

Let's assign the following variables:

x = number of courses worth 3 credits

y = number of courses worth 4 credits

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