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Harman [31]
3 years ago
10

If f(x)=4x-20 what is f(4)

Mathematics
2 answers:
Paha777 [63]3 years ago
5 0
F(4)=4(4)-20
f(4)=16-20
f(4)=-4
Rudik [331]3 years ago
3 0

Answer:

<h2>f(4) = -4</h2>

Step-by-step explanation:

f(x) = 4x - 20

f(4) → put x = 4 to the equation of the function:

f(4) = 4(4) - 20 = 16 - 20 = -4

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Please help ill mark brainliest!
Sedbober [7]
So to find the area of a rectangle you would use the formula A = L • W. So the actual dinning hall is 9 • 3 = 18; 18cm would be your area.
8 0
3 years ago
What is the estimated margin of error, using standard deviation?
OLEGan [10]
Find the mean ( average):
105 + 104 + 110 + 112 + 114 + 106 + 108 +109 = 868
Mean = 868 / 8 = 108.5

Standard deviation:
108.5 - 105 = 3.5, 3.5^2 = 12.25
108.5 - 104 = 4, 4^2 = 16
110 - 108.5 = 1.5, 1.5^2 = 2.25
112 - 108.5 = 3.5, 3.5^2 = 12.25
114 - 108.5 = 5.5, 5.5^2 = 30.25
108.5 - 106 = 2.5, 2.5^2 = 6.25
108.5 - 108 = 0.5, 0.5^2 = 0.25
109 - 108.5 = 0.5, 0.5^2 = 0.25

12.25 + 16 +2.25 + 12.25 + 30.25 +6.25+0.25+0.25 = 79.75
79.75/8 = 9.96875, SQRT(9.96875) = 3.1573

Standard Deviation = 3.1573

108.8 +/- 1.96 *(3.1573/sqrt(8) = 110.687 and 106.312

110.687 - 108.5 = 2.19
108.5 - 106.312 = 2.19
 

Margin of error = +/- 2.19



3 0
3 years ago
2. Bo Diddly currently has a squash patch that measures 14 yards in length and 10 yards in
Sav [38]

Answer:14

Step-by-step explanation:

7 0
3 years ago
Does (3,8) make the Equation y=x-5 true?
Setler79 [48]

Answer:

no

Step-by-step explanation:

3 0
3 years ago
Describe the term linear pair, and give an example from the diagram.
Burka [1]

Answer/Step-by-step explanation:

A linear pair is formed when two straight lines intersect to form two angles that are adjacent to each other and are on a straight line. The sum of both adjacent angles equals 180°.

From the diagram given, examples of linear pair are:

<FEG and <GEN

<CDE and <ADC

These are some of the few examples we can see in the given diagram that are linear pairs.

6 0
3 years ago
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