2 years ago

Can you help me please I pay you £50

Mathematics

1 answer:

trapecia [35]2 years ago

7 0

Answer:

(-3,4), (-3,1), and (-5,1)

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Quality control is an important issue at ACME Company which manufacturers light bulbs. In order to conduct testing of the life h

mrs_skeptik [129]

Answer: 3424.28

Step-by-step explanation:

Given data : 378, 361, 350, 375, 200, 391, 375, 368, 321

Number of data values = 9

Mean : $\overline{x}=\dfrac{\sum^n_{i=1} x_i}{n}$

$\\\\=\dfrac{378+361+350+375+200+391+375+368+321}{9}\\\\=\dfrac{3119}{9}\approx346.56$

Variance = $\dfrac{\sum^n_{i=1} (x_i-\overline{x})^2}{n-1}$

$\sum^n_{i=1} (x_i-\overline{x})^2 = (31.44)^2+(14.44)^2+(3.44)^2+(28.44)^2+(-146.56)^2+(44.44)^2+(28.44)^2+(21.44)^2+(-25.56)^2\\\\=27394.2224$

Variance = $\dfrac{27394.2224}{8}=3424.2775\approx3424.28$

4 0

3 years ago

What is the answer to the problem 5x-2=2x-3

LUCKY_DIMON [66]

First, isolate the x:

5x-2x= 2-3

Then solve!

3x= -1
x= -1/3

Hope this helps!

4 0

3 years ago

Log base 8 of 1 over 32

Vanyuwa [196]

Upload a pic like take a pic

8 0

3 years ago

What numbers would be in the in the 4 sections of a 2 x 2 array that shows the problem 19 x 11?

marishachu [46]

Answer:

number 2

Step-by-step explanation:

3 0

3 years ago

PLZ HELP FAST WILL GIVE BRAINLIEST!!!

Sveta_85 [38]

#1,4 are biased because the number range is too wide. (include #2 if the question allows)
#1: 31-20 = 11
#2: 29-21 = 8
#3: 30-23 = 7
#4: 50-15 = 35 (OMG that's so biased!)

so if the three surveys are eliminated, then the answer to the second question is 23%.

Hope that helps :)

7 0

3 years ago