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mr Goodwill [35]
3 years ago
8

Which quadratic function is represented by the graph?

Mathematics
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

123

Step-by-step explanation:

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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
Which term describes a fraction that has a variable or variable expression in its numerator, its denominator, or both?
inna [77]
<span>The right answers is B. Rational expression.

This is true given that the statement establishes a term that describes a fraction that has a <em>variable or variable expression</em> in its numerator, denominator or both, that is, this is the concept of the quotient of two polynomials called rational expression. Finally, we can get the following rational expressions that matches with this concept, namely:

</span>(1) \ \frac{1}{x} \\ \\ (2) \ \frac{2x-1}{x+1} \\ \\ (3) \ \frac{x^{2}-1}{x^{2}+1}<span>
</span>
6 0
3 years ago
Read 2 more answers
A plant manager needs 75 sq. yds. of fabric and the fabric is only 32 in. wide. How many linear feet must she make to produce 75
il63 [147K]
I think 225 cuz its only asking for the feet needed no the width so thats irrelevant <span />
4 0
3 years ago
30 points.Please answer with explanation​
Bas_tet [7]

Answer:

m∠1 = 142

Step-by-step explanation:

38 + m∠1 = 180

m∠1 = 142

5 0
3 years ago
If i had 4 pounds of sugar for $2 how much for 1 lb
MakcuM [25]

Answer:

0.5

Step-by-step explanation:

4 pounds ÷$2=2

that means...

1 pound÷$2=0.5

your welcome lol.

4 0
3 years ago
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