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ladessa [460]
2 years ago
14

(a) An engineer designs an improved light bulb. The previous design had an average lifetime of

Mathematics
1 answer:
Tatiana [17]2 years ago
3 0

Answer:

C. that the sample size is very large.

Step-by-step explanation:

Here the sample size is large which results in the p-value being less. As a result, reject the null hypothesis, and the effect was thus statistically significant.

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E/3=7. please can some one help
RUDIKE [14]

Answer:

e=21

Step-by-step explanation:

7 0
2 years ago
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Please answer :'<
sesenic [268]

Answer:

D. 56.3 cubic units

Step-by-step explanation:

To find the volume of a rectangular prism you use the formula <u>v=l*w*h</u> which means you multiply <u>5*3*3.75</u> to find your answer of 56.3 cubic units.

3 0
2 years ago
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What value should be added to the expression to create a perfect square? x^2 - 20x
boyakko [2]
To complete the square:
we take the coefficient ox "x" (which in this problem is -20)
we divide it by 2
square that number
then add it to both sides of the equation

-20 / 2 = -10
-10^2 = 100
then we add 100 to both sides of the equation:
x^2 -20x
x^2 -20x +100 = 100
******************************************************
To get the roots of the equation, we take the square root of both sides:
(x -10) * (x-10) = 10
(x-10) = square root (10)
x-10 = <span> <span> <span> 3.1622776602 </span> </span> </span>
x1 = <span> <span> <span> 13.1622776602 </span>
and don't forget that square root of 10 also equals  </span></span><span><span><span> -3.1622776602 </span> </span> </span>
x2 = 10 -<span> <span> <span> 3.1622776602
x2 = </span></span></span> <span> <span> <span> 6.8377223398 </span> </span> </span>


4 0
3 years ago
Zoe plants a sunflower seed and
Len [333]

Answer:

44.52 inches

Step-by-step explanation:

If it grows 3.71 inches per month for 12 months, you need to multiply 3.71 by 12, which gives you 44.52.

7 0
3 years ago
Which statements about the formulas for finding area are true? Select two options.
omeli [17]

Answer:

The area formulas for a triangle and a parallelogram require multiplying base by height.

A rectangle and parallelogram with the same base and height will have the same area.

8 0
3 years ago
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