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Wittaler [7]
3 years ago
13

A package of 3 pairs of insulated gloves costs ​$20.37. What is the unit price of the pairs of gloves​?

Mathematics
2 answers:
Alinara [238K]3 years ago
6 0

Answer: 6.79

Step-by-step explanation:

laiz [17]3 years ago
4 0

Answer:

B

Step-by-step explanation:

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The first one is fraction and the second one is volume.
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3 years ago
The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam
irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0
3 years ago
F(x) = x^2 - 16 What are the solutions for x when f of x equals 9?
andrey2020 [161]

Answer:

65

Step-by-step explanation:

5 0
2 years ago
A boy is building a pyramid out of building blocks. He puts 20 blocks in the first row, then he puts 19 blocks in the row above,
rjkz [21]

Answer:

<h3>The answer is 206 I believe</h3>

8 0
3 years ago
Waylon played defense in 12 soccer games. This was 60% of the total games he played. How many games did Waylon play?
puteri [66]

Answer:

20 games

Step-by-step explanation:

(12/x)=(60/100)

12*100=1200

60x=1200

x=20

4 0
3 years ago
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