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3 years ago

What is what is this please hel

Mathematics

1 answer:

user100 [1]3 years ago

8 0

Those are exponents and placements of the numbers in decimal like tenths hundretdths thousandths.

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What is this answer

liberstina [14]

50=16t^2

Divide both sides by 16
3.125=t^2

Find the square root of both sides (approximated)
1.77= t

Final answer: F

3 0

3 years ago

An average light bulb manufactured by the Acme Corporation lasts 300 days with a standard deviation of 50 days. Assuming that bu

notsponge [240]

Answer:

1. 90% 2. 10% 3. 50%

Step-by-step explanation:

Standard Deviation (σ) = 50 days

Average/Mean (μ) = 300days

Probability that it would last more than 300 days = P(Bulb>300 days)

We will assume there are 365 days in a year.

P(Bulb>300 days) implies that the bulb would

Using the normal equation;

z = standard/normal score = (x-μ)/σ where x is the value to be standardized

P(Bulb>300 days) implies x = 365 days

Therefore z = (365-300)/50 = 1.3

Using the normal graph for z=1.3, probability = 90%

2. P(Bulb<300 days) = 1 - P(Bulb>300 days)\

P(Bulb<300 days) = 1 - 0.9

P(Bulb<300 days) = 10%

3. P(Bulb=300 days) implies z=0 since x=300

Using the normal graph for z=0, probability =50%

6 0

3 years ago

A 6-sided number cube is rolled. What is the probability that it will land on a number greater than 2?

vagabundo [1.1K]

Answer:2/3 or 66%

Step-by-step explanation:

So, what are the numbers greater than Not equal to 2 and less than equal to 6 ? 3,4,5,6 so that’s 4 out of 6 which simplified to 2/3 or 66%

3 0

4 years ago

Estimate the time it would take you to drive 361 miles at 42 miles per hour. Round to the nearest hour.

polet [3.4K]

Answer:

It would take you 9 hours

Step-by-step explanation:

Speed (s) = Distance (d) / Time (t)

given that; Speed = 42 miles/hour

Distance = 361 miles

42 miles/hour = 361 miles / Time (t)

Time (t) * 42 miles/hour = 361 miles

Time (t) = 361 miles / 42 miles/hour

Time (t) = 8.59 hours

≈ 9 hours (to the nearest hour)

8 0

3 years ago

What is the fourth root of -16?

Zarrin [17]

Answer:

The answer to your question is 2i

Step-by-step explanation:

$\sqrt[4]{-16}$

- Get the prime factors of -16

- 16 2

- 8 2

- 4 2

- 2 2

16 = 2⁴

- Express the -16 as a power

$\sqrt[4]{-2^{4}} or \sqrt[4]{2^{4}i^{2}}$

Remember that -1 = i²

- Get the fourth root of -16

6 0

3 years ago