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3 years ago

Which point is a solution to the inequality shown in this graph? (3,2) (-3,-6)

Mathematics

2 answers:

Angelina_Jolie [31]3 years ago

8 0

Answer:

Step-by-step explanation:

Alex_Xolod [135]3 years ago

4 0

The actual answer would be (0.5)

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Solve the inequality. Graph the solution set. 23 + 156 > 5(3b + 1)

Elan Coil [88]

Answer:

b<58/5

Step-by-step explanation:

4 0

3 years ago

A set of data items is normally distributed with a mean of 400 and a standard deviation of 60. Find the data item in this distri

Softa [21]

Answer:

The data item is $X = 580$

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 400 and a standard deviation of 60.

This means that $\mu = 400, \sigma = 60$

z=3

We have to find X when Z = 3. So

$Z = \frac{X - \mu}{\sigma}$

$3 = \frac{X - 400}{60}$

$X - 400 = 3*60$

$X = 580$

The data item is $X = 580$

6 0

3 years ago

Marshall drove to work in rush hour traffic, going just 27 miles in 1 hour and 20 minutes. Later that day, he left work early to

iragen [17]

Answer:

The average speed of Marshall is 29.7 mph

Step-by-step explanation:

Given;

distance traveled to work, d₁ = 27 miles

distance traveled back home, d₂ = 27 miles

initial time taken, t₁ = 1 hour and 20 minutes

final time taken, t₂ = 29 minutes

Total distance traveled, d = d₁ + d₂ = 27 miles + 27 miles = 54 miles

Total time taken for the journey, t = t₁ + t₂ = 1 hour + ( 20 mins + 29 mins)

t = 1 hour + 49 mins = 1 hour + 0.817 hour = 1.817 hour

The average speed is given by;

v = total distance / total time

v = 54 miles / 1.817 hour

v = 29.7 mph

Therefore, the average speed of Marshall is 29.7 mph

8 0

3 years ago

Conner works 8 1/2 hours and earns $80.75. If Zoey makes an hourly rate that is proportional and earns $118.75, how many hours d

Reptile [31]

Answer:

Step-by-step explanation:

In 8 hours 30m Corner earns $80.75

In how many hours Zoey earns $118.75

Hours Zoey works= 510*118.75/80.75(converted 8hours into minutes by multiplying with 60)

Solving we get 12 hours 30m.

8 0

3 years ago

Write the expression 12 × 4-2( the 2 is for the symbol squared.) in words.

Natalka [10]

Answer: Twelve times four squared

Step-by-step explanation: hope it helps

6 0

3 years ago