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3 years ago

Which graph below shows a system of equations with no solution?

Mathematics

2 answers:

Radda [10]3 years ago

5 0

Graph A.....parallel lines will have no solution because they never intersect

-BARSIC- [3]3 years ago

4 0

Answer:

A is correct

Step-by-step explanation:

We need to choose correct graph which has no solution.

As we know if system of equation has no solution then graph must be parallel.

For unique solution, Graph intersect at single point.

For infinite many solution, Graph coincide.

Here we need to choose graph which has no solution.

Graph must be parallel.

Option A: Both line are parallel.

This graph has no solution.

True

Option B: Intersect at one point.

Must be one solution

False

Option C: One graph coincide to another graph.

Infinite many solution.

False

Option D: Intersect at origin. It has unique solution.

False

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A tropical storm has been moving at 15 miles per hour for the past two days. Bess recorded that the storm moved 135 miles yester

Allushta [10]

Answer:

Bess has been keeping track of the storm for 14 hours.

Step-by-step explanation:

The tropical storm has been moving at 15 miles per hour.

Bess recorded that the storm moved 135 miles yesterday and 75 miles today. Total distance covered by storm is

$135+75=210$

The relationship between distance speed and time is defined as

$speed=\frac{distance}{time}$

$15=\frac{210}{time}$

$time=\frac{210}{15}$

$time=14$

Therefore, Bess has been keeping track of the storm for 14 hours.

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3 years ago

Please help and show work i need 17 19 and 21

Nat2105 [25]

Answer:

Step-by-step explanation:

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3 years ago

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galben [10]

Answer:

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Step-by-step explanation:

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3 years ago

Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of pain relief drug is norm

FrozenT [24]

Answer:

a) $P(1$

b) $P(X$

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

2) Part a

Let X the random variable that represent the duration of a safe dosage of pain relief drug, and for this case we know the distribution for X is given by:

$X \sim N(1.5,0.8)$