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DanielleElmas [232]
3 years ago
15

Does (-3, -7) make the equation y = 4x + 5 true?

Mathematics
1 answer:
choli [55]3 years ago
5 0

Answer: Yes. True

Step-by-step explanation:

In (-3, -7) , -3 is x and -7 is y.

Now, put those values in the equation.

y = 4x + 5

-7 = (4×-3)+5

-7 = -12 + 5

-7 = -7, which is true

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Q4. A simple random sample of size n=180 is obtained from a population whose size=20,000 and whose population proportion with a
IgorLugansk [536]

Answer:

np = 81  , nQ = 99

Step-by-step explanation:

Given:

X - B ( n = 180 , P = 0.45 )

Find:

Sampling distribution has an approximate normal distribution

Computation:

nP & nQ ≥ 5

np = n × p

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nQ = n × (1-p)

nQ = 180 × ( 1 - 0.45 )

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3 years ago
Slope-intercept form of y + 3 = 4(x – 5).
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Answer:

y =  − 4 x + 23

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8 0
3 years ago
Calvin's school is 2.3 miles directly south of his house. After school, he takes a bus 1.8 miles directly west to the sports com
VladimirAG [237]

Answer:

2.9 miles

Step-by-step explanation:

If you draw this as a diagram, you will see that it is a right angled triangle and the missing side is the hypotenuse (the longest side). To calculate this, you will need to use the right angle law:

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3 0
3 years ago
Determine whether the pair of actions results in independent or dependent events. Serena picks one marble out of a bag. Then, af
harina [27]

Answer:

B) Independent; the 1st marble selection will not affect the 2nd marble selection.

Step-by-step explanation:

When finding the probability of events in mathematics, we have both independent and dependent events.

Independent events are events that occur when the results of selection of the first events does not affect the results or outcomes of the second events.

Dependent events are the opposite of Independent events. They are events that occur when the results or outcomes obtained from the second events is affected by the results or outcomes from the selection of the first events.

From the question, we can see that the first event is she picked one marble from the bag. The second event is she replaced the marble before picking another marble. By doing this, the total number of possible outcomes for the probabilities of both events remains the same and they are unaffected.

Therefore, we can say that the two events are Independent because the 1st marble selection will not affect the 2nd marble selection.

4 0
3 years ago
Read 2 more answers
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