3 years ago

What is the slope of the line passing through the point (-3,-1) and the origin?

Mathematics

1 answer:

topjm [15]3 years ago

4 0

The slope is rise of 1, run of 3 so 1/3. In an equation it would be y = 1/3x

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A biologist studying the relationship between tilapia and catfish in a pond finds that the ratio of tilapia to catfish is 6:20.

Neko [114]

Answer: 9 tilapia

Step-by-step explanation:

The ratio of 6:20 for tilapia to catfish means that for every six tilapia, there are 20 catfish in the pond.

If there are 30 catfish, use direct proportion to find out the number of tilapia:

6 : 20

x : 30

Cross multiply:

20x = 180

x = 180 / 20

x = 9 tilapia

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3 years ago

If 7x + 3 = 24, what is the value of 5 - 4x?

Iteru [2.4K]

Answer:

Step-by-step explanation:

7x + 3= 24

7x= 24-3

7x= 21

x= 21/7

x= 3

Then we have that

5-4x

5-4(3)

5-12

Answer= -7

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3 years ago

A plant 3 inches tall grows an average of 0.5 inches each month. Which equation models the heigh h after x months

anzhelika [568]

Answer:H = 3 + 0.5x

Step-by-step explanation:

This would be H = 3 + 0.5x

5 0

3 years ago

A random sample of 45 door-to-door salespersons were asked how long on average they were able to talk to the potential customer.

dimulka [17.4K]

Answer:

b. =8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Step-by-step explanation:

Sample size (n) = 45

Sample mean (M) = 8.5 minutes

Variance (V) = 9 minutes

Z-score for a 95% confidence interval (z) = 1.96

A confidence interval is defined by the following expression:

$M\pm z\sqrt{\frac{V}{n} }$

Applying the given data:

$8.5\pm 1.96\sqrt{\frac{9}{45} }\\8.5\pm 1.96\frac{3}{\sqrt 45}$

Writing in Excel statements, the limits of the interval would be

=8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Therefore, the answer is alternative b.

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3 years ago

According to the graph what is the value of the constant in the equation below

emmainna [20.7K]

#A is the highest if you look at it, it says height=Constant x Width so that is your answer

5 0

3 years ago

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