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nevsk [136]
3 years ago
9

the cost of parking of an hourly lot can be represented by the following equation y=3x+2. what does the 3 tell you about the cos

t of parking
Mathematics
2 answers:
Vilka [71]3 years ago
7 0

Answer:

The hourly cost for parking

Step-by-step explanation:

The equation is given in the slope intercept form; which means the "3" in front of the x means the cost for parking is 3 and x will be the amount of hours; just like the slope m in the equation y = mx + b

vitfil [10]3 years ago
5 0
3 is How many hours they spent in the parking lot.
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If 20 chickens laid 120<br> eggs. At this rate, how<br> many eggs would 30<br> chicken lay?
svetoff [14.1K]

Answer:

180 eggs is the correct amount.

6 0
3 years ago
Two angles are supplementary. One angle has a measure that is five less than four times the other. What is the measure of the la
iren [92.7K]

Answer:

The larger angle is 143

Step-by-step explanation:

x + y = 180 (This is the meaning of supplementary. Two angles make up 180 degrees)

4x - 5 = y

x + (4x - 5) = 180            Remove the brackets.

x + 4x - 5 = 180

5x - 5 =  180                  Add 5 to both sides

5x - 5 +5 = 180 + 5       Combine

5x = 185                        Divide by 5

5x/5=185/5

x = 37

y = 4*37 - 5

y = 148 - 5

y = 143

4 0
2 years ago
For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 50
Volgvan

Answer:

P(\bar X>530)=1-0.808=0.192

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".  

Let X the random variable that represent the scores, and for this case we know the distribution for X is given by:

X \sim N(\mu=505,\sigma=170)  

And let \bar X represent the sample mean, the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

On this case  \bar X \sim N(505,\frac{170}{\sqrt{35}})

2) Calculate the probability

We want this probability:

P(\bar X>530)=1-P(\bar X

The best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

If we apply this formula to our probability we got this:

P(\bar X >530)=1-P(Z

P(\bar X>530)=1-0.808=0.192

3 0
3 years ago
If 6x-4 is 11 less than 25,what is the value of 9x
sashaice [31]

Answer:

27

Step-by-step explanation:

If 6x-4 is 11 less than 25, what is the value of 9x can be rewritten as:

6x-4=25-11, what is the value of 9x?

Let's solve for x first by using the given information: 6x-4=25-11

1. 6x-4=25-11

2. 6x-4=14

3. (isolate x by adding 4 on both sides) 6x=18

4. x=3

The question asks for the value of 9x. Since we know x=3...

9x=9 times 3=27

9x=27

6 0
3 years ago
Please answer honestly : )
FrozenT [24]

Answer:

D) J

B) point Q

Step-by-step explanation:

we know that the ginipigs are only given 80 in total. that means 80 is 100%

40÷80*100=50%

20÷80*100=25%

10÷80*100= 12.5%

10÷80*100= 12.5%

all this together is 100%

meaning the best answer is

Q is the only place that = -1/2

3 0
3 years ago
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