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aliina [53]
3 years ago
13

if c= the number of cars in a parking lot which algebaraic expression represents the phrase below the number of cars increased b

y 9
Mathematics
1 answer:
guapka [62]3 years ago
8 0

Answer:

C+9

Step-by-step explanation:

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"isotherms are drawn at regular intervals; on this map, the interval between successive isotherms is ______ fahrenheit degrees."
Marizza181 [45]

An isotherm on a geographic map is a type of equal temperature at a given date or time. And if we talk about thermodynamics, it is a curve on a Pressure – Volume diagram at a constant temperature.

 

Basing from the graph, we can actually see that the interval is:

 

10 <span>Fahrenheit degrees</span>

6 0
3 years ago
Mark and his 3 friends agreed to join the School’s talent show. They then decided how to pick the song that they will sing for t
laiz [17]

Answer:

  • 1/6

Step-by-step explanation:

In order to get to choose the song Mark needs to roll a 1 since a 2 is the smallest number already rolled.

<u>Probability of rolling a 1 is:</u>

  • P(1) = 1/6
8 0
3 years ago
The variance can never bea.zerob.larger than the standard deviationc.negatived.smaller than the standard deviation
MrRa [10]

Answer:

c.negative

True, by definition since the variance take in count the differences around the mean squared, then we can't have a negative value for a sum of square values.

Step-by-step explanation:

We need to remember that the variance is a measure of dispersion for a dataset respect to a measure of central tendency called the mean. The mean is defined as:

\bar x = \frac{\sum_{i=1}^n X_i}{n}

And the population mean is given by:

\mu= \frac{\sum_{i=1}^n X_i}{N}

The population variance is defined by:

\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}

And the sample variance is defined as:

s^2= \frac{\sum_{i=1}^n (X_i -\bar x)}{n-1}

Now if we analyze the options we have this:

a.zero

False, if all the values are the same then the mean would be the same to the values and the difference between each value and the mean would 0 and indeed the variance would be 0.

b.larger than the standard deviation

False, if the population standard deviation is \sigma=2 then the variance would be \sigma^2 = 4 and as we can see is higher than the standard deviation

c.negative

True, by definition since the variance take in count the differences around the mean squared, then we can't have a negative value for a sum of square values.

d.smaller than the standard deviation

False, if the population standard deviation is \sigma=0.1 then the variance would be \sigma^2 = 0.01 and as we can see is lower than the standard deviation

7 0
3 years ago
The cargo of the truck weighs less than 2,800 pounds. Use w to represent the weight (in pounds) of the cargo.
MakcuM [25]

Answer:

w < 2,800lb

Step-by-step explanation:

w weighs less than 2,800 pounds.

5 0
3 years ago
Robin has a table full of supplies that she will use to decorate picture frames. She decorated one frame with 3 buttons and 12 b
TiliK225 [7]
The ratio is 1:4
She could use 4 gems and 16 flowers 4 x 4 = 16 7 stickers and 28 glue dots 7 x 4 = 28
8 0
3 years ago
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