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3 years ago

If 4 sandwich rolls cost $0.64,how much will 21 rolls cost ?

Mathematics

1 answer:

Sveta_85 [38]3 years ago

5 0

Answer:

$3.36

Step-by-step explanation:

1. Divide $0.64 by 4 to get the cost of each sandwich roll, $0.16.

2. Multiply $0.16 by 21, $3.36.

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A city police officer using radar checked the speed of 26 cars as they were travelling down a city street and the data is given

pychu [463]

Answer: The distribution of the data set is positively skewed.

<u>Explanation: </u>

In order to see whether the given data set is symmetric, positively skewed or negatively skewed, we will find the mean, median and mode of the given data set.

For symmetric distribution, $Mean = Median=Mode$

For positively skewed distribution, $Mean > Median>Mode$

For negatively skewed distribution, $Mean < Median$

The mean of the given data set is given below:

$Mean = \frac{27+23+22+38+43+24+25+23+22+54+31+30+29+48+27+25+29+28+26+33+25+21+23+34+20+23}{26}$

$=\frac{753}{26}$

$=28.96$

Now, the Median is:

To find the median we need to sort the data in ascending order as:

$20,21,22,22,23,23,23,23,24,25,25,25,26,27,27,28,29,29,30,31,33,34,38,43,48,54$

$Median=\left(\frac{N+1}{2} \right)^{th} item$

$=\left(\frac{26+1}{2}\right)^{th} item$

$=13.5^{th} item$

$=26+0.5 \times (27-26)$

$=26.5$

$\therefore Median = 26.5$

The mode is the most frequently occurring observation. Therefore the mode is:

$Mode=23$

Since the $Mean >Median>Mode$ , therefore the distribution of the given data set is positively skewed.

5 0

4 years ago

the cost to rent a jet ski is $80 per hour. you must also pay a flat fee of $25 for a lesson on how to use the jet ski. write th

motikmotik

Y=mx+b
y=80x+25
for every hour you must pay 80$
how many hours is X
and B is the rate you must pay anyway for the lesson and how many hours you have rented.

4 0

4 years ago

How many leaves on a tree diagram are needed to represent all possible combinations tossing a coin 4 times?

AlekseyPX

1/2 x 1/2 x 1/2 x 1/2 = 1/16

Answer: 16

7 0

3 years ago

This is 5th grade math pls help

Mamont248 [21]

Answer:

He can make 20 cakes

Step-by-step explanation:

Im in highshool so I know the answer

3 0

3 years ago

Read 2 more answers

Help please. (right now i’m just filling in for the 20 characters it’s not relevant to the question)

suter [353]

Answer:

Step-by-step explanation:

We're using the Pythagorean theorem here since it's a right triangle.

a^2 (side) + b^2 (side) = c^2 (hypotenuse)

12 = a

x = b

15 = c

12^2 + b^2 = 15^2

144 + b^2 = 225

- 144 - 144 (subtracting 144 from both sides to isolate b)

b^2 = 81

$\sqrt{b^2} = \sqrt{81}$ (getting rid of the exponent by squaring both sides)

b = 9

x = 9

8 0

3 years ago