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Pavlova-9 [17]
3 years ago
10

 The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters a

t the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?
Mathematics
1 answer:
Allushta [10]3 years ago
7 0
I think the answer would be $3.06.
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Lin come complete 30 math problems in 2 hours. how do i make an expression for that
Blizzard [7]

Answer:

60(2)=30

Step-by-step explanation:

Happy Quarantining!

3 0
3 years ago
One number is 8 more than another number, and their sum is 20. Find the numbers.
melomori [17]

Answer:

First number=6

Second number=14

Step-by-step explanation:

Let the first number be x

So the second number is x+8

So the sum of the two is

X+x+8=20

2x+8=20

2x=20-8

2x=12

X=12/2

=6

The second number will x+8

So 6+8=14

First number=6

Second number=14

6 0
2 years ago
Read 2 more answers
The prism is completely filled with 1750 cubes that have edge length of 15 ft.
neonofarm [45]

The volume of the prism = 14 ft³

Solution:

Number of cubes in the prism = 1750

Edge length of each cube (a) = \frac{1}{5} ft

<u>To find the volume of each cube:</u>

Volume of each cube = a³

                                    $=\left(\frac{1}{5} \right)^3

Volume of each cube $=\frac{1}{125}  \ \text{ft}^3

<u>To find the volume of the prism:</u>

Volume of the prism = Volume of each cube × Number of cubes

                                  $=\frac{1}{125}  \ \text{ft}^3\times 1750

                                  = 14 ft³

The volume of the prism = 14 ft³

7 0
3 years ago
A card is picked at random from the following set. ​ ​What is P(9) ? Write your answer as a percentage in the box given below.
irina1246 [14]

Answer:

25%

Step-by-step explanation:

The (not mentioned in the question) set is: 6 7 8 9.

There are 4 total outcomes and only 1 favorable outcome, then the probability to pick a 9 is:

P(9) = favorable outcome/total outcomes

P(9) = 1/4 = 0.25 or 0.25*100 = 25%

4 0
2 years ago
PLZ HELP! 20 POINTS!!
ivann1987 [24]
Given list of values
A = {23, 34, 19, 10, 9, 20, 40, 43, 28, 29, 36, 13, 27, 23, 36, 37, 7}

Sort list A to get list B
B = {7, 9, 10, 13, 19, 20, 23, 23, 27, 28, 29, 34, 36, 36, 37, 40, 43}

The smallest value is 7, so the min is 7
The largest value is 43, so the max is 43

Look through list B to find the middle-most value. What you can do is cross off each pair of outer values (see figure 1 in the attached images) until you are left with the middle value
Or you can note how there are 17 values so the median is at slot 9 (there are 8 values below the median; 8 values above the median; the 8 is from 17/2 = 8.5)

Once you know the median is 27, we split the list B into two parts
The first part, we'll call it L for lower half is
L = {7, 9, 10, 13, 19, 20, 23, 23}
which is the list of all values lower or smaller than the median.
The median of list L is 16 because its the midway point between 13 and 19. We can compute (13+19)/2 = 32/2 = 16. This is the value of Q1

The upper half U is
U = {28, 29, 34, 36, 36, 37, 40, 43}
this list shows all the values larger than the median.
The value of Q3 is 36. We find the midpoint of 36 and 36 which is just 36.
The value of Q3 is the same as the median of list U

------------------------------------------------

Five Number Summary:
Min = 7
Q1 = 16
Median = 27
Q3 = 36
Max = 43

This five number summary is then used to construct the box-and-whisker plot. See figure 2 in the attached images. The diagram shows how each piece of the boxplot is put together (eg: the left edge of the box is the value of Q1). 

5 0
2 years ago
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