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nika2105 [10]
3 years ago
5

How many different ways can 4 paintings be arranged in a row?

Mathematics
1 answer:
slavikrds [6]3 years ago
8 0
For this question, the order of the paintings matter, so we can use generic permutation formula.

P = n!/(n-r)!

where:
n= number of paintings
r = number of paintings we are picking (in this case, we are selecting all paintings, as we are rearranging the paintings)

P = 4!/(4-4)!
P = 24/0! = 24 ways

4 paintings can be arranged in 24 different ways.
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3.Find the area of Triangle and Parallelogram having base 13.5cm and height is 18cm.​
patriot [66]
  • Base=13.5cm
  • Height=18cm

\\ \sf\longmapsto Area=\dfrac{1}{2}Base\times Height

\\ \sf\longmapsto Area=\dfrac{1}{2}(18)(13.5)

\\ \sf\longmapsto Area=9(13.5)

\\ \sf\longmapsto Area=121.5cm^2

3 0
2 years ago
Abigail has $30.00 to buy groceries. She needs to buy some apples, some bananas, and 3 pounds of potatoes. Fuji apples are $1.79
Alenkinab [10]
C for change it is kinda obvious because change starts with a c and apples start with an a and bananas start with a b

3 0
3 years ago
Read 2 more answers
If you could answer both, that would be amazing:)
sveticcg [70]
The first question is “32.4”
I’ll come back if I find the other
7 0
2 years ago
Activity paper to answer
PIT_PIT [208]

Answer:

1.

a) 5cm

b) 16cm

c) 25cm

d) 124cm

2.

a) 4m

b) 6m

c) 10m

d) 26m

3.

a) 2km

b) 4km

c) 11km

d) 28km

Step-by-step explanation:

When you have a number and it tells you to round it to the nearest cm (m, km etc.), it means you just have to make it a whole number (integer) instead of a decimal by rounding it up or down.

To tell whether you round up or down, you look at the number after the decimal place and if it is under 5, you round down but if it is 5-9 you round up.

For example,

If we had 20.3 (not one of the questions) you would round it down to 20 because the 3 after the decimal place is smaller than 5.

However, if we had 24.7 you would have to round it up because the 7 is from 5-9.

Hope this helps :)

5 0
2 years ago
When we rewrite an expression so that it has no grouping symbols and all of the like terms have been combined, we ___ it.
Dmitriy789 [7]

Answer:

  "simplify"

Step-by-step explanation:

The notion of <em>simplifying</em> an expression depends on the expression. For the one offered as an example, the simplification steps required are eliminating parentheses and combining like terms.

Other possible simplification steps include combining fractions, reducing fractions, and rationalizing denominators (eliminating surds or complex numbers).

It appears the vocabulary word that is desired in the blank is <u>simplify</u>.

8 0
3 years ago
Read 2 more answers
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