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Nadya [2.5K]
3 years ago
11

Expand the polynomials and simplify. (2x+3y)^2

Mathematics
1 answer:
astra-53 [7]3 years ago
6 0

Answer:

4x^2+12xy+9y^2

Step-by-step explanation:

brainliest

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A random sample of 2 measurements is taken from the following population of values: 0, 1, 3, 4, 7. What is the probability that
mafiozo [28]

Answer:

1/5

Step-by-step explanation:

Range as a measure of central tendency is the difference between the highest value and the lowest value in a given set of data.

Given the samples 0,1,3,4,7

Total number of samples is 5

The range is gotten by taking the difference of 2 samplesout of 5samples and this can be done in 5C2 ways.

5C2 = 5!/(5-2)!2!

= 5!/3!2!

= 5×4×3!/3!×2

= 10ways

The total outcome is therefore 10

To get the probability that the range is 4, we need to get the required outcome of getting range of 4 and this can only occur twice

The range can be gotten by taking the difference between 7 and 3, it can also be gotten by taking the difference between 4 and 0. Both differences will give us a total of 4

The expected outcome is therefore 2

the probability that the range of the sample is 4 = expected outcome/total outcome

= 2/10

= 1/5

7 0
3 years ago
5-2 ????=7-5 ???? which value of x is the solution to the above equation?
saw5 [17]
5-2x=7-5x
-2x+5x=7-5
3x=2
X=2/3
8 0
3 years ago
A has coordinates (1,1) and B has coordinates (4,3). if AB is a side of a square, what is the area of the square?
kvasek [131]
Area of the square:
A = s²
and s = AB = sqrt ( ( 4 - 1 )² + ( 3 - 1 )² )
s = √ ( 9 + 4 ) = √ 13
A = ( √13 )² = 13
Answer: Area of the square is 13 units².
8 0
3 years ago
A the bead shop, there are 25 rows of beads. If there are 320 beads in each row, how many beads are in the shop?
chubhunter [2.5K]
The answer would be 8,000 because one row = 320 beads, and 25x320=8,000
5 0
3 years ago
The point ( -6 , 8 ) is reflected across the y axis. What is the coordinates of the reflection
Digiron [165]

The new coordinations would be (6,8)

6 0
3 years ago
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