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strojnjashka [21]
2 years ago
10

Using identities, find a)(2 + 3) 2 b) (x+2y) (x-2y)​

Mathematics
1 answer:
shutvik [7]2 years ago
5 0
Pop ok you see so the answer here would be frantically elastic
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What is the area of the parallelogram? Show your work. (5 points)
stepan [7]
Part A. The formula for finding the area of a parallelogram is A=bh where A is the area, b is the base and h is height.
A=bh where b=8 feet ,h=3/4 foot and A=?
A=8*3/4
A=6 feet The area of the parallelogram is 6 feet square
Part B.You can decompose a parallelogram into two triangles by drawing a diagonal from one end to the another.The formula for finding the area of each triangle is A= 1/2bh where A is area b is base and h is height.Therefore:
A=1/2bh where b=8 h is 3/4 and A=?
A=1/2*8*3/4
A=3 feet square. Therefore the area of each triangle is 3 feet square.


4 0
3 years ago
Veronica randomly surveyed a group of students to find out how they arrived at school that
Finger [1]

Answer:A

Step-by-step explanation:

-Long way

1.) Add all the numbers of people together (60)

2.) Divide all the students aka.540 by 60. (9)

3.) Multiply 9 by all the numbers.

=Answer for all. (Double check)

-Mental math

1.) look at chart

2.) compare 8 and 7

3.) figure out which is larger.

=Answer of A

8 0
3 years ago
If there are 30 boys and 50 girls in a room, fill out all of the possible ratios of boys to girls that could be made. They alrea
goldfiish [28.3K]

Answer:

3:5

60:100

90:150

120:200

15:25

150:250

180:300

210:350

7 0
3 years ago
The average score on a standardized test is 750 points with a standard deviation of 50 points. What is the probability that a st
nalin [4]
The probability that student scored more than 850 we shall proceed as follows:
z=(x-μ)/σ
where:
x=850
μ=750
σ=50
thus
z=(850-750)/50
z=2
thus
P(x>850)=1-P(x<850)=1-P(z<2)=1-0.9772=0.0228

Answer: P(x>850)=0.0228
4 0
2 years ago
Read 2 more answers
Assume that a procedure yields a binomial distribution with a trial repeated n = 5 times. Use some form of technology to find th
Digiron [165]

Answer:

P(X = 0) = 0.0263

P(X = 1) = 0.1407

P(X = 2) = 0.3012

P(X = 3) = 0.3224

P(X = 4) = 0.1725

P(X = 5) = 0.0369

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 5, p = 0.517

Distribution

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{5,0}.(0.517)^{0}.(0.483)^{5} = 0.0263

P(X = 1) = C_{5,1}.(0.517)^{1}.(0.483)^{4} = 0.1407

P(X = 2) = C_{5,2}.(0.517)^{2}.(0.483)^{3} = 0.3012

P(X = 3) = C_{5,3}.(0.517)^{3}.(0.483)^{2} = 0.3224

P(X = 4) = C_{5,4}.(0.517)^{4}.(0.483)^{1} = 0.1725

P(X = 5) = C_{5,5}.(0.517)^{5}.(0.483)^{0} = 0.0369

6 0
3 years ago
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