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3 years ago

7j+3-4j+9What us the answer to this problem

Mathematics

2 answers:

deff fn [24]3 years ago

7 0

3j +12 is the answer to the question, just add like terms.

FinnZ [79.3K]3 years ago

4 0

7j - 4j = 3j

3 + 9= 12

→Therefore, your answer would change to : 3j + 12

Or , you can put 3(J) + 12 :)

Just combine your like terms

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What is the factor of this problem?<br> ~plz help cannot get this wrong !

Aleonysh [2.5K]

Answer:

it should be 3x^2 +2

Step-by-step explanation:

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3 years ago

There is a 40% probability that a student PASSES their first statistics exam. Using a Binomial Distribution, if we randomly sele

melamori03 [73]

The probability that more than 5 students will pass their exam is 0.0188416.

<h3>How to find the probability?</h3>

The probability that a student passes their examination = 40% = 0.4

The probability that more than 5 students pass their statistics exam = Probability that 6 students pass their exam + Probability that 7 students pass their exam

The probability that 6 students pass their exam =

$7C_{6} (0.4)^{6} (0.6)^{1}\\=7(0.4)^6(0.6)\\=0.0172032$

The probability that 7 students pass their exam =

$7C_{7} (0.4)^{7} (0.6)^{0}\\=(0.4)^7\\=0.0016384$

The probability that more than 5 students pass their statistics exam = 0.0172032 + 0.0016384

= 0.0188416

Therefore, we have found the probability that more than 5 students will pass their exam to be 0.0188416.

Learn more about probability here: brainly.com/question/24756209

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2 years ago

What is the perimeter of quadrilateral ABCD? a(-3,2) b(4,2) c(3,-3) d(-3,3)

lord [1]

Answer:

Perimeter will be = 21.6

Step-by-step explanation:

As we know the formula to get the length between two points A and B having coordinates A(x,y) and B (a,b) is

AB = √(x-a)²+(y-b)²

We will use this formula to get the lengths of all sides of the quadrilateral.

AB=√(4+3)²+(2-2)² =√7² =7

BC = √(3-4)²+(-3-2)²=√(-1)²+(-5)² = √1+25=√26 = 5.1

CD = √(3+3)²+(-3-3)² = √6²+(-6)² = √72 = 8.5

DA = √(-3+3)²+(3-2)² =√1 = 1

Since perimeter of the quadrilateral = sum of lengths of all sides

Perimeter = 7 + 5.1 + 8.5 + 1 = 21.6

8 0

3 years ago

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