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vampirchik [111]
3 years ago
11

18x (14 - 9) ÷[12 - (19 - 13)] = what is the answer​

Mathematics
1 answer:
marysya [2.9K]3 years ago
5 0

Answer:

15

Step-by-step explanation:

18 . ( 14 - 9 ) ÷ [ 12 - ( 19 - 13 ) ]

18 . ( 5 ) ÷ [ 12 - 6 ]

90 ÷ 6

15

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On a multiple choice test, if you randomly guessed on three questions, then what is the probability you got at least one of them
snow_lady [41]

Answer:

Number of Questions =3

Probability of giving a correct answer

                              =\frac{1}{3}

Probability of giving two correct answers

                       =\frac{2}{3}

Probability of giving all correct answers

            =\frac{3}{3}\\\\=1

Probability that at least one of them is correct

         =_{1}^{3}\textrm{C}\\\\=\frac{3!}{(3-1)! \times1!}\\\\=3 \text{ways}\\\\=\frac{1}{3} \times \frac{1}{3} \times \frac{1}{3} \\\\=\frac{1}{27}

Probability that two of them is correct

         =_{2}^{3}\textrm{C}\\\\=\frac{3!}{(3-2)! \times2!}\\\\=3 \text{ways}\\\\=\frac{2}{3} \times \frac{2}{3} \times \frac{2}{3} \\\\=\frac{8}{27}

Probability that all of them is correct

         =_{3}^{3}\textrm{C}\\\\=\frac{3!}{(3-3)! \times3!}\\\\=1 \text{way}\\\\=1

So, Required probability

         =\frac{1}{27} \times \frac{8}{27} \times 1\\\\=\frac{8}{729}

6 0
3 years ago
What else would need to be congruent to show that ABC is equal to XYZ by ASA
andre [41]

Answer:

If the shapes are congruent to each other by rigid transformations (probably).

8 0
2 years ago
Write and solve inequality for the verbal statement or problem. Let x = unknown number
UkoKoshka [18]

Answer: 60

Step-by-step explanation:

X can represent any number as long the product of 5 times x is less than 75. So for example, you can say, x5<75

X = 12


12 x 5 = 60


this is my first answer lol hope this helps in a way!

3 0
2 years ago
Please help due in 5 minutes
soldier1979 [14.2K]

Answer:

(-1,-2)

Step-by-step explanation:

There is a solution where the two expressions intersect. We can plug in what we know in the first equation in the second.

x= -1

y=3x+1

y= 3(-1)+1

y= -3+1

y= -2

Plugging y value in the equation to find x:

-2=3x+1

-3=3x

x= -1

Therefore, the point is (-1,-2)

<em>I hope this helps! :)</em>

5 0
3 years ago
Read 2 more answers
Consider the polynomial how many terms are there​
garri49 [273]

Answer: 6 terms

Step-by-step explanation:

The terms are 7kn, 2k^2, -2k, -2n, -5, and 5n^2.

6 0
3 years ago
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