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2 years ago

210÷[5+16÷2{6−18÷(7+2)}]−15

Mathematics

2 answers:

svlad2 [7]2 years ago

3 0

Step-by-step explanation:

210 ÷ [ 5 + 16 ÷ 2 { 6 - 18 ÷ ( 7 + 2 ) } ] - 15

210 ÷ [ 5 + 16 ÷ 2 { 6 - 18 ÷ 9 } ] - 15

210 ÷ [ 5 + 16 ÷ 2 { 6 - 2 } ] - 15

210 ÷ [ 5 + 16 ÷ 2 { 4 } ] - 15

210 ÷ [ 5 + 16 ÷ 8 ] - 15

210 ÷ [ 5 + 2 ] - 15

210 ÷ 7 - 15

30 - 15

$...$

valentinak56 [21]2 years ago

3 0

Answer:

$-\frac{345}{37}$

Step-by-step explanation:

Just follow the order of operations

210÷[5+16÷2{6−18÷(7+2)}]−15

= 210÷[5+16÷2{6−18÷9}]−15 (calculate 7+2)

= 210÷[5+16÷2{6−2}]−15 (calculate 18÷9)

= 210÷[5+16÷2{4}]−15 (calculate 6-4)

= 210÷[5+16÷2×4]−15

= 210÷[5+8×4]−15 (calculate 16÷2)

= 210÷[5+32]−15 (calculate 8×4)

= 210÷[37]−15 (calculate 5+32)

= 210÷37−15

= 210÷37−(15×37)÷37 (put on the same denominator)

= 210÷37−555÷37 (calculate 15×37)

= (210−555)÷37

=-345÷37 (calculate 210-555)

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The decreasing value of car 1 can be represented by an exponential function and car 2 by a linear function

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There is a significant difference of $1100.40 in value.

Step-by-step explanation:

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Pani-rosa [81]

This problem can be solved using probability, the equation of the probability of an event A is P(A)= favorable outcomes/possible outcomes. The interception of two probable events is P(A∩B)= P(A)P(B).

There are 12 black marbels, 10 red marbles, and 18 white marbels, all the same size. If two marbles are drawn from the jar without being replaced.

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If two marbles are drawn from the jar without being replaced, what would the probability be:

1. of drawing two black marbles?

The probability of drawing one black marble is (12/40). Then, the probability of drawing another black marble after that is (11/39) due we drawing one marble before.

P(Black∩Black) = (12/40)(11/39) = 132/1560, simplifying the fraction:

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2. of drawing a white, then a black marble?

The probability of drawing one white marble is (18/40). Then, the probability of drawing then a black marble after that is (12/39) due we drawed one marble before.

P(White∩Black) = (18/40)(12/39) = 216/1560, simplifying the fraction:

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3. of drawing two white marbles?

The probability of drawing one white marble is (18/40). Then, the probability of drawing another white marble after that is (17/39) due we drawed one marble before.

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The probability of drawing one black marble is (12/40). Then, the probability of drawing then a red marble after that is (10/39) due we drawed one marble before.

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recall that the slope - intercept form of a linear equation can be given as

y = mx + b

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in our case, we are given that slope, m = 10/7, hence our equation becomes

y = (10/7) x + b

since we are not given any information about the y-intercept, we can simply pick a value for b that is most convenient for us.

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210÷[5+16÷2{6−18÷(7+2)}]−15​

210÷[5+16÷2{6−18÷(7+2)}]−15