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Aleks04 [339]
3 years ago
5

"absmiddle" class="latex-formula">
PLZ HAAALPPP​
Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
4 0

Answer:

y=19

Step-by-step explanation:

3(y - 9) = 30

3y - 27 = 30

       3y = 30 + 27

       3y = 57

         y = 19

brainliest?

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Which expression is equivalent to (18)2⋅(19)2
sladkih [1.3K]

The expression that is equivalent to the given expression where the expression is given as (18)2⋅(19)2 is (18 * 19)^2

<h3>How to determine which expression is equivalent to the given expression? </h3>

The expression is given as

(18)2⋅(19)2

Rewrite the above expression properly

So, we have

(18)^2 * (19)^2

The factors in the above expression have the same exponent.

So, the expression can be rewritten as

(18 * 19)^2

Hence, the expression that is equivalent to the given expression where the expression is given as (18)2⋅(19)2 is (18 * 19)^2

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brainly.com/question/2972832

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Answer: (x + [-1], y + [1])

Step-by-step explanation:

      <em>See attached. </em>We can draw, or picture it in our heads, what the reflection would look like. Then we can pick one (or multiple to test) points and see the translation.

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Whats 9+10? dont answer wrong
ozzi

19

Step-by-step explanation:

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Suppose that two teams play a series of games that ends when one of them has won ???? games. Also suppose that each game played
Musya8 [376]

Answer:

(a) E(X) = -2p² + 2p + 2; d²/dp² E(X) at p = 1/2 is less than 0

(b) 6p⁴ - 12p³ + 3p² + 3p + 3; d²/dp² E(X) at p = 1/2 is less than 0

Step-by-step explanation:

(a) when i = 2, the expected number of played games will be:

E(X) = 2[p² + (1-p)²] + 3[2p² (1-p) + 2p(1-p)²] = 2[p²+1-2p+p²] + 3[2p²-2p³+2p(1-2p+p²)] = 2[2p²-2p+1] + 3[2p² - 2p³+2p-4p²+2p³] =  4p²-4p+2-6p²+6p = -2p²+2p+2.

If p = 1/2, then:

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(b) when i = 3;

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if p = 1/2, then:

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Therefore, E(X) is maximized.

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