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2 years ago

Distribute then combine like terms in the following: 2(2x - 3y) - 3(x - 2y - 4) 4

Mathematics

2 answers:

tiny-mole [99]2 years ago

5 0

Yeah what he said on top

nikdorinn [45]2 years ago

3 0

I think its:

2(2x-3y)-3(x-2y-4)4

4x-6y-3x-6y(4)

4x-6y-3x-24y

x-30y

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A cave explorer is at an elevation of negative 38 feet. The explorer starts moving at a rate of negative 12 feet per minute. Ide

Ksivusya [100]

Answer:

-38 - 12x < 200

Step-by-step explanation:

Given,

The original elevation = -38 feet,

Also, the explorer starts moving at a rate of negative 12 feet per minute.

So, the distance covered by explorer after x minutes = -12x feet,

Thus, the final elevation = original elevation + distance covered by explorer

= -38 - 12x

According to the question,

final elevation < -200 feet

⇒ -38 - 12x < 200

Which is the required inequality.

8 0

3 years ago

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- 7.5 divided by - 2.5

amm1812

-7.5 / -2.5 = 3

------------

8 0

3 years ago

Why would |3-6| be 3 instead of -3?

Delicious77 [7]

Because you can have a negative inside the absolute value so even if it is inside the absolute value of -3 will come out as 3.

6 0

3 years ago

May someone help me out with this please.

Fed [463]

I think The answer is 22.5

5 0

3 years ago

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If you draw a card with a value of 4 or less from a standard deck of cards, I will pay you 165$ if not your pay me $45. (Aces ar

jekas [21]

Answer: The required expected value is $3.46.

Step-by-step explanation:

Since we have given that

Number of value of 4 or less are

2,3,4

So, there are 12 in numbers.

So, probability would be

$\dfrac{12}{52}$

Since Aces are considered as the highest card in the deck.

So, remaining probability would be

$\dfrac{40}{12}$

Amount paid or value of 4 or less = $165

Amount not paid for other case = $45

So, the expected value would be

$\dfrac{12}{52}\times 165-\dfrac{40}{52}\times 45\\\\=\dfrac{1980}{52}-\dfrac{1800}{52}\\\\=\dfrac{180}{52}\\\\=3.46$

Hence, the required expected value is $3.46.

7 0

3 years ago