3 years ago

4xy + 10yᒾ Tui mún hỏii

Mathematics

1 answer:

slavikrds [6]3 years ago

3 0

Answer:

4xy+10y²=2y(2x+5y)

Hope it helps!!!

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Which equation has a solution of -2?

kykrilka [37]

Solution:

I'm not sure if there is law for it or not, but you can replace each x to -2 if both sides are equal then the equation is true.

$7x - 4 = 6x + 5\\7(-2) - 4 = 6(-2) + 5\\-14-4=-12+5\\-18\neq -7$

A. is incorrect.

$4x + 3 = 8x - 5\\4(-2) + 3 = 8(-2) - 5\\-8+3=-16-5\\-5\neq -21$

B. is incorrect.

$6x + 4 = 3x + 10\\6(-2) + 4 = 3(-2) + 10\\-12+4=-6+10\\-8\neq 4$

C. is incorrect.

$-5x - 3 = -7(x +1)\\-5(-2) - 3 = -7((-2) +1)\\10-3 =-7(-1)\\7=7$

D. is correct.

Answer:

D. $-5x-3=-7(x+1)$

<em>Hope this was helpful.</em>

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4 years ago

Graph the line that has a slope of -1.2 and passes through (-7, 4). Use graph paper.

Slav-nsk [51]

For graphing you would have to make sure your number line up with the y axis and the x axis

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3 years ago

HELP ASAP PLEASE!! The table shows the numbers of ships that visited a port in the past 5 years. Identify a polynomial function

shtirl [24]

Answer: the answer 2nd one

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3 years ago

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If u mix 2.5 cups of water with 1/3 cup of lemonade what would the answer be

schepotkina [342]

The total volume I suppose is what you are asking.
You can simplify this into 1/3 = .33
2.5 + .33 = 2.88 cups.

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4 years ago

Leah has sold magazine subscriptions worth $330 for a school fundraiser. If she reaches a total of $500, she wins a gift certifi

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You can solve by subtracting: 500-330

but I like to use mental math and think this way:
she has 330
70 more will give her 400
and 100 more will give her 500
100 + 70 is 170.

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4 years ago