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3 years ago

Find the slope and y-intercept of the equation 4x+5y=-9

Mathematics

1 answer:

Vesnalui [34]3 years ago

6 0

Yo sup??

4x+5y=-9

y=(-4x)/5-9/5

we see that this is of the form y=mx+c

where m is the slope

therefore the slope of the line is -4/5

To find y intercept, put x=0

y=-4*0/5-9/5

y=-9/5

Therefore y intercept is -9/5

Hope this helps.

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Answer: x = -30

Steps: 19 + x/2 = 4

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3 years ago

The area of a rectangular wall of a barn is 252 square feet. Its length is 10 feet longer than twice its width. Find the length

valentinak56 [21]

Answer: Length = 28 feet and width = 9 feet

Step-by-step explanation:

Let x = width of the wall.

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$252= (10+2x)x\\\\\Rightarrow\ 252=10x+2x^2\\\\\Rightarrow\ 2x^2+10x-252=0\\\\\Rightarrow\ x^2+5x-126=0\\\\\Rightarrow\ x^2+14x-9x-126=0\\\\\Rightarrow\ (x+14)-9(x+14)=0\\\\\Rightarrow\ (x+14)(x-9)=0\\\\\Rightarrow\ x=-14 \ or \ x= 9$

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An expression is given (3^2)^3•3^6/3^4

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Hopes this if it doesn’t I any so sorry if I got it wrong:

Answer: 6561

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Answer

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Step-by-step explanation

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hope this helped!

have an awesome day :D

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