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Mademuasel [1]
3 years ago
5

What is the x intercept of 3x+2y=15

Mathematics
2 answers:
Mariana [72]3 years ago
3 0

Answer: 5

Step-by-step explanation: 3x=15 x=5.

ladessa [460]3 years ago
3 0

3x + 2y = 15

3x = 15 - 2y

x =  \frac{15 - 2y}{3}

x =   \frac{ - 2y}{3}  + 5

x =  -  \frac{2y}{3}  + 5

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Step-by-step explanation:

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Read 2 more answers
1. Write out the law of cosines and find the hypotenuse of triangle with 2 sides lengths equal to three and the included angle m
LUCKY_DIMON [66]

Answer:

1.) \sqrt{13.341}  ≈ 3.652

2.) I would say something about how the A in front of cos in the equation would change to 90, rather than stay 75 (in the equation for the step by step), but it would be easier to just use the Pythagorean theorem.

Step-by-step explanation:

I think we may have the same class so hopefully this helps:

1.) a^2 = b^2 + c^2 - 2bccosA --> law of cosines formula.

   a^2 = 3^2 + 3^2 - 2(3)(3)cos(75) --> plugged in numbers; when you draw the triangle, the included angle would be A, and the opposite side would be a. B and b, and C and c are opposite each other. In this case, a is the hypotenuse.

   a^2 = 18 - 18cos75 --> in between steps.

   a^2 = 13.341 --> more simplifying.

   a(hypotenuse) = \sqrt{13.341} or 3.652 --> answer

2.) This one is just an explanation: The 75 in the equation is the given angle, which is a. If this changes, it would just change in the equation too. And obviously, if it's 90 degrees, you can just use Pythagorean theorem a^2+b^2=c^2.

Good luck! :)

   

6 0
3 years ago
I need help with this question
aalyn [17]
The first step is to square root both sides to get the exponent out. that actually is the only step :)
5 0
3 years ago
3-12t+8t simplify each Expression
kakasveta [241]
Combine the like terms:

3 - 12t + 8t = 3 - 4t

simplified answer is

-4t + 3
3 0
3 years ago
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