9x + 3y = 4 7x + 3y = 20

Mathematics

1 answer:

xeze [42]3 years ago

5 0

Answer:

x=-8, y=76/3

Step-by-step explanation:

I solved for substitution since I didn't know exactly what you're solving for.

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NEED HELP ASAP!!!<br> DUE BY 5

Paraphin [41]

Answer:

86m^2

Step-by-step explanation:

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3 years ago

Find an equation of the tangent line to the hyperbola y = 3/x at the point (3, 1).

Vesna [10]

Let's find the derivative of that hyperbola in order to find a slope formula to help us with this equation. We already have an x and y value. The derivative is found this way: $y'= \frac{x(0)-3(1)}{x^2}$ so $y'=- \frac{3}{x^2}$ . The derivative supplies us with the slope formula we need to write the equation. Sub in the x value of 3 to find what the slope is: $y'=- \frac{3}{3^2}=- \frac{3}{9}=- \frac{1}{3}$ . So in our slope-intercept equation, x = 3, y = 1, and m = -1/3. Use these values to solve for b. $1=- \frac{1}{3}(3)+b$ so b = 2. The equation, then, for the line tangent to that hyperbola at that given point is $y=- \frac{1}{3}x+2$

6 0

3 years ago

16+ greater or less than+19

saul85 [17]

By 16+ do you mean positive 16 because if you do then it is less than 19+

7 0

3 years ago

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I how do I do this ?!??

stiv31 [10]

Answer:

m = -3/2 and b = 4

Step-by-step explanation:

m = slope and u go down 3 and over 2 so its -3/2

b = your y intercept and its intercepting through 4 on the y-axis

5 0

3 years ago

Mr. and Mrs. Parker's bed is 2 1/3 yards wide. That also have 2 nightstands that are 22 inches wide. The bedroom wall is 12 1/2

vampirchik [111]

Conversions: to smallest (inches)
n= 22 inches
b= 2 1/3 yard = 84 inches
t= 12 1/2 feet = 150 inches

total space = t
night stand = n (2n for two nightstands)
bed=b

b+2n has to be < or = to t

84+2(22)=x
84+44=128
128 is < 150

therefore the answer is yes they will fit with 22 inches left over.

3 0

2 years ago

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