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shtirl [24]
4 years ago
5

What conic section is this 4x^2 +9y^2 =81?

Mathematics
1 answer:
Contact [7]4 years ago
3 0
This follows the base equation of a circle:

(x - h)^2 + (y - k)^2 = r^2

both of the variables are squared, and they're being added--you've got a circle.
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11. The student government is selling flowers for homecoming. The project costs them $20 for advertising and
MatroZZZ [7]

Answer:

32

Step-by-step explanation:

  • 3(n+20) = 3(4+20) = 3(24) = 72
  • 3n+20 = 3(4)+20= 12+20=32

If n represents the amount of flowers they sold, then the correct answer should be 32. The cost for each flower they sold would be 3 x 4 and then add $20 for advertising.

8 0
3 years ago
We can describe 3x-2 as an expression.
777dan777 [17]

Answer:

3 and -2 is a terms and the x is the unknown

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
(8x2 + 8x) – (-9x2 + 8x)
BigorU [14]

Answer:

17 x^2

Step-by-step explanation:

(8x^2 + 8x) – (-9x^2 + 8x)

Distribute the minus sign

8x^2 + 8x + 9x^2 - 8x

Combine like terms

17 x^2 +0x

17x^2

3 0
3 years ago
Read 2 more answers
PLS ANSWER THIS QUESTION I NEED HELP Will give brainliest
TEA [102]

Answer:

A

Step-by-step explanation:

A, because it has two points which have the same x-value but different y-values, so it cannot be a function.

5 0
3 years ago
Find the equation of the line passing through the points (-2/3,1) and (-2,1/2). Write the equation in standard form.
7nadin3 [17]
Standard form is y = mx + b.
To find the slope, m, we must find the 'rise over run,' or the difference in y divided by the difference in x. We do this by:
\frac{y1 - y2}{x1 - x2}  =  \frac{ (-  \frac{2}{3} ) - ( -2 )}{(1) - ( \frac{1}{2} ) } =  \frac{ \frac{4}{3} }{ \frac{1}{2} } \\  =  \frac{4}{3}  \times  \frac{2}{1}  =  \frac{8}{3}
Therefore, the slope is 8/3.

To find b, we must plug in the slope and one point:
(1) = ( \frac{8}{3} )( -  \frac{2}{3} ) + b \\ 1 =  -  \frac{16}{9}  + b \\  \frac{25}{9}  = b
Therefore, b is 25/9, and the total equation is
y =  \frac{8}{3} x +  \frac{25}{9}
3 0
3 years ago
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