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rusak2 [61]
3 years ago
14

It’s multiple choice , please help me !

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
3 0
Answer: a, c, e explanation: I did that test and got 100%
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Find the values of e, a, b, and c for r = 24/(4 + 2sin theta)
Kaylis [27]

Answer:

Step-by-step explanation:

r=24/(4+2sin θ)

4r+2r sin θ=24

divide by 2

2r+r sin θ=12

2√(x²+y²)+y=12

2√(x²+y²)=12-y

squaring

4(x²+y²)=144-24y+y²

4x²+3y²+24y=144

4x²+3(y²+8y+16-16)=144

4x²+3(y+4)²-48=144

4x²+3(y+4)²=144+48

4x²+3(y+4)²=192

divide by 192

\frac{x^2}{48}+\frac{(y+4)^2}{64}=1

which is an ellipse with centre(0,-4) major axis on y-axis.

a^2=64\\a=8\\major axis=2*8=16\\b^2=48\\b=4\sqrt{3}\\minor ~axis=2*4 \sqrt{3}=8 \sqrt{3}\\b^2=a^2(1-e^2)\\48=64(1-e^2)\\1-e^2=48/64=3/4\\e^2=1-3/4=1/4\\e=1/2\\c^2=a^2-b^2\\c^2=64-48=16\\c=4

7 0
4 years ago
Factorise x^2+11x+18
Semenov [28]

Answer:

(x + 9)(x + 2 )

Step-by-step explanation:

Sum =11

Product = 18

Factors = 9 , 2

When you multiply (9*2 = 18) and when you add (9 +2 = 11).

x² + 11x + 18 = x² + 9x + 2x + (9*2)

                   =x(x + 9) + 2(x + 9)

                  = (x + 9)(x + 2 )

4 0
3 years ago
Read 2 more answers
What is the slope of this line
ohaa [14]
Slope-intercept form is given by y = mx + b. m represents the slope of the equation, and b represents the y-intercept.

m = 10.322

The slope is 10.322.
6 0
3 years ago
Please help 30 points and brainless
Ganezh [65]

Answer:

Stats. for a basketball game and the graph could be a bar graph or could be a line graph. And yes the data would look good on a graph.

Step-by-step explanation:

I'm familiar with these types of problems.

3 0
3 years ago
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4(x−2+y)=4, left parenthesis, x, minus, 2, plus, y, right parenthesis, equals
vodomira [7]

Answer:

y =  - x + 3

Step-by-step explanation:

4(x - 2 + y) = 4 \\ 4x - 8 + 4y = 4 \\ 4x + 4y = 12 \\ x + y = 3 \\ y =  - x + 3

5 0
3 years ago
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