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Elena L [17]
3 years ago
9

Please I need help!!!

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0
Isolate y in the first equation.

2y = 10x

y = 5x

--------------------------

Then plug this into the second equation

\frac{x^2}{64}-\frac{y^2}{36} = 1

\frac{x^2}{64}-\frac{(y)^2}{36} = 1

\frac{x^2}{64}-\frac{(5x)^2}{36} = 1

\frac{x^2}{64}-\frac{25x^2}{36} = 1

--------------------------

So the final answer is choice A

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vlada-n [284]

1.

(3^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=27\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=-x^2+11x+26

or if you mean (3x^3+5x^2+3x-7)+(8x-6x^2+6):

(3x^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=3x^3\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=3x^3-x^2+11x-1

2.

(8x-4x^2+3)-(x^3+7x^2+3x-8)=\\\\=\underline{8x}\ \underline{\underline{-\ 4x^2}}+3-x^3\ \underline{\underline{-\,7x^2}}\ \underline{-\,3x}+8=\\\\=-x^3-11x^2+5x+10

3 0
3 years ago
Write an eqaution in slope-intercwpt form for the line with slope -5 and y-intercept 9
DerKrebs [107]

Answer:

y = -5x + 9

Step-by-step explanation:

Slope-intercept form of an equation is:

y = mx + b

Since they gave you the slope and y-intercept, it is kind of a fill-in-the-blank problem. Nothing to calculate!

Fill in the slope for the m. Fill in the y-intercept for the b.

y = -5x + 9

6 0
2 years ago
What is 5 3/4 times 2/6? I am doing math homework and need help
Jobisdone [24]
53/4•2/6=1 11/12
Because you must turn 5 3/4 into an improper fraction. So 23/4•2/6. Next you are able to cross reduce because 2 goes into 2 and four so now you have 23/2•1/6 now just multiply across. 2•6=12 and 23•1=23 so now you have 23/12 which equals
1 11/12
6 0
3 years ago
Read 2 more answers
What is the image of A under the translation described by the translation rule (x, y)---&gt;(x + 4, y - 10)?
Mademuasel [1]

Translation rule (x, y)--->(x + 4, y - 10)

Object A = (5, 6)

Apply rule:

(5, 6)---->(5 + 4, 6 - 10) = (9, -4)

Image A' = (9, -4)

Option 3: (9, -4) is the answer

6 0
3 years ago
Statistics average (mean)
Nesterboy [21]

Answer:

1)C 2)B 3)B 4) D 5) B 6) A 7)B 8)C 9)A 10)B

I hope this help

7 0
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