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nignag [31]
3 years ago
11

One of the following expressions is equivalent to 8x^2-10x+3. Which expression is it?

Mathematics
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

D)

Step-by-step explanation:

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Step-by-step explanation:

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X^2+y^2=169, 3x+2y=39 please answer using substitution and each step
Oksanka [162]

Answer:

x=13,y=0

Step-by-step explanation:

We are given a system of equations

{x}^{2}  +  {y}^{2}  = 169 -  - eqn \: 1 \\ 3x + 2y = 39 -  - eqn \: 2

For equation 1,square all terms to reduce it

√x²+√y²=169

x+y=13

Make x the subject as required by the question to use substitution method

x=13-y

Plug x=13-y into eqn 2

3(13-y)+2y=39

39-3y+2y=39

39-y=39

y=39-39=0

Plug y=0 into equation 1

x+0=13

x=0

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2 years ago
A parabola passes through the points (–5, –10) and (5, –10), and the vertex is located at (0, 0). Find the equation of the parab
vitfil [10]
The equation of the parabola is -0.4x^2
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20 POINTS IF CORRECT CAN SOMEONE HELP ME
Nataly [62]

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Answer:

24

Step-by-step explanation:

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