Help with solving simulatenous equations with 1 quadratic . question attached

Mathematics

2 answers:

yuradex [85]3 years ago

7 0

Answer:

x = 1/2, y = 17/2

x = -3, y = 12

Tems11 [23]3 years ago

4 0

Answer:

x= -3, y=12

x=1/2, y=8 1/2

Step-by-step explanation:

y = 9-x

y= 2x²+4x+6

9-x= 2x²+4x+6
2x²+5x-3=0

solving, we get

x= -3 and x= 1/2

then

for x= -3, y= 9+3= 12

for x=1/2, y= 9-1/2= 8 1/2

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Which number produces a rational number when added to 0.25

Tatiana [17]

0.65 is the correct one if not up there try 0.45 other possible one

Step-by-step explanation:

A rational number is defined as any number which can be expressed in fractional p/q of two integers, where 'p' is the numerator and 'q' is the denominator. 'q' can never be zero. A rational number can also be expressed as a terminating decimal. So, when 0.25 is added in 0.45 it becomes 0.65 which is rational.

8 0

3 years ago

What are the coordinates of the orthocenter of △JKL with vertices at J(−4, −1) , K(−4, 8) , and L(2, 8) ?

kompoz [17]

Answer:

K(-4,8) is the ortho center.

Step-by-step explanation:

In a right angled triangle, The vertex of the right angle is the ortho center.

Here we are given

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Using distance formula we get

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