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Ad libitum [116K]
3 years ago
9

Question 4

Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Answer:

No real roots

Step-by-step explanation:

The given equations are:

3x-1+2y=0

3x^2-y^2+4=0

We make y the subject in the first equation to get

y=\frac{1-3x}{2}

We substitute into the second expression to get:

3x^2-(\frac{1-3x}{2})^2+4=0

We expand to get:

3x^2-\frac{(1-6x+9x^2)}{4}+4=0

Multiply through by 4 to get:

12x^2-1+6x-9x^2+16=0

3x^2+6x+15=0

The discriminant is given by D=b^2-4ac

D=3^2-4*12*15

D=-711

Since the discriminant is less than zero, the two curves never intersects.

Therefore the system has no real roots

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sweet-ann [11.9K]
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4 0
2 years ago
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Likurg_2 [28]
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6 0
3 years ago
Bonnie is four years older than Clyde.
Doss [256]

Answer:

Bonnie's age is 18

Step-by-step explanation:

Let

x ----> Bonnie's age

y ---> Clyde's age

we know that

x=y+4 ----> equation A

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substitute equation A in equation B

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Solve for y

2y-y=4+10

y=14

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x=14+4=18

therefore

Bonnie's age is 18

Clyde's age is 14

7 0
3 years ago
45) lí the midpoint of AB is (4,3) and point A has coordinates (-2,6),
sweet [91]
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And vice versa for the y coordinate you solve the filled in equation to get 0
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3 0
3 years ago
0.38x &lt; 25 -10.81 - 10
marusya05 [52]

Answer:

Inequality Form :

x < 11.02631578

Interval Notation :

( − ∞, 11.02631578)

4 0
3 years ago
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