3 years ago

Help I don’t understand this

Mathematics

2 answers:

RUDIKE [14]3 years ago

7 0

Px+76=Qx+76

Px = Qx

P = Q

so A and C is the answer

TEA [102]3 years ago

3 0

The answer is A.

Explanation: It’s asking which of those will make the equations the exact same.

When asked for infinitely many solutions, it’s asking for which one is the same line.

If they’re the same line, they are on top of each other and therefore always touching.

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Someone answer these

aksik [14]

Answer:

1. 8.5 x 10^8

2. 93/10000 - 4 x 10^12

3. 9.95 x 10^12

Step-by-step explanation:

3 0

3 years ago

Find the solutions of the quadratic equation -9c² +2 +3 = 0.

Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here, a = -9, b = 2 and c =3

Put the values,

$c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69$