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3 years ago

Find the discriminant of 3x^2-10x=-2

Mathematics

1 answer:

Oksanka [162]3 years ago

7 0

Answer:

Step-by-step explanation:

given a quadratic equation in standard form : ax² + bx + c = 0 : a ≠ 0

then the discriminant is Δ = b² - 4ac

given 3x² - 10x = - 2 ( add 2 to both sides )

3x² - 10x + 2 = 0 ← in standard form

with a = 3, b = - 10 and c = 2

b² - 4ac = (- 10)² - (4 × 3 × 2) = 100 - 24 = 76

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pickupchik [31]

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Step-by-step explanation:

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3 years ago

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Write the equation of a line parallel to y=3x-8 that goes through the point (-4,7). Write the final answer in slope intercept fo

AleksandrR [38]

Answer:

y = 3x + 19

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x - 8 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes , thus

y = 3x + c ← is the partial equation

To find c substitute (- 4, 7) into the partial equation

7 = - 12 + c ⇒ c = 7 + 12 = 19

y = 3x + 19 ← equation of parallel line

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3 years ago

Am I correct? Please correct me if I am incorrect, thank you

velikii [3]

No, I don't think so

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3 years ago

I is more than the product of 7 and s

Marysya12 [62]

Answer:

i is an imaginary number

3 0

3 years ago

1 1/2= v + 3/4 (that's 1 and a half, not 11 over 2)<br> what is v?

Irina-Kira [14]

Answer:

The value of v is 3/4.

Step-by-step explanation:

First, you have to convert mixed number into improper fraction :

$1 \frac{1}{2} \\ = \frac{2 \times 1 + 1}{2} \\ = \frac{3}{2}$

In order to find the value of v, you have to substract 3/4 to both sides :

$\frac{3}{2} = v + \frac{3}{4}$

$\frac{3}{2} - \frac{3}{4} = v + \frac{3}{4} - \frac{3}{4}$

$v = \frac{3 \times 2}{2 \times 2} - \frac{3}{4}$

$v = \frac{6}{4} - \frac{3}{4}$

$v = \frac{3}{4}$

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3 years ago

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