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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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How to do Riemann's Hypothesis?

Rudik [331]

Answer: what is that

thanks ur awesome

Step-by-step explanation:

Unsolvable

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3 years ago

Katie completes 2/3 of her craft project in 3/4 of an hour at this rate what fraction of the craft project does Katie complete i

trasher [3.6K]

Answer:

2/3 in 3/4 of an hour. that would mean u an extra 1/4 of an hour would give Katie the time to finish up the project

Step-by-step explanation:

Katie, take no breaks when u can get this done in an hour. don't be lazy

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2 years ago

If you take 7 cards frim a deck of 52 cards, how many cards do you have?

notsponge [240]

You would subtract 52-7 and your answer would be 45

5 0

3 years ago

3. Bryce mows lawns to make some extra money. He charges $15 per lawn. Bryce will

anyanavicka [17]

The domain and range of a function is the set of input and output values, the function can take.

The domain is [0,6]
The range is [0,90]

From the question, we have:

$\mathbf{Rate = \$15}$

The domain

He cannot mow more than 6 yards a day.

This means that the domain is: 0 to 6

This is properly represented as: [0,6]

The range

When he mows 0 yards, his earnings is:

$\mathbf{Earnings = 0 \times \$15 = \$ 0}$

When he mows 6 yards, his earnings is:

$\mathbf{Earnings = 6 \times \$15 = \$ 90}$

This means that the range is: 0 to 90

This is properly represented as: [0,90]

Read more about domain and range at:

brainly.com/question/4767962

5 0

3 years ago

Circle towns limit form a perfectly circular shape that has a population of 20000 in the population density of 480 people per sq

Alex

Answer:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

Step-by-step explanation:

For this case we know the population size $P = 20000$ and we also know the population density $D = 480 \frac{people}{km^2}$

We can assume that the area is a circle. We also know that the formula for the population density is given by:

$D= \frac{P}{A}$

Where P represent the number of people and A the area. Since we are assuming a circle then the area is given by:

$A = \pi X^2$

With X the radius of the circle

And then the populationd density become:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

6 0

3 years ago