All categories

3 years ago

Why do you need to change the signs in -x^2+6x+m=0 ?

Mathematics

1 answer:

Goshia [24]3 years ago

3 0

Answer:

It isn't necessary but having a positive coefficient for $x^2$ makes things like completing the square and factoring easier.

You might be interested in

A bag contains 3 yellow, 1 red, and 2 green beads. Charlene draws a bead, keeps it out, then draws another bead. What’s the prob

Archy [21]

The probability would be 1/15.

3 0

3 years ago

If the area of the rectangle is twenty-four-and-thirty-two-hundredths square inches, what’s the measurement of the width?

GuDViN [60]

Answer:

Can't answer this without knowing the height of the rectangle ...

Step-by-step explanation:

6 0

2 years ago

If cosθ=2/3 find cscθ using identities. This is in quad. 1.

laiz [17]

Step-by-step explanation:

cos θ = 2/3

$\quad \twoheadrightarrow\sf {cos \; \theta = \dfrac{Base}{Hypotenuse} } \\$

Hence, base = 2 units and hypotenuse = 3 units.

$\quad \twoheadrightarrow\sf { H^2 = B^2 + P^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = H^2 - B^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = (3)^2 - (2)^2} \\$

$\quad \twoheadrightarrow\sf { P^2 = 9- 4} \\$

$\quad \twoheadrightarrow\bf { P = \sqrt{5}} \\$

Now, we know that :

$\quad \twoheadrightarrow\sf {cosec \; \theta = \dfrac{Hypotenuse}{Perpendicular} } \\$

$\quad \twoheadrightarrow\bf{cosec \; \theta = \dfrac{3}{\sqrt{5}} } \\$

Therefore, the required answer is 3/√5.

4 0

2 years ago

I need help. This isn’t school related but it’s for my early college essay. The topic is why is early college a good fit for me?

Diano4ka-milaya [45]

Answer:

Early college provides high school students the ability to get a sneak-peak into what college is like as a whole. Credits, professors, homework, campus and friends don't need to be intimidating topics anymore.

Step-by-step explanation:

I Hope This Helps! Good Luck!

7 0

3 years ago

Read 2 more answers

PLEASE HELP! Brainlest!!! Just fill in the chart

Cloud [144]

Answer:

Softball : Speed: 29.68 m/s --- Kinetic Energy: 82.36 Joules

Horse: Speed: 13.33 m/s --- Kinetic Energy: 48,331.40 Joules

Satellite: Speed: 3067.13 m/s --- Kinetic Energy: 3,762,910,000 Joules

I hope this helps! Please give me Brainliest. Sorry for the late response, my power went out.

4 0

3 years ago

Read 2 more answers