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3 years ago

Help pleaseeeee and thanks

Mathematics

1 answer:

juin [17]3 years ago

5 0

Answer:

Step-by-step explanation:

$-2x^2-4x=6 \\\\\\-2x^2-4x-6=0\\\\\\2x^2+4x+6=0\\\\\\x=\dfrac{-4\pm\sqrt{16-48}}{4}= \\\\\\\dfrac{-4\pm4\sqrt{2}i}{4}=\\\\\\-1\pm \sqrt{2}i$

Therefore, the correct answer is choice B. Hope this helps!

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9x+63=100 please answer my question

valina [46]

Answer:

x=3

Step-by-step explanation:

9x+63=100

9x+0=27

9(3)=27

8 0

3 years ago

Suppose a football is kicked with an initial velocity of 82 ft/sec., at an angle of

satela [25.4K]

Answer:

The position P is:

$P = 87\^x + 75\^y$ ft Remember that the position is a vector. Observe the attached image

Step-by-step explanation:

The equation that describes the height as a function of time of an object that moves in a parabolic trajectory with an initial velocity $s_0$ is:

$y(t) = y_0 + s_0t -16t ^ 2$

Where $y_0$ is the initial height = 0 for this case

We know that the initial velocity is:

82 ft/sec at an angle of 58 ° with respect to the ground.

So:

$s_0 = 82sin(58\°)$ ft/sec

$s_0 = 69.54$ ft/sec

Thus

$y(t) = 69.54t -16t ^ 2$

The height after 2 sec is:

$y(2) = 69.54 (2) -16 (2) ^ 2$

$y(2) = 75\ ft$

Then the equation that describes the horizontal position of the ball is

$X(t) = X_0 + s_0t$

Where

$X_ 0 = 0$ for this case

$s_0 = 82cos(58\°)$ ft / sec

$s_0 = 43.45$ ft/sec

$X(t) = 43.45t$

After 2 seconds the horizontal distance reached by the ball is:

$X (2) = 43.45(2)\\\\X (2) = 87\ ft$

Finally the vector position P is:

$P = 87\^x + 75\^y$ ft

6 0

3 years ago

What is the domain of the function represented by this graph?

balandron [24]

Answer:

D. ALL REAL NUMBERS

Step-by-step explanation:

3 0

3 years ago

Convert into slope-intercept form: <img src="https://tex.z-dn.net/?f=y-1%3Dm%28x-3%29" id="TexFormula1" title="y-1=m(x-3)" alt="

aliina [53]

Answer:

y=2x-5

Step-by-step explanation:

First simplify: y-1=2x-6

y-1=2(x-3)

First simplify and distribute everything.

y-1=2x-6

So, x equals 2 because it got distributed into the numbers inside the parenthesis. Same with the 2 and -3. They multiplied to become -6.

Since it's y-1=2x-6, you can simplify it even more so the -1 goes to the other side and turns into positive 1.

y - 1 (+ 1) = 2x -6 (+ 1)

-1(+1)=0 which leaves just the variable y on the left side.

-6(+1)=-5 which leaves 2x-5 on the right side.

This results in y=2x-5. Hope this helped ;)

6 0

3 years ago

Read 2 more answers

Fantasy Lanes bowling alley charges each patron $3 to rent shoes plus $5 per hour for bowling. This relationship is represented

jeka57 [31]

It is a line
it represents te relationship between the cost and time bought

7 0

3 years ago