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3 years ago

What is the slope and y-intercept of the graph? (2.1) (-1.4)

2 answers:

5 0

-1 and the y-intercept is 6 I think, I used another app called math w.a.y (remove the periods I can’t put the actual app name)

Serggg [28]3 years ago

4 0

Answer:

The slope is -1

Step-by-step explanation:

Use the formula m=y2-y1/x2-x1

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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

iris [78.8K]

Answer:

t = 15.42 s

Step-by-step explanation:

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation.

$y=-16x^2+242x+73$

We ned to find the time when the rocket will the ground. For this, y = 0

$-16x^2+242x+73=0$

It is a quadratic equation whose solution is given by :

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

Here, a = -16, b = 242 and c = 73

$x=\dfrac{-b+ \sqrt{b^2-4ac} }{2a}, x=\dfrac{-b-\sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-242+ \sqrt{(242)^2-4(-16)(73)} }{2(-16)}, x=\dfrac{-242- \sqrt{(242)^2-4(-16)(73)} }{2(-16)}\\\\=-0.295\ s, 15.42\ s$

Neglecting negative value.

So, it will hit the ground in 15.42 s.

5 0

3 years ago

This is for algebra 2 and I got stuck on this anyone know this?

AnnZ [28]

You just simplify the fraction (so, 8/6 which is 4/3)

So your comes 4(square root of 35)/ 3 (square root of 15)

5 0

3 years ago

-2 (x- 1) <24

Fantom [35]

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4 0

3 years ago

Simplify. Write your answer in standard form.<br><br><br>(4x^3+6x−7)+(3x^3−5x^2−5x+9)

UkoKoshka [18]

answer: 7x^ - 5x^2 + x + 2

step-by-step explanation: i think thats it

3 0

2 years ago

Louise is creating a 1-foot long comic strip. If she has marked .5 ft on her paper, what should she do to find 1ft?

pav-90 [236]

What she should do:
1ft = 12 in.
12 in - .5 = 11.5 in.

How much more she needs to mark:
11.5 inches

5 0

3 years ago