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krek1111 [17]
3 years ago
7

Which linear function has a y-intercept at –3? On a coordinate plane, a line goes through points (negative 1.5, 0) and (0, 3). O

n a coordinate plane, a line goes through points (0, negative 1) and (2, 0). On a coordinate plane, a line goes through points (negative 2.5, 0) and (negative 2, negative 2). On a coordinate plane, a line goes through points (negative 3, 0) and (0, negative 3).
Mathematics
2 answers:
n200080 [17]3 years ago
8 0

Answer:is d

Step-by-step explanation:

I just did the test

Nikitich [7]3 years ago
4 0

Answer:

(-3,0) and (0,-3)

Step-by-step explanation:

When you are looking for an intercept one of the coordinates is going to be 0.

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mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

3+90\cdot t -16\cdot t^{2} = 84

16\cdot t^{2}-90\cdot t +81 = 0 (1)

By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0
3 years ago
Can someone help me with my homework please
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Now you can see its pretty simple, its 128 but the way i got it is first you double 8 which makes 16 right then double 16 and you can see you got 32 then double 32 which makes 64 so next what you have to do is double 64 Obiously so you just double those numbers to get 128....Get it?
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Step-by-step explanation:

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