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Readme [11.4K]
3 years ago
11

Your apartment is at (0, 0) on a coordinate plane. You want to go to Chicken Shack (CS) and get some tasty chicken tenders, with

buffalo sauce, curly fries, ranch and a Diet Pepsi. Chicken Shack's (CS) location is at (3, 4) . After Chicken Shack (CS ), you go to Baskin Robbins (BR) with your two co-workers at the location (- 4, 4) . What is the total distance you traveled?
Mathematics
1 answer:
Ainat [17]3 years ago
4 0

Answer:

The answer is below

Step-by-step explanation:

The distance between two points on a coordinate plane is given by:

Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Given the location of the apartment (AP) is at A(0,0), the Chicken Shack's (CS) location is at C(3, 4) and Baskin Robbins (BR) is at the location B(- 4, 4). Hence the following distance are:

|AB|=\sqrt{(-4-0)^2+(4-0)^2} =4\sqrt{2}\ units\\\\|AC|=\sqrt{(3-0)^2+(4-0)^2}=5\ units  \\\\|BC|=\sqrt{(3-(-4))^2+(4-4)^2}=7\ units

Hence the total distance travelled = distance between the apartment and chicken shack +distance between apartment and Baskin Robbins + distance between Baskin Robbins and chicken shack

total distance travelled = AB + BC + AC = 4√2 + 7 + 5

total distance travelled = 17.66 units

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A person is standing close to the edge on a 56 foot building and throws the ball vertically upward. The quadratic function h(t)=
Romashka [77]

Answer:

Part 1)

225 feet.

Part 2)

7 seconds.

Step-by-step explanation:

The height h(t) of the ball above the ground after <em>t</em> seconds is modeled by the function:

h(t)=-16t^2+104t+56

Part 1)

We want to determine the maximum height of the ball.

Notice that the function is a quadratic with a negative leading coefficient, so its maximum will be at its vertex point.

The vertex of a parabola is given by:

\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)

In this case, <em>a</em> = -16, <em>b</em> = 104, and <em>c</em> = 56.

Find the <em>x-</em> (or rather <em>t-</em>)<em> </em>coordinate of the vertex. So:

\displaystyle t=-\frac{(104)}{2(-16)}=\frac{104}{32}=\frac{13}{4}=3.25\text{ seconds}

In other words, the ball reaches its maximum height after 3.25 seconds.

To find the maximum height, substitute this value back into the function. Hence:

\displaystyle h(3.25)=-16(3.25)^2+104(3.25)+56=225\text{ feet}

The maximum height of the ball is 225 feet in the air.

Part 2)

We want to find the amount of time it took for the ball to hit the ground.

When the ball hit the ground, its height above the ground is zero. Therefore, we can set h(t) to 0 and solve for <em>t: </em>

0=-16t^2+104t+56

We can simplify a bit. Divide both sides by -8:

0=2t^2-13t-7

We can factor. Find two numbers that multiply to 2(-7) = -14 and add to -13.

-14 and 1 works! Therefore, split the second term into -14 and 1:

\displaystyle 0=2t^2-14t+t-7

Factor out a 2<em>t</em> from the first two terms and group the last two terms:

0=2t(t-7)+(t-7)

Factor by grouping:

0=(2t+1)(t-7)

Zero Product Property:

2t+1=0\text{ or } t-7=0

Solve for each case:

\displaystyle t=-0.5\text{ or } t=7

Since time cannot be negative, we can ignore the first case.

Therefore, it takes seven seconds for the ball to hit the ground.

6 0
3 years ago
(02.05 LC)
NemiM [27]

Answer: 1 over 2

Step-by-step explanation: if you take the coordinates of the pre-image, letter A. which is (2,6) and the coordinates of the transformed image A’ which is (1,3) and only use the first number of the coordinates. You would put the number of of the pre-image as the denominator and the number of the transformed image as the numerator. And It would become 1/2.

4 0
3 years ago
Read 2 more answers
Can someone help me with these 2?
pochemuha

Answer:

so this one could be a little tricky to understand over the computer.Im going to try my best though.

Step-by-step explanation:

Its hard to explain how i got the answer.

im not going to try and do it.

7-5

8-2.5

really hope this helps. :)

7 0
4 years ago
How to tell if a table is a exponential decay function an exponential growth function or neither
aliya0001 [1]

Answer:

Exponential function: a*b^x

if B is less than 1, it is a decay function

if B is more than 1, then it is a growth function  

if B is 0, then the function neither decreases nor increases

Example 1: 100*0.14^x

The y-intercept is decreasing by 86%

Example 2: 3000*1.14^x

The y-intercept is increasing by 14%

Example 3: 400*0

The y-intercept is neither decreasing nor increasing

Going back to the function, <u>a</u> is the y-intercept, and <u>b</u> is the rate

<u>I hope this will help you, I just started to learn about exponential functions..</u>

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2 years ago
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