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IceJOKER [234]
3 years ago
13

You and your friends get to go to an amusement park. You have $75 for the day. The entrance fee is $49.95 and lunch is $11. You

want to be able to join your friends and play in the arcade. Each game is $1.75.
a. Write an inequality to express the number of games you can play.
b. How many games can you play? Graph the solution interval on a number line on a sheet of paper. Describe how your graph looks.
c. After you have played in the arcade, have you spent all your money? If not, how much is left over? Explain your answer.
d. If you want to play 2 more games to beat your record, how much less will your lunch need to cost?
Mathematics
1 answer:
solong [7]3 years ago
6 0

Join QuestionCove for this, we have plenty of helpers willing to help!!

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Find the distance between a point (– 2, 3 – 4) and its image on the plane x+y+z=3 measured parallel to a line
Ber [7]

Answer:

The distance is:  

\displaystyle\frac{3\sqrt{142}}{10}

Step-by-step explanation:

We re-write the equation of the line in the format:

\displaystyle\frac{x+2}{3}=\frac{y+\frac{3}{2}}{2}=\frac{z+\frac{4}{3}}{\frac{5}{3}}

Notice we divided the fraction of y by 2/2, and the fraction of z by 3/3.

In that equation, the director vector of the line is built with the denominators of the equation of the line, thus:

\displaystyle\vec{v}=\left< 3, 2, \frac{5}{3}\right>

Then the parametric equations of the line along that vector and passing through the point (-2, 3, -4) are:

x=-2+3t\\y=3+2t\\\displaystyle z=-4+\frac{5}{3}t

We plug them into the equation of the plane to get the intersection of that line and the plane, since that intersection is the image on the plane of the point (-2, 3, -4)  parallel to the given line:

\displaystyle x+y+z=3\to -2+3t+3+2t-4+\frac{5}{3}t=3

Then we solve that equation for t, to get:

\displaystyle \frac{20}{3}t-3=3\to t=\frac{9}{10}

Then plugging that value of t into the parametric equations of the line we get the coordinates of the intersection:

\displaystyle x=-2+3\left(\frac{9}{10}\right)=\frac{7}{10}\\\displaystyle y=3+2\left(\frac{9}{10}\right)=\frac{24}{5} \\\displaystyle z=-4+\frac{5}{3}\left(\frac{9}{10}\right)=-\frac{5}{2}

Then to find the distance we just use the distance formula:

\displaystyle d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}

So we get:

\displaystyle d=\sqrt{\left(-2-\frac{7}{10}\right)^2+\left(3-\frac{24}{5}\right)^2+\left(-4 +\frac{5}{2}\right)^2}=\frac{3\sqrt{142}}{10}

3 0
3 years ago
2+2x8= ? To the 10th power
ch4aika [34]

Answer:

2+2×8=18

Step-by-step explanation:

2+2×8

2+16

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4 0
3 years ago
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tankabanditka [31]

Answer:

d=8$

Step-by-step explanation:

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Find all positive integer values of c that make x^2+6x+c factorable
densk [106]
It's factorable when c  ∈ {5,8,9}
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Can someone help me with this. Will Mark brainliest.
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pt B: (-1, -8)

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