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Olenka [21]
3 years ago
9

The we are readers book club allows members to buy book for $8.75 per book.The print is dead book club cost $20 to join and allo

ws members to buy books for $6.25 per book.
What does each variable represent?

Write system of equation for above sitiuation.


How many book purchases give the two book clubs the same cost? What is the equal cost??
Mathematics
1 answer:
Likurg_2 [28]3 years ago
7 0
$8.75x = $6.25x + $20

$8.75x -$6.25x = $20

$2.50x = $20

So when x = 8, $8.75 x 8 books= $70 and $6.25 x 8 books = $50 + $20 club fee = $70

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A geometric figure enclosed by a circle is called an inscribed figure.
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To estimate the height of a mountain, two students find the angle of elevation from a point (at ground level) b = 800 meters fro
Nady [450]

Answer: The height of the mountain is 1,331.4 meters (approximately)

Step-by-step explanation: From the information given, the students were standing at point b which is 800 meters from the base of the mountain and the angle of elevation from that point is 59°. Assuming that the ground is level, we can derive a right angled triangle from this set of details and hence we have triangle ABC, where angle β is the reference angle, (59 degrees), BC is the distance from the students to the base of the mountain (800 meters) and the line AC is the height of the mountain.

The line AC is the opposite, since angle B is the reference angle, therefore we shall use the trigonometric ratio as follows;

Tan β = opposite/adjacent

Tan 59 = AC/800

Tan 59 x 800 = AC

1.6643 x 800 = AC

1331.44 = AC

AC ≈ 1331.4

Therefore the height of the mountain is approximately 1,331.4 meters

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3 years ago
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Given: m =-2/3
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The correct answer is (( D )) .

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6 0
3 years ago
Which system of linear inequalities is represented by the graph?  ax – 3y > 6 and y > 2x + 4 bx + 3y > 6 and y > 2x 
igor_vitrenko [27]

The <em><u>correct answer</u></em> is:

bx + 3y > 6 and y > 2x + 4

Explanation:

Looking at the second inequality, the y-intercept is 4 and the slope is 2.  This means the graph of the line crosses the y-axis at (0, 4) and the line goes up 2 and over 1.  Since it is greater than, this means the graph is shaded above it.  Comparing this to the graph, the line for the blue part crosses the y-axis at (0, 4) and goes up 2 and over 1.  The graph is also shaded above the line.

For the first inequality, bx+3y > 6, we want to isolate y.  To do this, we subtract bx from each side:

bx+3y-bx > 6-bx

3y > 6-bx

Divide both sides by 3:

3y/3 > 6/3 - bx/3

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This means the line for this will have a y-intercept of 2 and decrease 1 while going over 3.  The orange section does this.  Additionally, since it is greater than, the graph should be shaded above the line.  This one is, so this is the correct answer.

3 0
3 years ago
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algol13

Answer:

100

Step-by-step explanation:

i dont know but the website i was on said 100

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3 years ago
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