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allsm [11]
3 years ago
9

On a book shelf you choose the 11th book from the left and the 10th book from the right.  How many books are on the shelf?

Mathematics
1 answer:
natita [175]3 years ago
6 0
If you're talking about the books in between, it will/be 20 books
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sesenic [268]

Answer:

Step-by-step explanation:

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aleksandr82 [10.1K]

Answer:

Point of intersections are (0, -7) and (5, -2).

Step-by-step explanation:

From the graph attached,

A straight line is intersecting the circle at the two points (0, 7) and (5, -2).

Now solve algebraically,

Equation of the line → y = x - 7 -------(1)

Equation of the circle → (x - 5)² + (y + 7)² = 25 -------(2)

By substituting the value of y from equation (1) to equation (2)

(x - 5)² + (x - 7 + 7)² = 25

(x - 5)² + x² = 25

x² - 10x + 25 + x² = 25

2x² - 10x = 0

x² - 5x = 0

x(x - 5) = 0

x = 0, 5

From equation (1),

y = 0 - 7 = -7

y = 5 - 7 = -2

Therefore, point of intersections are (0, -7) and (5, -2).

6 0
3 years ago
How many solutions does this linear system have?
Talja [164]
The answer would be A: -2.5, 0
4 0
3 years ago
In triangle XYZ, m∠Z &gt; m∠X + m∠Y. Which must be true about △XYZ?
Solnce55 [7]
Since z is GREATER THAN two angles in the triangle it must be obtuse..
meaning it is GREATER THAN 90 degrees this means that the other two angles cannot equal 90 degrees they have to be less

m∠X + m∠Y < 90°
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3 years ago
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A is the correct answer I hope that helps :)
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