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2 years ago

Of 60 books on a bookself, 24 are nonfiction what percent of the books are not nonfiction?

1 answer:

3 0

Of 60 books on a bookshelf, 24 are nonfiction what percent of the books are not nonfiction?
40% of the books are nonfiction which means 60% of the books on the bookshelf are not nonfiction.

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What coordinate changes when reflected over the y-axis?

Alexeev081 [22]

Answer:

When a point is reflected across the y-axis, the y-coordinate(s) remain the same. But the x-coordinate(s) is transformed into opposite signs.

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2 years ago

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Perpendicular lines do not intersect. True or false?

saul85 [17]

Answer:

Perpendicular lines are lines that intersect at a right (90 degrees) angle

Step-by-step explanation:

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2 years ago

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Solve the math problem No spamming

valkas [14]

Answer:

1. slope for pq is 150 / 3 but simplified is 50/1

2. 200

3. 4

Step-by-step explanation:

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1 year ago

Find the sum of the first 8 terms of the sequence. Show all work for full credit.

aliina [53]

$1, -3, -7, -11, ...\ \ \ \ \rightarrow\ \ \ the\ arithmetic\ sequence\\\\the\ difference\ of\ the\ sequence\ is\ \ \ \ d=-3-1=-4\\\\the\ sum:\ \ \ \ S_n= \frac{\big{2\cdot a_1+(n-1)\cdot d}}{\big{2}} \cdot n\\\\\\S_8= \frac{\big{2\cdot1+(8-1)\cdot(-4)}}{\big{2}} \cdot8=(2-28)\cdot4=-26\cdot4=-104\\\\Ans.\ The\ sum\ is\ -104.$

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2 years ago

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Calculer x si (x+1/2)^2= 4/9

-Dominant- [34]

Answer:

$x=-\frac{7}{6}\\x=\frac{1}{6}$

Step-by-step explanation:

The equation to solve is:

$(x+\frac{1}{2})^2=\frac{4}{9}$

To get rid of the "square", we need to take square root of both sides:

$\sqrt{(x+\frac{1}{2})^2}=\sqrt{\frac{4}{9}}\\x+\frac{1}{2}=\frac{\sqrt{4}}{\sqrt{9}}$

Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:

$x+\frac{1}{2}=+-\frac{\sqrt{4}}{\sqrt{9}}\\x+\frac{1}{2}=+-\frac{2}{3}\\x=\frac{2}{3}-\frac{1}{2}=\frac{1}{6}\\x=-\frac{2}{3}-\frac{1}{2}=-\frac{7}{6}$

So these are 2 answers for x.

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2 years ago