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Reil [10]
3 years ago
8

A shelf holds 3 novels, 2 biographies, and 1 history book. Two students in turn choose a book at random. What is the probability

that the students choose both biographies?
Mathematics
2 answers:
Annette [7]3 years ago
4 0
2:6 since there are 6 books and 2 of them are biographies
Katarina [22]3 years ago
3 0
I think its 2/4 which is 1/2 

i learned it 
hope this helps
plz give brainlest 
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For every gallon of water in a swimming pool, you’ Instructed to add four grams of chlorine. How many grams of chlorine would yo
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Answer:

52

Step-by-step explanation:

Multiply grams per gallon times gallons to get grams.

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3 years ago
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Hector and Evelyn are solving the following problem. Find x,y, and z in this 45-45-90 triangle.
Murljashka [212]

Answer: A. They are both incorrect

Step-by-step explanation:

x=3√2

y=6

z=3√2

-----------------------

45-45-90=1:1:√2

------------------------

solve for x

x is the side accordingly to 90 in the smaller triangle, so it should be the [45] side times √2

3×√2=3√2

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solve for y

y is the side accordingly to 90, so it should be the [45] side times √2

3√2×√2=6

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solve for z

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z=x

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8 0
3 years ago
This figure represents a step in a compass-and-straightedge construction. Identify the construction.
Goshia [24]
A congruent line segmeny
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What is the greatest common factor of the polynomial's terms?
Alinara [238K]

Step-by-step explanation:

Write the prime factorization of each term:

9r⁵s = 3² × r⁵ × s

6r⁴s² = 2 × 3 × r⁴ × s²

12r²s = 2² × 3 × r² × s

The greatest common factor will have all the common factors raised to their lowest exponent.

So all three terms have 3, r, and s as factors.  The lowest exponent of 3 is 1.  The lowest exponent of r is 2.  The lowest exponent of s is 1.

GCF = 3 × r² × s

GCF = 3r²s

Factor out the GCF:

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3r²s (3r³ + 2r²s − 4)

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3 years ago
Is the statement “The absolute value of a number is always greater than its opposite” true?
german

Answer:

No; the absolute value of a negative number is equal to its opposite

Step-by-step explanation:

6 0
3 years ago
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