Answer: 40 questions I think
Step-by-step explanation:
Answer:
37.7
Step-by-step explanation:
n - 0.47n = 20
0.53n = 20
n = 37.7
Answer:
C.
Step-by-step explanation:
Science questions are T/F. That's .5 or 
chance to get it right.
7 questions. Each with a .
That's 
= 
= .0078 = .008 rounded
English questions are multiple choice. 4 choices. That's .25 or 
3 questions. Each
That's 
= 
= .0156 = .016 rounded
1) Expression 1: 16x^3 y
2) Expression 2: 24 xy^5
Procedure:
1) find the greatest common factor of the coefficients, 16 and 24:
16 = 2^4
24 = (2^3)*3
=> greatest common factor = 2^3 = 8
2) find the greatest common factor of x^3 y and xy^5
That is the common letters each raised to the lowest power:
=> xy
3) Then, the result is 8xy
Let D be dogs and C be cats
<em>dogs, d, is initially five less than twice the number of cats, c</em>
D + 5 = 2C
<em>If she decides to add three more of each, the ratio of cats to dogs will be</em>
D + 8 = 2C + 3
<em>Could Bea's Pet Shop initially have 15 cats and 20 dogs?</em>
Simply plug in the numbers
20 + 5 = 2(15)
This is clearly not true: 25 does not equal 30
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