<span>If 10% of x is 20,
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</span><span>then x = 200.</span><span>what is 23% of x?
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23% = (23/100)*200 = 46</span>
Equation 1) 4x + 2y = 8
Equation 2) 16x - y = 14
Multiply all of equation 2 by 2.
2) 2(16x - y = 14)
2) 32x - 2y = 28
1) 4x + 2y = 8
Add equations together.
36x = 36
Divide both sides by 36.
x = 1
Plug in 1 for x in the first equation.
4x + 2y = 8
4(1) + 2y = 8
4 + 2y = 8
Subtract 4 from both sides.
2y = 8 - 4
2y = 4
Divide both sides by 2.
y = 4/2
y = 2
So, x = 1, y = 2
~Hope I helped!~
Mean is equal to sum/ number of values
27+3+2+25+5=62
62/5=12.4
Final answer: D, 12.4 years
Answer:
the number of cookies ordered
Step-by-step explanation:
When an equation is written in the form ...
(left variable) = (some expression involving one or more right variables)
we usually describe the "left variable" as the "dependent variable" and the "one or more right variables" as the "independent variable(s)".
Here, the equation is given as ...
C = 3s + 30
__
This tells you C is the dependent variable, and s is the independent variable. The description also says "C is the number of cookies." Since you know that the dependent variable is the number of cookies, you can answer the question ...
the dependent quantity is the number of cookies ordered. (matches the first choice)
1/4 saved, 3/4
1/3 of the rest (4/4-1/4=3/4, 3/4=rest)
1/3 of 3/4=3/12=1/4
saved=1/4
spent on t-shirt=1/4
CD=?
1/4+1/4+?=4/4
2/4+?=4/4
minus 2/4
?=2/4
?=1/2
spent 1/2 on CDs
