Determine which of the following ordered pairs, 
, 
, 
, 
, or 
is a solution to the system of equations below.![]()
align="middle" src="https://sciemce.com/media/4/ppg__examview__ch1__00001_res__mc001-6.jpg" border="0">
A. 
B. 
C. 
D. 
E. 
Answer: D
Mathematics
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Solve the problem.Suppose that 
= 2. Find 
and 
.
A. 2; -2 B. 2; 2 C. 0; 2 D. 0; -2
Mathematics
Estimate the value as a whole number or as a mixed numeral where the fractional part is 
.
+ 
+ 
A. 3
B. 2
C. 2
D. 3
Mathematics
Solve the problem.The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a screen 5 ft from a light is 3 
find the intensity on a screen 15 ft from the light.
A. 1 
foot-candles
B. 
foot-candle
C. 2 foot-candles
D. 
foot-candle
Mathematics
Solve the equation.log (5x) = log 4 + log (x + 1)
A. 
B. {- 4}
C. {4}
D. 
Mathematics