18km
13.4km
13km
10.4km
Correct answer is B
ZY\(^2\) = 12\(^2\) + 6\(^2\)
ZY\(^2\) = 144 + 36 = 180
ZY = \(\sqrt{180}\)
= \(13.416\)
= 13.4 km
6
5
4
-5
Correct answer is A
\(log2 = 0.3010\hspace{1mm}given\\
log2^y = 1.8062\\
∴ ylog2 = 1.8062\\
y=\frac{1.8062}{logy}=\frac{1.8062}{0.3010}=6\)
4
5
13
17
Correct answer is B
\((x + 2)^{2} = x^{2} + (x + 1)^{2}\)
\(x^2 + 4x + 4 = x^2 + x^2 + 2x + 1\)
\(2x^{2} - x^{2} + 2x - 4x + 1 - 4 = 0\)
\(x^{2} - 2x - 3 = 0\)
\(x^{2} - 3x + x - 3 = 0 \implies x(x - 3) + 1(x - 3) = 0\)
\((x - 3)(x + 1) = 0 \implies \text{x = 3 or -1}\)
\(x > 0 \implies x = 3\)
The longest side = 3 + 2 = 5.
\( 2\frac{1}{2}\)
\( 2\frac{1}{5}\)
\( 1\frac{1}{5}\)
0
Correct answer is B
No explanation has been provided for this answer.
What is the length of \(\bar{RP}\)?
6
5
3
2
Correct answer is B
\(\bar{RP} = 3 - (-2)\)
= 5
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