5y - 4x - 7z
3y + 2x + 3z
-5y + 4x + 7z
2x - 5y + 3z
Correct answer is A
(4y - x - 2z) - (-y + 3x + 5z)
= 4y + y - x - 3x - 2z - 5z
= 5y - 4x - 7z
In ∆PQR. ∠PQR is a right angle. |QR| = 2cm and ∠PRQ = 60o. Find |PR|...
No. of Days 1 2 3 4 5 6 No. of students 20 2x 60 40 x 50 The distribution above shows the n...
Evaluate ∫\(^2_1\) \(\frac{5}{x}\) dx...
Evaluate \(\int^{1}_{0}\)(3 - 2x)dx...
Find, correct to two decimal places, the mean of 9, 13, 16, 17, 19, 23, 24. ...
Using the venn diagram, find n(x \(\cap\) y1)...
Tade bought 200 mangoes at 4 for ₦2.50. 30 out of the mangoes got spoilt and the remaining we...
If 2\(^{x + y}\) = 16 and 4\(^{x - y} = \frac{1}{32}\), find the values of x and y...