Find the values of y which satisfy the simultaneous equations x + y = 5, x2 - 2y2 = 1
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1987
Factorize 62x + 1 + 7(6x) - 5
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1987
Find the values of m which make the following quadratic function a perfect square. x2 + 2(m + 1)x + m + 3
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1987
Make y the subject of the formula Z = x2 + \(\frac{1}{y^3}\)
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1987
If P varies inversely as V and V varies directly as R2, find the relationship between P and R given that R = 7 when P = 2.
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1987
The formula Q = 1.5 + 0.5n gives the cost Q(in Naira)of feeding n people one additional person
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1987
If a u2 - 3v2 and b = 2uv + v2 evaluate (2a - b)(a - b2), when u = 1 and v = -1
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1987
If P = \(\frac{2}{3}\) (\(\frac{1 - r^2}{n^2}\)), find n when r = \(\frac{1}{3}\) and p = 1
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1987
Simplify without using tables \(\frac{2\sqrt{14} \times 3\sqrt{21}}{7\sqrt{24} \times 2\sqrt{98}}\)
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1987
Simplify without using tables \(\frac{log_26}{log_28}\) - \(\frac{log_23}{log_2\frac{1}{2}}\)
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1987
Evaluate without using tables (0.008) -\(\frac{1}{3}\) x (0.16) - \(\frac{3}{2}\)
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1987
Four boys and ten girls can cut a field in 5 hours if the boys work at \(\frac{5}{4}\) the rate at which the girls work. How many boys will be needed to cut the field in 3 hours?
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1987
By selling 20 oranges for ₦1.35 a trader makes a profit of 8%. What is his percentage gain or loss if he sells the same 20 oranges for ₦1.10?
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1987
A man invests a sum of money at 4% per annum simple invest. After 3 years, the principal amounts to ₦7,000.00. Find the sum invested
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1987
Two brothers invested a total of ₦5,000.00 on a farm project, the farm yield was sold for ₦15,000.00 at the end of the season. If the profit was shared in the ratio 2 : 3, what is the difference in the amount to profit r…
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1987
If the length of a square is increased by 20% while while its width is decreased by 20% to form a rectangle, what is the ratio of the area of the rectangle to the area of the square?
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1987
A train moves from P to Q at an average speed of 90km/h and immediately returns from Q to P through the same route at an average speed of 45km/h. Find the average speed for the entire journey
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1987
Reduce each number to two significant figures and then evaluate \(\frac{0.021741 \times 1.2047}{0.023789}\)
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1987
A rectangular lawn has an area of 1815 square yards. if its length is 50 meters, find its width in meters given that 1 metre equals 1.1 yards