Correct Answer: A. tends to preserve the multi-party system

Correct Answer: (C) speedily to Enugu at 6:00am

Correct Answer: B. Alternative evaluation

Correct Answer: d) Pressure

Explanation

(a)(i) and (iii)Scale: On each axis, 2 cm represents 10 marks.

(ii) \(\bar{x} = \frac{43 + 46 + 48 + 39 + 30 + 60 + 8 + 45 + 40}{9} = \frac{359}{9} = 39.89 \approxeq 39.9\)

\(\bar{y} = \frac{54 + 53 + 63 + 30 + 44 + 75 + 20 + 33 + 48}{9} = \frac{421}{9} = 46.78 \approxeq 46.8\)

\((\bar{x}, \bar{y}) = (39.9, 46.8)\)

(b)

The equation of the line :

\(y - \bar{y} = m(x - \bar{x})\)

\(m = \frac{\sum {xy} - N(\bar{x})(\bar{y})}{\sum {x^{2}} - N(\bar{x})^{2}}\)

= \(\frac{18379 - 9 \times 39.9 \times 46.8}{15979 - (39.9)^{2}} = \frac{18379 - 16805.88}{15979 - 9 \times (39.9)^{2}}\)

= \(\frac{1573.12}{1650.91} \approxeq 0.95\)

Substituting in the equation, \(y - \bar{y} = m(x - \bar{x})\)

\(y - 46.8 = 0.95(x - 39.9)\)

= \(y = 0.95x + 8.895\)

(c) y = 0.95x + 8.895

when x = 28,

\(y = (0.95 \times 28) + 8.895\)

= \(26.6 + 8.895 \approxeq 35.5 marks\).

For a student who scored 28 in Mathematics, his mark in Physics is 35.5.

Correct Answer: C. Hausa Fulani

Correct Answer: B) income that could be spent when tax has been removed

Explanation

The question is asking about the meaning of disposable income. Disposable income is the amount of money that is available to be spent or saved after taxes have been deducted from a person's income. This means that disposable income is the income that could be spent when tax has been removed. It is the money that a person has left over after paying taxes, bills, and other necessary expenses.

It is important to note that disposable income is not the same as gross income, which is the total amount of money a person earns before taxes and other deductions are taken out. Disposable income can be used to buy goods and services, invest, or save for the future.

In some cases, disposable income can be affected by other factors such as inflation, interest rates, and government policies. For example, if inflation is high, the cost of goods and services will increase, which means that the value of disposable income will decrease.

It is important for individuals to manage their disposable income wisely and make informed decisions about how to allocate their resources. This can involve setting financial goals, creating a budget, and making smart spending choices.

In summary, disposable income is the amount of money that is available to be spent or saved after taxes have been deducted from a person's income. It is an important concept in personal finance and can be affected by various factors.

Correct Answer: A. Activation energy

Correct Answer: D. he was too young and inexperienced

Explanation

(a)(i) Stress is force per unit cross sectional area, while strain is extension over original length

(ii) Stress has unit of Nm\(^{-2}\) while strain has no unit.

(b) Work done on the cord = \(\frac{1}{2}\) Fe

= \(\frac{1}{2}\) x 40 x 0.05 = 1.0J