Correct Answer: A. seeking the favour of the gods

Correct Answer: D. SMTP

Correct Answer: B. 5.50

Explanation

Mean \(\bar{x}\) = \(\frac{3 + 7 + 6 + 2 + 8 + 5 + 9 + 1 + 4 + 10}{10} \)

= \(\frac{55}{10} = 5.50\)

Explanation

Line : \(2y = x + 3\)

\(\therefore y = \frac{1}{2} (x + 3)\)

\(x^{2} + y^{2} - 2x + 6y - 15 = 0\)

\(x^{2} + (\frac{1}{2} (x + 3))^{2} - 2x + 6(\frac{1}{2} (x + 3)) - 15 = 0\)

\(x^{2} + \frac{x^{2}}{4} + \frac{6x}{4} + \frac{9}{4} + 3x + 9 - 15 = 0\)

\(\frac{5x^{2}}{4} + \frac{10x}{4} - \frac{15}{4} = 0\)

\(\equiv 5x^{2} + 10x - 15 = 0\)

\(5x^{2} - 5x + 15x - 15 = 0 \implies 5x(x - 1) + 15(x - 1) = 0\)

\((5x + 15)(x - 1) = 0 \implies \text{x = -3 or 1}\)

When \(x = -3\), \(y = \frac{1}{2} (-3 + 3) = 0\)

When \(x = 1\), \(y = \frac{1}{2} (1 + 3) = 2\)

The coordinates are M(-3, 0) and N(1, 2).

Correct Answer: D. Mallam Salihu

Correct Answer: A. initializing and testing hardware components

Correct Answer: B) Exoskeleton

Explanation

The question is asking which type of skeleton is most appropriate for a cockroach. The options are hydrostatic skeleton, exoskeleton, endoskeleton, or cartilaginous skeleton. Insects, like the cockroach, have a hard outer covering called an exoskeleton. The exoskeleton is made up of a tough material called chitin, which protects the insect's body and provides attachment points for muscles. The exoskeleton is also useful for preventing water loss in terrestrial insects. A hydrostatic skeleton is a type of skeleton found in animals that have a soft body and no bones. It uses fluid to create a pressure system that can change the shape of the body. An example of an animal with a hydrostatic skeleton is a jellyfish. Endoskeletons are internal skeletons made of bone and cartilage. Vertebrates, such as humans, have endoskeletons. Cartilaginous skeletons are made of cartilage, which is a tough, flexible tissue. Sharks and rays have cartilaginous skeletons. Therefore, the most appropriate type of skeleton for a cockroach is the exoskeleton, which provides protection, support, and attachment points for muscles. Option B is the correct answer.

Correct Answer: C. Carbon(II)oxide

Correct Answer: A. \(C_2H_6\) and \(C_4H_{10}\)

Explanation

In the given options, \(C_2H_6\) (ethane) and \(C_4H_{10}\) (butane) both belong to the same homologous series, as they have the same alkane functional group \(C_nH_{2n}+2\) and differ by a \(CH_2\) group:

\(C_2H_6\): Ethane

\(C_4H_{10}\): Butane

Both of these compounds are members of the alkane homologous series.

Correct Answer: C. contented