J maths 23

An article when sold for N230.00 makes a 15% profit. Find the profit or loss % if it was sold for N180.00

The line 3y + 6x = 48 passes through the points A(-2, k) and B(4, 8).

Find the value of k.

Calculate the area of the composite figure above.

A rectangular plot of land has sides with lengths of 38 m and 52 m correct to the nearest m. Find the range of the possible values of the area of the rectangle

Bello buys an old bicycle for ₦9,200.00 and spends ₦1,500.00 on its repairs. If he sells the bicycle for ₦13,400.00, his gain percent is

PQRS is a cyclic quadrilateral. Find x + y

Find the area, to the nearest cm², of the triangle whose sides are in the ratio 2 : 3 : 4 and whose perimeter is 180 cm.

The area of a trapezium is 200 cm². Its parallel sides are in the ratio 2 : 3 and the perpendicular distance between them is 16 cm. Find the length of each of the parallel sides.

A circle has a radius of 13 cm with a chord 12 cm away from the centre of the circle. Calculate the length of the chord.

The perimeter of an isosceles right-angled triangle is 2 meters. Find the length of its longer side.

The graph depicts the performance ratings of two sports teams A and B in five different seasons.

In the last five seasons, what was the difference in the average performance ratings between Team B and Team A?

Find the volume of the composite solid above

Express 16.54 × 10^-5 - 6.76 × 10^-8 + 0.23 × 10^-6 in standard form

Find the compound interest (CI) on ₦15,700 for 2 years at 8% per annum compounded annually.

Evaluate ⁵⁄₈ − ³⁄₄ ÷ ⁵⁄₁₂ × ¹⁄₄

A student is using a graduated cylinder to measure the volume of water and reports a reading of 18 mL. The teacher reports the value as 18.4 mL. What is the student's percent error?

Calculate, correct to three significant figures, the length of the arc AB in the diagram above.[Take π = ²²⁄₇]

Find the area and perimeter of a square whose length of diagonals is 20√2cm.

The second term of a geometric series is −2/3 and its sum to infinity is 3/2. Find its common ratio.

A man sells different brands of an items. 1/9 of the items he has in his shop are from Brand A, 5 / 8 of the remainder are from Brand B and the rest are from Brand C. If the total number of Brand C items in the man's shop is 81, how many more Brand B items than Brand C does the shop has?

The difference between an exterior angle of (n - 1) sided regular polygon and an exterior angle of (n + 2) sided regular polygon is 6°, then the value of "n" is

Study the given histogram above and answer the question that follows.
What is the total number of students that scored at most 50 marks?

Tickets for the school play were priced at ₦520.00 each for adults and ₦250.00 each for kids. How many kids' tickets were sold if the total sales were ₦171,000.00 and there were 5 times as many adult tickets sold as children's tickets?

Use the graph of sin(θ) above to estimate the value of θ when sin(θ) = -0.6 for 0° ≤ θ ≤ 360°

Find the volume of the cylinder above

[Take π = ²²⁄₇]

Find the value of the angle marked x in the diagram above

A ship sets sail from port A (86° N, 56° W) for port B (86° N, 64° W), which is close by. Find the distance the ship covered from port A to port B, correct to the nearest km.

[Take π = 3.142 and R = 6370 km]

The angle of elevation and depression of the top and bottom of another building, measured from the top of a 24 m tall building, is 30° and 60°, respectively. Determine the second building's height.

A student pilot was required to fly to an airport and then return as part of his flight training. The average speed to the airport was 120 km/h, and the average speed returning was 150 km/h. If the total flight time was 3 hours, calculate the distance between the two airports.

Find the volume of a cone which has a base radius of 5 cm and slant height of 13 cm

A rectangle has one side that is 6 cm shorter than the other. The area of the rectangle will increase by 68 cm², if we add 2 cm to each side of the rectangle. Find the length of the shorter side.

Find the value of x in the diagram above

Which inequality describes the graph above?

The third term of an A.P is 6 and the fifth term is 12. Find the sum of its first twelve terms

Solve the logarithmic equation: log₂(6 - x) = 3 - log₂x

200 tickets were sold for a show. VIP tickets costs ₦1,200 and ₦700 for regular. Total amount realised from the sale of the tickets was ₦180,000. Find the number of VIP tickets sold and the the number of regular ticket sold

Two dice are tossed. What is the probability that the total score is a prime number.

It takes 12 men 8 hours a day to finish a piece of work in 4 days. In how many days will it take 4 men working 16 hours a day to complete the same piece of work?

Calculate, correct to three significant figures, the length AB in the diagram above.

Give the number of significant figures of the population of a town which has approximately 5,020,700 people