GCSE Maths Calculator Higher Quiz Welcome to your GCSE Maths Calculator Higher Quiz Use the quadratic formula to find the positive solution to \(5x^2 - 4x - 7 = 0\). Give your answer to 1 decimal place. A number is rounded to 1 decimal place. The result is 72.9. What is the lower bound for the number? Β£2500 is invested at 2.1% annual compound interest. How much is the investment worth after 5 years? Find the length of side AB. Give your answer in centimetres to 1 decimal place. Solve \(3x - 7 = 2(x + 4)\). Given the sets below, select the numbers in \(A \cap B\). ΞΎ = {integers from 1 to 10}A = {odd numbers}B = {factors of 60} 1 2 3 4 5 6 7 8 9 10 Find the highest common factor of \(2^3 Γ 3 Γ 5^2\) and \(2^5 Γ 5 Γ 7\). Find the size of angle ACB. Give your answer to 1 decimal place. Find the value of \( \frac{32 \times 18}{\sqrt{98}}\). Write out your whole calculator display. Time is Up! Time's up More?