The lengths, in cm, of the sides of a triangle are 3x - 5, 2x - 1 and x + 1 2x - 1
3x - 5
四
x + 1
(a) Write down an expression, in terms of x, for the perimeter of the triangle.
(2)
The perimeter of the triangle is 31 cm.
(2)
(b) Work out the value of x.
question 1 is 4 marks)​

The volume of a cube is 8 in to the 3rd power. how long is each side?

Can someone me do math because i am having a breakdown rn because i don’t get it

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.