Question

Can someone help me work out these please thanks x

8) work out 12 divided by 0.4
9) round off 48.7 to one significant figure
10) the square root of 1000 divided by (7.6x1.9)
11) if x=2 calculate the value of x^2 + x^3
12) solve 5x+2=2x+14
13) find the nth term of this sequence 5, 10,15,20,25
14) if y=2x+3 find the value of y when x=-3
15)calculate the length of the circumference of a circle with a diameter of 2.6m (2dp)
16)expand and simplify (x-3)(x-4)
17)solve 3x+11< (with like a line underneath) 2
18)work out the value of xy+y when x=-3 and y=2
19)write down the next term in this sequence 3,5,9,12,15,23

Answer 1

8) 30
9)50
10)
11) 12
12)
13)n^2+3
14) y=-3
15)8.17
16)x^2 -7x+12
17)
18) -4
19)