Answer:
1)
.
2) 
hence, answer is 7/12.
3) We have to divide £72 in the ratio 2:3:1
the total of the ratio is=2+3+1=6
so on dividing 72 into 6 parts we have 72/6=12
First '2' parts=2×12=24
second '3' part=3×12=36
last '1' part=1×12=12
so dividing £72 in the ratio 2:3:1 is: £24,£36 and £12
4) 39 people out of 65 have blonde hair.
Number of people who do not have blonde hair=65-39=26
percentage people who do not have blonde hair is given by:

Hence, percentage people who do not have blonde hair is 40%
5) 20% of 90= (20/100)×90
=18
Hence, 20% of 90 is 18.
6) Factorise

7) Expand

8)
.
9)

10)

11) x= -4 y=3
and z=4 x-y^3
z=4×(-4)-3^3
z= -43
12) 
13) 
Hence x= -2
14) 5,10,15,20,....
Hence, nth term is 5n.
15) (63×128)/32.9=245.106.
16) 938×21=19698.
Answer: 55
Step-by-step explanation:
(* is a multilpication sign)
(2xy-z^3)/z
(2*12*8-3^3)/3
(192-27)/3
165/3
=55
:) -KJ
Answer: The cost of 7 roses and 8 petunias is $41.
Step-by-step explanation:
Given, Bethany sells roses and petunias. The expression
, gives the cost (in dollars) of r roses and p petunias.
Now to find the cost of 7 roses and 8 petunias , put r= 7 and p= 8 in the above expression , we get

Hence, the cost of 7 roses and 8 petunias is $41.
Answer:
3x+9
Step-by-step explanation:
since p(x) means p multiplied by x and the answer is 3x it means p=3 so 3(x+3) you multiply 3 by x which is 3x and 3 times 3 which is 9 so 3x+9
Answer:
780 people
Step-by-step explanation:
65% of 1,200 is 780