Answer:
(3z+15) cm
Step-by-step explanation:
Perimeter: z cm + 8 cm + (z+3) cm + (z+4) cm = z cm + (z+3) cm + (z+4) cm +8 cm = (3z + 7) cm + 8 cm = (3z+15) cm.
Answer:
Step-by-step explanation:
hello :
let four consecutive whole numbers : n , n+1 , n+2 , n+3
the sum is : n + n+1 + n+2 + n+3 =4n+6
you can write 4n+6 to the form : 2(2n+3) means 2k ( k=2n+3)
so even number
From the diagram:
AB + BC = AC
we know that AC = 42, therefore:
AB + BC = 42 ..............> equation I
We know that the ratio AB:BC is 3:4. This means that:
AB/BC = 3/4
4AB = 3BC
AB = (3/4) BC ...............> equation II
Substitute by equation II in equation I to get BC as follows:
(3/4) BC + BC = 42
1.75 BC = 42
BC = 24Substitute with the value of BC in equation II to get AB as follows:
AB = (3/4) * 24 = 18
85% of 920
85% * 920
85/100 * 920
0.85 * 920
doing work . . .
782
Answer : 782
*Hope that helps :)*
Answer:
66m*2
Step-by-step explanation:
2(20m + 13m)
= 66m*2