-9 in power means that the value is in fractional and the 10 base is multipied 9 times and put it on denominator.
8.6 = 86 x 10^-1
Let's multiply :
86 x 10^-1 x 10^-9
= 86 x 10^-10
= 86/10000000000
=0,0000000086
Note : if you don't know about how 10^-1 x 10^-9 returns 10^-10, it's because of exponential rules. If the base are same wuth each other, then just do the addition operation in the exponent like this :
10^(-1+(-9))
= 10^(-1-9)
=10^-10
Hope it helps :)
Answer:
C and D
Step-by-step explanation:
Here, you just have to multiply each equation out. In order, it goes:
16x + 320
16x + 36x
16x + 36
16x + 36
16x + 72
Only C and D match 16x + 36, so those are your answers.
Answer:
chemicals
Step-by-step explanation: everything we see and touch is made up of a mixture of chemicals
Answer:
22.23 yd²
Step-by-step explanation:
The figure is a trapezium and area can be calculated using the formula
A = 
h(a + b)
where h is the height and a, b the parallel bases
here h = 5.7, a = 5.9 and b = 1.9
A= 0.5 × 5.7(5.9 + 1.9) = 0.5 × 5.7 × 7.8 = 22.23 yd²
