Perform the following calculations without rewriting the numbers in decimal form.
(1.42 × 10^−50)/(2 × 10^13)

0.71×10⁻⁶³

Step-by-step explanation:

Here in this problem, the expression (1.42×10⁻⁵⁰) / (2×10¹³) is given and we have to calculate the result not rewriting the numbers in decimal form.

Now, the given expression,

(1.42×10⁻⁵⁰) / (2×10¹³)

= {All the terms are in product form, so we can rearrange this}

=()()

=(0.71)() {We know the formula of indices }

=0.71×10⁻⁶³ (Answer)

multiple all that

step-by-step explanation:

27×17

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -