Numbers 8/9 and 47/70 are between 3/5 and 5/7
Step-by-step explanation:
- Step 1: Find the equivalent decimal expressions of all the given fractions to find which ones are between 3/5 and 5/7
3/5 = 0.6 and 5/7 = 0.71
Option 1 ⇒ 1/2 = 0.5
Option 2 ⇒ 3/7 = 0.43
Option 3 ⇒ 8/9 = 0.89
Option 4 ⇒ 19/35 = 0.54
Option 5 ⇒ 47/70 = 0.67
∴ 8/9 and 47/70 lies between 3/5 and 5/7
Answer:
(a - b)^2 = 49 - 4b^2 +2ab
Step-by-step explanation:
Given: a^2 + b^2 = 7b (assuming A is really “a”)
b^2 + (2b - a)^2 = 7^2
Find; (a - b)^2
Plan: Use Algebraic Manipulation
Start with b^2 + (2b - a)^2 = 7^2 =>
b^2 + 4b^2 - 4ab + a^2 = 49 by expanding the binomial.
a^2 + b^2 + 4b^2 - 4ab = 49 rearranging terms
a^2 + b^2 -2ab - 2ab + 4b^2 = 49 =>
a^2 - 2ab + b^2 = 49 - 4b^2 +2ab rearranging and subtracting 4b^2 and adding 2ab to both sides of the equation and by factoring a^2 - 2ab + b^2
(a - b)^2 = 49 - 4b^2 +2ab
Double Check: recalculated ✅ ✅
(a - b)^2 = 49 - 4b^2 +2ab
12 hours u half to divide it equally
It’s a right angle. it follows the circle theorem ‘the angle in a semi-circle is 90 degrees’
Answer:
60°
Step-by-step explanation:
The angle y°;
;A straight line makes an angle of 180°....so hence the angle y°
; 180° - 120° = 60°
