The time taken by the acorn to fall 1.16 seconds
A can do 1 job in 10 min. means 1/10 job per min.
B can do 1/15 job per min.
together A&B can do 1/10+1/15 =1/6 job per min.
1/6 job they spend 1 min
1 spend 1x1/(1/6) = 6 min
Answer:
C and B
Step-by-step explanation:
(6)
× 
← cancel 3x - 7y on numerator and denominator
= 
× 
= 
= 
→ C
(7)
÷ 
Factorise the denominators of both fractions
x² - 9 = x² - 3² = (x - 3)(x + 3) ← difference of squares
4x - 12 ← factor out 4 from each term
= 4(x - 3)
Then rewrite as
÷ 
← cancel 8 and 4 by 4
= ÷ 
• leave first fraction, change ÷ to × , turn second fraction ' upside down'
= × 
← cancel x - 3 on numerator and denominator
= 
× 
← cancel 2 and 6 on numerator and denominator
= 
→ B
Answer:
2 out of 10
Step-by-step explanation:
Simple math
Answer:
g = -15
Step-by-step explanation:
First, you are going to want to divide by -11 on both sides of the equation.
— (4 + g) (-11) / -11 = 121 / -11
— 4 + g = -11
(Note: dividing a positive number by a negative number will result in a negative number.)
Next, subtract 4 from both sides of the equation.
— 4 + g - 4 = -11 - 4
— g = -15
So, assuming you are looking for the value of g, you're answer is g = -15
