Answer:
1
Step-by-step explanation:
By PEDMAS, do multiply & division first, then do subtraction
21 ÷ 7 * 3 - 4 * 2
= (21 ÷ 7 * 3) - (4 * 2)
= (3 * 3) - (8)
= 9 - 8
= 1
Answer: p = 1/8
Step-by-step explanation:
If p = 1/8, then 7 would equal 7/8 and 2n would become 2n/8 or 1/4n
Answer:
2<7
Step-by-step explanation:
-7<=-2
-7+9<-2+9
2<7
Answer:
option B is correct
Step-by-step explanation:
Answer:
She should invest 6976.74 $ principal on daughter's 12th birthday.
Explanation:
We have I = prt, where I represents simple interest, p represents principal, r represents interest rate, and t represents time in years.
Here p + I = 12,000 $
So, I = 12000-p
Interest rate r = 12% =0.12
Number of years = 18 - 12 = 6 years.
Substituting
12000-p = p x 0.12 x 6
p + 0.72 p = 12000
1.72 p = 12000
p = 6976.74 $
So, she should invest 6976.74 $ principal on daughter's 12th birthday.
