1)
A has a greater principal
2)
Principal of A is $500, the principal of B is $400, so A's principal is greater by $100
3)
Annual interest rate of A:
10/500 x 100
interest rate of A = 2%
The interest rate of B is higher.
4)
B's annual interest rate is 5% and A's annual interest rate is 2%, so B's is higher by 3%.
Answer:
240 min
Step-by-step explanation:
if we convert it to minutes, one pool is drained in 360 min, while using another pump requires 720 min. the problem requires them working together, so we need to find the amount of pool drained in a unit pace, being one minute. using the first pump, in 1 minute 1/360 of the pool is drained, and 1/720 for the second pump. We can add them together, thus gaining 3/720 of the pool drained in 1 minute if they are applied together. then, you calculate 720/3 to find out how many minutes it takes for the whole pool to be drained, and you get 240
Answer:
d) 54
Step-by-step explanation:
Let's name x the age of Kylie.
Then we have:
K = x
Joan is 2 years younger than Kylie ⇒ J = x - 2
Kylie is 3 years older than Lilian ⇒ L = x - 3
Miriam is one year older than Joan ⇒M = (x - 2) + 1 = x - 1
If we sum up all ages we get: x + x -2 + x - 3 + x - 1 = 4x - 6
<u>Therefore, the sum of all ages is 4x - 6. </u>
Let's make x = 14 ⇒ 4x - 6 = 4(14) - 6 = 50
Let's make x = 15 ⇒4x - 6 = 4(15) - 6 = 54
Let's make x = 16 ⇒4x - 6 = 4(16) - 6 = 58
If we substitute for smaller x, we'll get values smaller than 50 and if we substitute for x >16 we'll get values greater than 58.
Looking at the options given by the problem, we can see that the only one that fits into the equation is d) 54.
Answer:
-11x + 7y = 20
Step-by-step explanation:
See image. Multiply
2(-2x + 2y = 16)
You get -4x + 4y = 32
Then line that guy up underneath the
-15x + 3y = -12. You're adding vertically from the top down, x's with x's and y's with y's and plain numbers with plain numbers. See image