Answer:
72 cards. Aaron is the difference between Linda ad Paul, therefore it is 72. There is a different way to solve it but it's way more complicated
Well I don't know !
Let's check out the choices:
A). 3a - 4b = 21, a=0, b=7
3(0) - 4(7) = 21
0 - 28 = 21 Nope. That's not true.
B). 3a - 4b = 21, a=-3, b=2
3(-3) - 4(-2) = 21
-9 + 8 = 21
-1 = 21 Nope. That's not right.
C). 3a - 4b = 21, a=-2, b=-3
3(-2) - 4(-3) = 21
-6 + 12 = 21
6 = 21 Nope. That's not it.
Only one choice left.
This one had better be it:
D). 3a - 4b = 21, a=7, b=0
3(7) - 4(0) = 21
21 - 0 = 21
21 = 21 Yay ! That's it !
Answer:
2400
Step-by-step explanation:
using simple ratio
we have Account A : account B as
8:12
2:3 .....the 8% account gets
2/5 × 6000
= 2× 1200 = 2400
What sample size is needed so that the length of the interval is $60 with 95% confidence? We Assume: σ = $150.
Showing Work:
n ======> is the sample size we want to find:
N = ( z a/2^σ / E )^2
= ( 1.96 * 150 / 30 )^2 (margin of error is 1.96 times the standard error):
Answer: =======> 96.04 ≈ 97
Hope that helps!!!! : )
Answer:
d=√((x2-x1)²+(y2-y1)²)
d=√(-4+2)^2 + (2+5)^2
d=√(4+49)
d=√53
Let me know if this helps!