Answer:
3:24 = 1:8
Step-by-step explanation:
for every 8 faces, there is 1 tongue
Let X represent a random variable representing the birth weights of babies, and let x be the required cut-off, then
P(X < x) = 0.02
P(z < (x - 3419)/494) = 0.02
1 - P(z < (3419 - x)/494) = 0.02
P(z < (3419 - x)/494) = 1 - 0.02 = 0.98
(3419 - x)/469 = 2.04
3419 - x = 956.76
x = 3419 - 956.76 = 2462.24
Therefore, the weight to be used as cut-off is 2462.24 g
Answer:
(4)(2) - (-5)(2)
8 - (-10)
8 + 10
18
Step-by-step explanation:
Answer:
The cost of a shirt is $16 and the cost of a sweater is $33
Step-by-step explanation:
Let
x -----> the cost of a shirt
y -----> the cost of a sweater
we know that
-----> equation A
----> equation B
Solve the system by graphing
Remember that the solution of the system is the intersection point both graphs
The solution is the point (16,33)
see the attached figure
therefore
The cost of a shirt is $16 and the cost of a sweater is $33
Answer:
r = (-1)
Step-by-step explanation:
Firstly simplify the brackets,
; -3(1 + 6r) = -3 - 18r
then substitute on the bracket with the simplified form,
; -3 - 18r = 14 - r
then move the values with (r) to one side and the other ones without (r) to the other side
; -3 - 14 = 18r - r
; -17 = 17r
then divide both sides by 17,
; -1 = r
Hence...r = -1
