Answer: I'm not sure but 7 times 7 equals 49 and then u do 6 times 4 which is 24 so she doesn't have enough.
Step-by-step explanation:
Answer:
n is 192
Step-by-step explanation:
Given data
Cl = 95%
interval = 0.2
to find out
what value n
solution
we have interval = 0.2
so interval has width at most is 0.5 so
margin of error E = 0.2 /2 = 0.1
and we know Z value for 95% Cl is 1.96 from z table
so sample n = Z²/E² ( ( 1 - 0.5) 0.5 + ( 1 - 0.5) 0.5 )
n = 1.96²/0.1² ( ( 1 - 0.5) 0.5 + ( 1 - 0.5) 0.5 )
n = 192.08
so n is 192
Answer:
Step-by-step explanation:
To find the surface area of a composite 3D figure, add the areas of each geometric figure making up the composite 3D figure. To find the volume of a composite 3D figure, draw any necessary planes to view the figure as basic three dimensional figures, then: add basic figure volumes belonging to the composite shape.
Answer:
the right one is b
Step-by-step explanation:
because if you add all of the other oned it would be 24
Answer:
Faster jet = 650
Slower jet = 650 - 89 = 561
Step-by-step explanation:
Given
total distance apart = 4844
t = 4 hours
r1 = r
r2 = r - 89
Equations
d = r * t
r*t + (r - 89)*t = 4844
Solution
r*4 + (r - 89)*4 = 4844
4r + 4r - 356 = 4844 Combine the left
8r - 356 = 4844 Add 356 to both sides
8r = 4844 + 356
8r = 5200 Divide both sides by 8
r = 5200/8
r = 650