1 1/2 miles in feet is 7920
Answer:
.037 feet
Step-by-step explanation:
perimeter = the sum of all four sides so
perimeter = (4x-9.5) + (9.5x + 10) + (4x - 9.5) + (9.5x + 10) = 27x = 1
therefore x = 1/27 = .037 feet
Answer:
Step-by-step explanation:
To use the quadratic formula, we must write the quadratic in standard form, viz:
2x^2 - 4x + 7 = 0
Start by calculating the discriminant. That's b^2 - 4(a)(c). Here,
a = 2, b = -4 and c = 7, and so the discriminant for this particular problem is
(-4)^2 - 4(2)(7), or 16 - 56, or 40.
Recall that a positive discriminant indicates two real, unequal roots.
Now we write out the whole quadratic formula, with the appropriate constants inserted (see above):
-(-4) ± √40 4 ± (√4)(√10) 4 ± 2√10
x = --------------------- = ---------------------- = ---------------
2(2) 4 4
2 ± √10
which reduces to x = --------------
2
Answer: -6.26
Step-by-step explanation:
Test statistic for population proportion is given by :-
, where p = population proportion.
= sample proportion.
n= sample size.
As per given , we have
n= 1021
Then, the test statistic will be :-
Hence, the value of the test statistic is -6.26 .
Answer:
2
Step-by-step explanation:
-10 + x = - 8 add 10 to both sides of the equation
x = 2