Answer:
-3, if we assume that we only want positive square roots.
Step-by-step explanation:
Take the (positive) square root of both 64 and 121 to get 8 and 11. 8-11= - 3.
Hope this helps :)
Solution :
a). The test is a left tailed test.
b). The sample proportion is :
= 0.065
Determining the Z statistics using the formula :
= -2.31
∴ Z statistics value is -2.31
c). Using the excel function, the P-value is :
P-value = Normsdist(-2.31)
= 0.0104441
d). The null hypothesis is
The level of significance is 0.01
We fail to reject the null hypothesis as the P value is less than or equal to the significant level.
Answer:
10 feet
Step-by-step explanation:
Let the length and the age of the sea turtle be L inches and A years old respectively.
Since its length is directly proportional to its age,
L= kA, where k is an unknown constant.
Let's find the value of the constant k.
L= kA
When L= 3, A= 2,
3= k(2)
2k= 3
k= 3 ÷2
Substitute the value of k back into the equation:
When A= 80,
L= 120
Length of sea turtle
= 120 inches
= (120 ÷12) feet
= 10 feet
Answer:
x=2
Step-by-step explanation:
(x+2)(x-6)= y
0 = x+2 0 = x-6
The zeros of the functions are at -2 and 6 using the zero product property
We know a parabola is symmetric so the vertex is 1/2 way between the zeros
(-2+6)/2 = 4/2 =2
The x coordinate of the vertex is at 2
Answer:
<em>(14, -7)</em>
Step-by-step explanation: