Answer:
4-9=-5
Step-by-step explanation:
Answer:
Second option:
Step-by-step explanation:
We can observe that the radius of the circle is given. This is:
And the missing measures are the diameter of the circle and the circumference.
Since the diameter of a circle is twice the radius, we get that this is:
To find the circumference of the circle, we can use this formula:
Where "r" is the radius of the circle.
Substituting the radius into the formula, we get:
Answer:
The value za/2 needed to constrict a confident interval with level 87% is 1.51
Step-by-step explanation:
At 87% confidence level the z is ,
α= 1 - 87%
= 1 - 0.87
= 0.13
α/ 2 = 0.13 / 2
= 0.065
Zα/2 = Z0.065
= 1.51 ( Using z table )
Answer:
So a ratio of 8:3 means for every 8 cars that is 3 trucks so we have the number of trucks which is 21 so what i did to find the answer was see how many times 3 went into 21 which is 7 times then you would take the 7 and times it by 8 and get 56 so there are 56 cars.
Step-by-step explanation: