angle B& C = 180
C & D = 180
A & D = 180
A & B = 180
A & C are identical so angle x = 63
angle Z = mirrored angle which is 72
180-63 = 117-72 = 45
so angle y = 45
Based on ur graph, in a class of 90 students (20 rock, 40 hip hop, and 30 country...added = 90) , 30 chose country....30/90 reduces to 1/3.....so 1/3 chose country.
In a class of 450 students......1/3 * 450 = 450/3 = 150 chose country
Hope this helps!
Answer:
65°
Step-by-step explanation:
If you add all the angles in a triangle, they equal 180°. You can subtract given angles to find missing angles.
Let's first subtract 25° from 180°. 180° - 25° = 155°.
This is a right triangle, so we know there is also a 90° angle. Also subtract this. 155° - 90° = 65°.
We are left with 65°. This is the measure of the third angle.
The triangle's angles are, 25° ; 90° ; 65°
Answer:
The 90% confidence interval is 
Step-by-step explanation:
From the question we are told that
The sample size is n = 64
The sample mean is 
The standard deviation is 
Given that the confidence interval is 90% then the level of significance is mathematically evaluated as
Next we obtain the critical value of 
from the normal distribution table , the value is
Generally the margin of error is mathematically represented as
=> 
=> 
The 90% confidence interval is mathematically represented as
=> 
=>
Answer:
Jacob is dividing 6 aquariums into 1/8 of an aquarium sections for his different animals. How many 1/8's are there in Jacobs aquariums?
To get the number of 1/8 in Jacobs aquariums,we simply divide 6 by 1/8
6 ÷ 1/8
But whenever you are dividing by a fraction, you can simply change the division to multiplication in order to make your work easier, all you need to do to change the division to multiplication is to simply turn the number over, that is; the denominator becomes the numerator and the numerator becomes the denominator,
In this case 8 becomes the numerator and 1 becomes the denominator
Hence;
6 × 8 /1 = 6 × 8 = 48
Therefore, the number of 1/8's in Jacobs aquariums are 48
Hope this helps, have a great day/night, and stay safe!
