The two angles shown are vertical angles. They form when you cross two lines. They are opposite one another. Note: They don't have to be vertically up and down in relation to each other. It's possible to have them horizontally side by side like this.
So because they are vertical angles, they are congruent. This means they are equal in measure
x+90 = 4x
x+90-x = 4x-x
90 = 3x
3x = 90
3x/3 = 90/3
x = 30
Therefore the answer is choice C) The value of x is x = 30
We can check it by plugging this into the original equation above
x+90 = 4x
30+90 = 4*30
120 = 120
our answer checks out
Answer:
B) 83.457
Step-by-step explanation:
80 + 3 + 0.4 + 0.05 + 0.007 = 83.457
All three methods would be efficient
4 because 26+4 is equal to 30
Density per square block means the area:
Area = Length x width = 2 x 2 = 4 square blocks.
Now for density divide the population by the area:
1.5 million people / 4 square blocks = 0.375 million people per square block
0.375 million = 375,000
