Answer:
X=4
Step-by-step explanation:
distribute the 4 to the ones in the parenthesis
-4x+28=12
move the 28 over and change the sign
-4x=-16
divide by -4
x=4
Answer:
The actual answer is 10.5+7.25π units²
I just took the test
Answer:
2x squared + 2x + 3
Step-by-step explanation:
you can either use synthetic division or use long division. either way will work. search up synthetic and long division on y___ube and you should get it
Answer:
0.2 = 20% probability that a student takes Spanish and engineering
Step-by-step explanation:
We solve this question treating the probabilities as Venn sets.
I am going to say that:
Event A: Student takes Spanish
Event B: Student takes Engineering.
35% of students take spainsh or engineering.
This means that 
30% of students take Spanish.
This means that 
25% of students take engineering.
This means that 
What is the probability that a student takes Spanish and engineering?
This is 
.
These probabilities are related by the following formula:
So
Replacing the values
0.2 = 20% probability that a student takes Spanish and engineering
Plug the points into the distance formula.
d= (sqrt) (x2-x1)^2+(y2-y1)^2
Plug the first set of points in. (-2,1) (6,1)
d= (sqrt) (6-(-2))^2+(1-1)^2
d= (sqrt) (6+2)^2+(0)^2
d= (sqrt) 8^2+0
d= (sqrt) 64
d= 8
Now, find the distance for the other two points. (6,1) (6,-3)
Q to R.
d= (sqrt) (x2-x1)^2+(y2-y1)^2
d= (sqrt) (6-6)^2 +(-3-1)^2
d= (sqrt) 0^2+-4^2
d= (sqrt) 16
d= 4
Now, finally, find the distance between R and S. (6,-3) and (9,-3)
d= (sqrt) (x2-x1)^2 + (y2-y1)^2
d= (sqrt) (9-6)^2+ (-3-(-3)^2
d= (sqrt) 3^2+ 0^2
d= (sqrt) 9
d= 3
Now, add all those distances together.
8+4+3= 15
"B" is the correct answer. 15 units.
I hope this helps!
~kaikers
