Answer:
36
Step-by-step explanation:
it is given that there are total of 80 students
in German language there are 25 students
in French language there are 15 students
13 studying Spanish language
in German and French language there are 3 students
in French and Spanish language there are 4 students
in German and Spanish language there are 2 students
3 are studying all three languages
from the given bellow ven diagram
it is clear that the number of students that are not studying any languages are =80- (20+3+8+4+2+7)=36
Answer:
$720
Explanation:
3 (yd³) per minute per worker.
4*3=12 yd³ per minute in total.
12*60 = 720 yd³ per hour.
8920 yd³ ÷ 720 yd³ = 12.388889 hours of work.
15$ a worker/hour x 4 workers = $60 per hour in total. Since there are only 12 whole hours in 12.388889, $60/hour x 12 full hours = $720 for all work done.
Answer:
1). Simplifying
-4x + y = 6
Solving
-4x + y = 6
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1y' to each side of the equation.
-4x + y + -1y = 6 + -1y
Combine like terms: y + -1y = 0
-4x + 0 = 6 + -1y
-4x = 6 + -1y
Divide each side by '-4'.
x = -1.5 + 0.25y
Simplifying
x = -1.5 + 0.25y
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2). Simplifying
-5x + -1y = 21
Solving
-5x + -1y = 21
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add 'y' to each side of the equation.
-5x + -1y + y = 21 + y
Combine like terms: -1y + y = 0
-5x + 0 = 21 + y
-5x = 21 + y
Divide each side by '-5'.
x = -4.2 + -0.2y
Simplifying
x = -4.2 + -0.2y
Hopes this helps:
Answer: A. a < -4
Have a great day.
Answer:
Step-by-step explanation:
