Answer:
x represents hours of babysitting
y represents hours of music lesson
hours on babysitting: 11
hours on music lessons: 7
Step-by-step explanation:
x+y=18
5x+12y=139
-5(x+y=18)
=-5x-5y=-90
(5x+12y=139) + (-5x-5y=-90)
7y=49
y=7
x+7=18
x=11
21 cents =75%
divide both sides by 3
7cents= 25%
multiply each side by 4
28=100%
Answer=28
Answer:
Although the Line is included in the region, I will say the your answer is B and D
Step-by-step explanation:
The region shaded is below the Line graph, son we have a < sign, now, I can see the region including the Line graph, so I will say that the inequality should have the = sign, nevertheless no options include the =sign, so, if it is nothing missing, your answer should be:
y<x
Answer:
1.
Step-by-step explanation:
cos 30 = √3/2 (obtained from the 30-60-90 triangle)
sin 60 = √3/ 2 ( as above)
cot 60 = 1 / tan 60 = 1/√3 (as above)
So (cos30°+sin60°)cot60° = (√3/2 + √3/2) / √3
= 2√3/2 / √3
= √3 / √3
= 1.
Let the number be x.
3 3/5 of x = 4/5
18/5x = 4/5
x = 4/5 x 5/18
x = 4/18 = 2/9
The number is 2/9
