Hours He will work in this Week=20 hours.
Number of Hours he will Teach=x
Number of Hours He will Eat icecream=y
We know
x+y=20
x=20-y (Equation 1)
Teaching French=$12
Eating Icecream=$8
Let He Total Money he Earn from Teaching.
=12×Number of Hours he work
=$12x
Eating Icecream=$8
Total money spent=$8y
But Total Money=$190
MEANS
$12x+$8y=$190
12(20-y)+8y=190
240-12y+8y=190
-4y=190-240
-4y=-50
y=50/4
y=12.5
We know x+y=20
x+12.5=20
x=20-12.5
x=7.5 hours
MEANS He have to teach At least =7.5 hours.To make $190
Difference/original
783 - 540 = 243
243/540 = 0.45
0.45 * 100 = 45
45% = increased percentage
Answer:
(9, 6)
Step-by-step explanation:
add equations together: (x + y = 15) + (x - y = 3) --> x + x + y - y = 15 + 3 --> 2x = 18
isolate the variable: 2x/2 = 18/2 --> x = 9, so the x-coordinate is 9
substitute 9 in x's place in one of the equations: 9 + y = 15
solve for y: y = 15 - 9 --> y = 6, so the y-coordinate is 6
combine x and y coordinates together: (9, 6)
The answer is B) 43<span>°
Angle ADB is an inscribed angle which means arc AB has an angle twice that of angle ADB. The angle of the arc would be the same as that of the central angle AOB. So, mAOB = 86</span>°. And since, mAOB = mBOC, then mBOC = 86° and arc BC has a measure of 86° as well. Angle BDC intercepts the arc BC which means half of the angle of arc BC is mBDC. So, mBDC = 43<span>°.</span>
Answer: 49/30 or, 1 19/30
