Answer:
6 hours
Step-by-step explanation:
Let
x----> the number of hours worked at the donut shop
y----> the number of hours worked at the school bookstore
we know that
x+y=20
x=20-y -----> equation A
10.25x+8.75y=196 -----> equation B
Substitute equation A in equation B and solve for y
10.25(20-y)+8.75y=196
205-10.25y+8.75y=196
10.25y-8.75y=205-196
1.5y=9
y=6 hours at the school bookstore
Answer:
1832 miles
Step-by-step explanation:
First we need to find the angle between the routes of the planes.
If one is N30°W and the other is S45°W, we can find the angle between the routes with the following equation:
30 + angle + 45 = 180
angle = 105°
Then, we need to find the distance travelled by each plane, using the formula:
distance = speed * time
The time is 1.5 hours, so we have that:
distance1 = 800 * 1.5 = 1200 km
distance2 = 750 * 1.5 = 1125 km
Now, to find the distance between the planes, we can use the law of cosines:
distance^2 = 1200^2 + 1125^2 - 2*1200*1125*cos(105)
distance^2 = 3356214.43
distance = 1832 miles
A and C are the correct answers
It's 67/4=16.75
your answer is 16.75
We know that
[scale]=[doll house]/[<span>real house]
[scale]=12 in/3 ft
</span><span>The living room in stacy's house is 18 feet by 12 feet
</span>so
for 18 ft
[doll house]=[scale]*[real house]-----> (12/3)*18--------> 72 in
for 12 ft
[doll house]=[scale]*[real house]-----> (12/3)*12--------> 48 in
The living room in doll house is 72 in by 48 in
The living room area in doll house is (72*48)-----> 3456 in²
<span>Tom will need for the living room in Stacy's doll house 3456 in</span>² <span>of carpeting
the answer is </span>3456 in² of carpeting
