Answer:
Step-by-step explanation:
Let the first number be = X
Let the second number be= y
X+Y=86 -------1
X-Y=38 --------2
adding equation 1 & 2
2X=124
X= 62
Put X in equation 1
62+Y= 86
Y=86-62
Y= 24
Therefore X= 62 and y=24
The slope is -15/0 so the slope is zero
Answer:
total amount of sweets=230
Step-by-step explanation:
ratio=8:5:10
total ratio=8+5+10
=23
Adrian=x
Charlie= x+20
Ben=1/2×(x+20)
Charlie's share
10/23×(x+20+x+(1/2×x+20))=x+20
10/23×(x+20+x+(x+20/2))=x+20
10/23×(x+20+x+x+20/2)=x+20
10/23×(2(x+20)+(2×x)+(x+20/2)/2=x+20
10/23×(2x+40+2x+x+20)/2=x+20
10/23×(2x+2x+x+40+20)/2=x+20
10/23×(5x+60)/2=x+20
50x+600/46=x+20
50x+600=46(x+20)
50x+600=46x+920
50x-46x=920-600
4x=320
4x/4=320/4
x=80
Total amount of sweet
x+x+20+1/2(x+20)
80+80+20+1/2(80+20)
180+1/2(100)
180+50
230
Answer:
76 mph
Step-by-step explanation:
Let x mph be the speed of the aircraft and y mph be the speed of the wind.
<u>With the wind:</u>
Distance = 798 miles
Time = 3 hours
Speed = x + y mph
Then
<u>Against the wind:</u>
Time = 7 hours
Speed = x - y mph
Then
Add these two equations:
Subtract these two equations:
The speed of the aircraft is 190 mph, the speed of the wind is 76 mph
15.25 is the answer of the question
