Answer:
1.6/-8
Step-by-step explanation:
Rate of change is slope. So you need to use the slope formula: m=(y2-y1)/(x2-x1). You can decide which pairs will be 1 and 2 and will get the same answer, but keep the pairs together. So, if you do (3.6-2)/(-3-5) you will get 1.6/-8. If you needed to simplify to a fraction without a decimal you could do 1.6/-8 = .8/-4 = 8/10 x 1/-4 = -1/5.
1=104 2=76 3=104 4=76 5=104 6=76 7=104 8=76
Answer:
The speed of jet in still air is 750 miles per hour and speed of wind is 130 miles per hour.
Step-by-step explanation:
Given that:
Distance traveled by jet against the wind = 2480 miles in 4 hours
Combined speed = =
Combined speed = 620 miles per hour
Distance traveled with wind = 7040 miles in 8 hours
Combined speed =
Combined speed = 880
Let,
Speed of jet = x
Speed of wind = y
When jet travels against the wind, the speed will be subtracted
x-y=620 Eqn 1
When jet travels with the wind, the speed will be added
x+y=880 Eqn 2
Adding Eqn 1 and 2
(x-y)+(x+y)=620+880
x-y+x+y=1500
2x=1500
Dividing both sides by 2
Putting x=750 in Eqn 2
750+y=880
y=880-750
y=130
Hence,
The speed of jet in still air is 750 miles per hour and speed of wind is 130 miles per hour.
X+6 + x+10 = 2x + 16,,, 2x + 16 = 30, 30 - 16, 14 = 2x,,,14/2 =x,,, x = 7,
DE =13
7/8
Answers:
14/16- divide the denominator and numerator by 2. 14/2=7, 16/2=8 : 7/8
35/40- divide the denominator and numerator by 5. 35/5=7, 40/5=8 : 7/8
42/48- divide the denominator and numerator by 6. 42/6=7, 48/6=8 : 7/8
49/56- divide the denominator and numerator by 7. 49/7=7, 56/7=8: 7/8