Answer:
use socratic
Step-by-step explanation:
Answer:
See below.
Step-by-step explanation:
The question tells us that 2.54 cm is equivalent to 1 inch. The next part wants to know what 5.08 cm is in inches. We can just divide 5.08 by 2.54 to figure that out.
5.08/2.54 = 2
This means that 5.08 cm is 2 inches.
The next one wants to know how many centimeters 10 inches is. We can 2.54 and multiply it by 10.
2.54 · 10 = 25.4
This means that 25.4 cm is 10 inches.
9/10 is the answer. Basic elementary math
1.
<span><span>time she spent walking = T
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time she spent jogging = 1.2 - T
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<span><span>2T + 4(1.2 - T) = 3.4
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<span><span>2T + 4.8 - 4T = 3.4
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<span><span>2T - 4T = 3.4 - 4.8
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- 2T = - 1.4
T = -1.4—2 = 0.7 hours = 42 minutes
Time she spent jogging = 1.2-0.7 = 0.5 hours = 30 minutes
2.
Against wind :2400 miles in 10 hours
With wind : 2400 miles in 8 hours
Speed of plane = x
Speed of wind = y
t=d/r
against the wind speed x-y mph
with the wind x=y mph
2400/(x-y)=10
2400 = 10x-10y
240 =x-y eq.1
2400/x+y=8
2400 = 8x+8y
300 = x+y eq 2
Add eq1 & eq 2 = 740 = 2x
X = 740/2 = 370 mph for plane
300 = 370 +y
Y = 370-300 = 70 mph wind speed
