20.41
(one pound is .454 kilograms)
1) Let x be the original speed that he was driving;
x mph ---> 1.5 hours
x+44 mph --> 2.5 hours
1.5x + 2.5(x+44)=206
1.5x+2.5x+110=206
4x=206-110
4x=96
x=24
Therefore, he was travelling at 24 mph in the fog.
2) Let x be the speed of 1 snail,
The other snail travels at the speed of x+1 cm/min
23x+23(x+1)=391 <-- solve for x
23x+23x+23=391
46x=368
x=368/46
x=8
Therefore one of the snail travels at 8 cm/min while the other goes at 9 cm/min
7) Let x be one crew
Then the other crew would be working at x+0.5
3.2x+3.2(x0.5)=8 <-- solve for x
3.2x+1.6x=8
4.8x=8
x=8/4.8
x=1.6666 or 1.7 miles
Therefore, one of the crew does 1.7 miles per day and the other crew does (0.5*1.7)=0.85 miles
Hope I helped :)
Answer:
w = 5
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−4(w+1)=−24
(−4)(w)+(−4)(1)=−24(Distribute)
−4w+−4=−24
−4w−4=−24
Step 2: Add 4 to both sides.
−4w−4+4=−24+4
−4w=−20
Step 3: Divide both sides by -4.
-4w/-4 = -20/-4
w=5
<em>Hope this helped and plz mark as brainliest!</em>
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<em>Luna G.</em>
