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emmasim [6.3K]
3 years ago
7

Find the sum of (2x – 5) and (3x + 10)

Mathematics
1 answer:
notsponge [240]3 years ago
3 0
(2x +3x) + (-5+10) = 5x +5 combine by terms
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A train travels 250 km with a average speed of 75 km/hr and 350 km with 70km/hr and 200 km with average speed of 30km/hr. What w
pentagon [3]

Answer:

53 1/3 km/h

Step-by-step explanation:

average speed = (total distance)/(total time)

average speed = distance/time

time * average speed = distance

time = distance/(average speed)

250 km at 75 km/h

distance = 250 km

time = (250 km)/(75 km/h) = 3.33333... hours

350 km at 70 km/h

distance = 350 km

time = (350 km)/(70 km/h) = 5 hours

200 km at 30 km/h

distance = 200 km

time = (200 km)/(30 km/h) = 6.6666...  hour

total distance = 250 km + 350 km + 200 km = 800 km

total time = 3.33333... hours + 5 hours + 6.66666... hours = 15 hours

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average speed = (800 km)/(15 hours)

average speed = 53 1/3 km/h

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3 years ago
PLS HELP SOLVE FOR X
horsena [70]

Answer:

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Step-by-step explanation:

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Lapatulllka [165]
Points that are given on x+y=4 are (0,4),(3,1) and (4,0) and points that are give for x-y=2 are (0,-2),(2,0) and (3,1)

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Quanto é 48.1/2 ?<br> Help me
dolphi86 [110]

E uma divisao simples.

48.1/2 = 24.05

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A mass weighing 64lb is attached to a spring hanging from the ceiling and comes to rest at its equilibrium position. At time t=0
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The steady state solution of the system is calculated in the diagram below:

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