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True [87]
3 years ago
9

Pls help!!!!!!!!!!!!!​

Mathematics
1 answer:
Wewaii [24]3 years ago
7 0

Answer:

All triangles have 180 degrees.

Step-by-step explanation:

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The answer is B.) mate

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Helllp im doing my exam !
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log x ( 5 × 12 ) = 7

x^7 = 60

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What is a swing state?
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swing state

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Step-by-step explanation:

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Serenity Spa charges $59 for a one hour massage. They charge $0.95 per minute for each additional minute over an hour. If
Yanka [14]

Answer:

D. y = 0.8x + 79

Choices:

A.  

y = 79x + 0.8

B.  

y = -0.8x + 79

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5 0
3 years ago
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

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

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

average speed = 53 1/3 km/h

3 0
2 years ago
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