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Nana76 [90]
3 years ago
6

Please help Simplify 3 - (2- 8).O -1O 7O -7O 9​

Mathematics
1 answer:
Galina-37 [17]3 years ago
5 0

Answer:

3-(2-8)

3-(-6)

3+6

9

d).9

Step-by-step explanation:

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Sammy is trying to determine how many triangles she can create out of a square grid that has a side of 10 inches. Use the image
Oksanka [162]
I think the answer is C. (a.k.a the third one)
I hoped this helped !!
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3 years ago
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Klio2033 [76]

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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

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

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

average speed = 53 1/3 km/h

3 0
3 years ago
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tankabanditka [31]

I think your answer is the second one

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4 0
3 years ago
What is the value of x in a 45-45-90 triangle and the hypotenuse is 4?
Temka [501]

9514 1404 393

Answer:

  x = 2√2 ≈ 2.83

Step-by-step explanation:

The side length of an isosceles right triangle is 1/√2 times the hypotenuse length. If x is the side length, then ...

  x = 4/√2 = 4(√2)/2

  x = 2√2 ≈ 2.83

__

You have not specified the form of the answer. Sometimes an exact answer (2√2) is required. Sometimes the answer is required to be rounded to tenths or hundredths.

3 0
3 years ago
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