3 years ago

Please help!

Mathematics

2 answers:

ch4aika [34]3 years ago

5 0

Answer:

Step-by-step explanation:

andreyandreev [35.5K]3 years ago

4 0

Answer:

The correct answer is C

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. Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local train, whose average speed

madreJ [45]

Answer:

Fast train speed: 69 km/h

Slow train speed: 39 km/h

Step-by-step explanation:

Fast train:

-Time: 4.33

-Speed: x

-Distance: 4.33x

Slow train:

-Time: 7.66

-Speed: x - 30

-Distance: 7.66(x - 30)

7.66(x - 30) = 4.33x

7.66x - 229.8 = 4.33x

3.33x = 229.8

x = 69

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Answer:

(12, -3)

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

What's is the absolute value -18 degrees?

dalvyx [7]

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3 years ago

Read 2 more answers

Evaluate the exponent expression 3x–4 ⋅ xy2 for x = –1 and y = 2.

ddd [48]

Answer:

Step-by-step explanation:

Given,

x = - 1

y = 2

To find : The value of 3x - 4 ⋅ xy² ?

Substitute the given values of x and y in the expression 3x - 4 ⋅ xy².

3x - 4 ⋅ xy²

= 3 ( - 1 ) - 4 ⋅ ( - 1 ) ( 2 )²

= - 3 - 4 ⋅ - 1 ( 4 )

= - 12 ⋅ - 4

= 48

Note : -

When a negative number gets multiplied with a negative, the resulted number is a positive number.

8 0

2 years ago