2 years ago

PLEASE HELP 50 POINTS!!

Mathematics

2 answers:

viva [34]2 years ago

8 0

Child what-:::::::::::::::::

sergij07 [2.7K]2 years ago

3 0

Answer:

This is not even 50 points?

Step-by-step explanation:

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if the wheel of the engine of a train is 30/7m in circumference and makes 7 revolutions in 4 secs then the speed of the train is

Nastasia [14]

I dont know ans dont care but iill try its 2 and lima bean

6 0

3 years ago

In a un ceremony, 25 diplomats were introduced to each other. suppose that the diplomats shook hands with each other exactly onc

saw5 [17]

The question is asking 'how many different ways can we pair two diplomats to shake hand'?

The combination formula is given by: $\frac{n!}{(n-r)!r!}$

We have n = 25 and r = 2

Substituting into the formula we have

$\frac{25!}{(25-2)!2!} =300$ handshakes

7 0

3 years ago

Tim wants to ride his bike for 25 miles or less on some mountain bike trails.

bekas [8.4K]

Answer:

Eagle Ridge 2 Times

Black Bear 1 time and Doe Run 2 Times

Eagle Ridge 1 time and Doe Run 1 time

B,D,E

Step-by-step explanation:

Took a test 100%

5 0

2 years ago

The coordinate (1,3) is a solution to 2x-3y=-7<br><br> True <br><br> False

Natalija [7]

True because just plug in (1,3) for x and y and solve it out.
Plugging it in gives you 2(1)-3(3)=-7 which simplifies to 2-9=-7, which is true.

5 0

3 years ago

Let f(x) = -4x + 7

Tema [17]

g(x) = 2x-6

f(x) = -4x +7

(g•f)(x) = g(f(x))

= 2(f(x)) - 6

= 2 ( -4x+7) -6

= -8x + 14 -6

= -8x +8

now

(g•f)(1) = -8(1) + 8= -8+8

= 0

so option a is answer

4 0

3 years ago