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3 years ago

Can someone please prove that the expression (x-y)+(y-z)+(z-x) is equivalent to 0

Mathematics

1 answer:

ELEN [110]3 years ago

5 0

Answer:

see below

Step-by-step explanation:

$(x-y)+(y-z)+(z-x)\\\\=x-y+y-z+z-x\\\\=(x-x)+(-y+y)+(-z+z)\\\\=0+0+0\\\\=0$

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The delivery person weighs 150lb and each box of books weigh 40lb the maximum capacity of the elevator is 1020lb how many box of

padilas [110]

Answer:

21 box of books can be brought up by the delivery person at one time

Step-by-step explanation:

Here, we want to know the number of box of books that the delivery person could bring up at one time.

Let the number of boxes be x , so the total mass of the boxes that could come up at a time will be x * 40 = 40x lb

Let’s add this to the mass of the delivery person = 150 lb

So the total mass going inside the lift would be 150 + 40x

So we have to equate this to the maximum capacity of the lift;

150 + 40x = 1020

40x = 1020 - 150

40x = 870

x = 870/40

x = 21.75

Now since we cannot have fractional boxes, the number of boxes that could come into the lift without exceeding the maximum capacity of the lift is 21

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3 years ago

What is continuous function

sesenic [268]

Answer:

A function is continuous when its graph is a single unbroken curve ... ... that you could draw without lifting your pen from the paper. That is not a formal definition, but it helps you understand the idea.

Step-by-step explanation:

hope this helps ya

6 0

3 years ago

What does the solution to an equation with one solution look like?

mihalych1998 [28]

I believe it's b. Hope this helps

3 0

3 years ago

Is the square root of 65 rational or irrational?

wlad13 [49]

Step-by-step explanation:

$\sqrt{65}$

As it can't be expressed in the form p/q, where q is not equal to 0,

Hence,

square root 65 is an irrational 

3 0

2 years ago

Find the solution of the system of equations 2x-4y=32 2x-8y=48

Sveta_85 [38]

2x-4y=32
2x-8y=48
--------------subtract
4y = - 16
y = -4

2x-4y=32
2x- 4(-4)=32
2x + 16 = 32
2x = 16
x = 8

answer
(8, -4)

6 0

3 years ago

Read 2 more answers