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Law Incorporation [45]
3 years ago
6

Why are the equations w - x x = w and w x - x = w called identities?

Mathematics
1 answer:
saveliy_v [14]3 years ago
5 0
They are called identities because:
w-x = 0 
w = x (carry x to the other side) is the same as x = w

in the other case:
wx-x = w / divide by w on both side
x -x = 0
x = x (carry x to the other side)

In both cases the equations are the same.


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There are 25 prime numbers between 1 and 100. There are 46 prime numbers between 1 and 200. Which situation is more likely? Expl
Alekssandra [29.7K]

Answer:

One.

Step-by-step explanation:

There is a 25% chance of situation one happening.

\frac{prime}{total} =\frac{25}{100} = 0.25=25%

There is a 23% chance of situation two happening.

\frac{prime}{total} =\frac{46}{200}=0.23=23%

Since the chance is two percent bigger from situation one, situation one should be the one that is more likely to happen.

8 0
3 years ago
What is the area of a rectangle with a length of 3 cm and a width of 4.5 cm?
dolphi86 [110]

Answer:

13.5

Step-by-step explanation:

What is the area of a rectangle with a length of 3 cm and a width of 4.5 cm?

1.5 cm2

6.75 cm2

7 cm2

13.5 cm2 this one

6 0
3 years ago
Please help asap! giving brainliest for those who help!!
dsp73

Answer:

I think this is right:

50:50

5/10

0.5

50%

Step-by-step explanation:

6 0
3 years ago
Sam is delivering two refrigerators that each weigh 105 kilograms there is an elevator with a weight limit of 1,00 pounds
rosijanka [135]

Question:

Sam is delivering two refrigerators that each weigh 105 kilograms. There is an

elevator with a weight limit of 1,000 pounds. Can he take both refrigerators on the

elevator in one trip? (1 kilogram 2.2 pounds)

Answer: yes he can

Step-by-step explanation:

Yes he can.

He can if the total weight of the 2 refrigerator didn't exceed the weight limit of the elevator.

Therefore:

Since 1 refrigerator weigh 105kg

2 refrigerator = 2 x 105kg = 210kg

The weight limit of the elevator 1000pounds convert to kg.

Since

2.2 pounds = 1kg

1000 pounds = 1000/2.2 kg

=454.55kg

Weight limit of the elevator = 454.55kg.

Since Weight of the 2 refrigerator is less than

weight limit of the elevator, he can take both refrigerators on the elevator in one trip

5 0
3 years ago
Help,<br> what do i put in the blanks
Vikki [24]
For saturday’s empty box it’s 35
for sunday’s empty box it’s 72
sorry if this is wrong but i hope this helps :))
4 0
3 years ago
Read 2 more answers
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