All categories

2 years ago

What's the property of equality of r- 20 = 30

Mathematics

2 answers:

Harman [31]2 years ago

7 0

Addition Property: For all real numbers x,y, and z , if x=y , then x+z=y+z .

eflexive Property: For all real numbers x , x=x . A number equals itself.

Subtraction Property: For all real numbers x,y, and z , if x=y , then x−z=y−z .

so its subtraction property

galina1969 [7]2 years ago

3 0

Answer:

r= 10

Step-by-step explanation:

30 - 20 = 10

You might be interested in

A race car travels 3.6 hours at an average speed of 205.7 miles per hour. How far does the car travel? Include unit of measureme

noname [10]

Answer:

The car traveled 740.52 miles

Step-by-step explanation:

The only thing you need to do in this problem is to multiply the hours by the rate (mph).

3.6 × 205.7 = 740.52

5 0

3 years ago

Can you work these out? 0.6x100 0.15x100 3.7x100 0.8x100 0.07x100

Monica [59]

Step-by-step explanation:

$0.6 \times 100 = 60 \\ 0.15 \times 100 = 15 \\ 3.7 \times 100 = 370 \\ 0.8 \times 100 = 80 \\ 0.07 \times 100 = 7$

6 0

3 years ago

A. A mother dolphin is 150.25 meters below sea level. Her calf is 45 meters below sea level.

soldi70 [24.7K]

Answer:

Idk

Step-by-step explanation:

8 0

3 years ago

In a certain computer, the probability of a memory failure is 0.01, while the probability of a hard disk failure is 0.02. If the

ratelena [41]

Answer:

We need to remember that we have independent events when a given event is not affected by previous events, and we can verify if two events are independnet with the following equation:

$P(A \cap B) = P(A) *P(B)$

For this case we have that:

$P(A) *P(B) = 0.01*0.02= 0.0002$

And we see that $0.0002 \neq P(A \cap B)$

So then we can conclude that the two events given are not independent and have a relationship or dependence.

Step-by-step explanation:

For this case we can define the following events:

A= In a certain computer a memory failure

B= In a certain computer a hard disk failure

We have the probability for the two events given on this case:

$P(A) = 0.01 , P(B) = 0.02$

We also know the probability that the memory and the hard drive fail simultaneously given by:

$P(A \cap B) = 0.0014$

And we want to check if the two events are independent.

We need to remember that we have independent events when a given event is not affected by previous events, and we can verify if two events are independnet with the following equation:

$P(A \cap B) = P(A) *P(B)$

For this case we have that:

$P(A) *P(B) = 0.01*0.02= 0.0002$

And we see that $0.0002 \neq P(A \cap B)$

So then we can conclude that the two events given are not independent and have a relationship or dependence.

8 0

3 years ago

I need help solving 10gallons = miles

Rzqust [24]

Answer:

50?

Step-by-step explanation:

Because its 50 miles per gallon, so gallon time 50 will be the miles? I'm not sure but i think it is

6 0

2 years ago