2. A doctor treated 2000 patients over a period of time. If he worked for 5 hours a day and spent 15 minutes on each patient how many days did the doctor spend to treat all patients?
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Answer:

I will help

Step-by-step explanation:

Answer:

1/18

Step-by-step explanation:

Probability of getting a number higher than 4=1/3

Probability of getting 2=1/6

Probability of rolling a number higher than 4 and then a 2=(1/3)*(1/6)=1/18

A system of equations only has a unique solution if all the equations are linearly independent (this means that we have two or more equations representing the same curve).

Here we have the system:

a*x + 2*y + 4*z = b

2*x + y + 3*z = a + 1

5*x - 2*y + (a + 1)*z = 3

Now we want to show that if a = -5 or a = 2, then the system does not have a unique solution.

To see this, we can just replace a by these values and see that the equations are not linearly independent.

for a = 2 we get:

2*x + 2*y + 4*z = b

2*x + y + 3*z = 2 + 1

5*x - 2*y + (2 + 1)*z = 3

Simplifying this:

2*x + 2*y + 4*z = b

2*x + y + 3*z = 3

5*x - 2*y + 3*z = 3

From the second and third equation we can write:

2*x + y + 3*z = 3 = 5*x - 2*y + 3*z

2*x + y + 3*z = 5*x - 2*y + 3*z

2*x + y = 5*x - 2*y

3*y = 3*x

y = x

now that we know this, we can rewrite the equations as:

4*(x + z) = b

3*(x + z) = 3

Now we can take the quotient of the two equations to get:

(4*(x + z))/3*(x + z) = (4/3) = b/3

b = 4

Then the equations become:

4*(x + z) = 4

3*(x + z) = 3

Here we can divide te above one by 4 and the below one by 3 to get:

(x + z) = 1

(x + z) = 1

So both equations represent the same line, thus, the system does not have a unique solution.

Now for a = -5:

-5*x + 2*y + 4*z = b

2*x + y + 3*z = -5 + 1

5*x - 2*y + (-5 + 1)*z = 3

Simplify it:

-5*x + 2*y + 4*z = b

2*x + y + 3*z = -4

5*x - 2*y  - 4*z = 3

Now we can rewrite the first equation as:

-5*x +2*y - b = -4*z

and the third one as:

-4*z = 3 - 5*x + 2*y

Then we can write:

-5*x +2*y - b = -4*z = 3 - 5*x + 2*y

-5*x +2*y - b = 3 - 5*x + 2*y

Now we can remove the -5*x in both sides to get:

+2*y - b = 3 + 2*y

Now we can remove the 2*y in both sides to get:

-b = 3

b = -3

Replacing this in our system we get:

-5*x + 2*y + 4*z = -3

2*x + y + 3*z = -4

5*x - 2*y  -4*z = 3

Now we can multiply the first equation by -1:

-1*(-5*x + 2*y + 4*z)= -1*(-3)

5*x - 2*y - 4*z = 3

This is the same as the third equation, so here we can see that the first and third equations represent the same line, thus, the system of equations does not have a unique solution.

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Answer:

B and C

Step-by-step explanation:

A is a non terminating number which means it isn't rational. B and C are both rational and adding 1/2 to them won't change that, since they are terminating numbers. D is not a number.

Answer:

12+1/2 (0.5 as a decimal)

Step-by-step explanation:

π +0.5 will give an irrational number.

0.314 is rational

12 is a counting number.

And 4.35889894... is an irrational number.

An irrational number plus a rational one equals an irrational number.

Hope it helps! Please mark Brainliest! :-)

Answer:

6.25 or 6 2/8 or 6 R2

Step-by-step explanation:

Step-by-step explanation:

the answer is in the graph above

Answer:

3  + 2 = 5

                          Thank You

Step-by-step explanation:

Additive inverse are numbers with the same number but different signs. For example, 1 and -1 are additive inverse.

An additive inverse and it original number add to zero.

For example,

[tex]1 + ( - 1) = 0[/tex]

Using this info, w is -0.8

0.8 and -0.8 are equidistant from 0.

-0.8 is 2 mark to the right of -1.

So this means that 0.8 is 2 mark to left of 1.

Answer: I dont know

Step-by-step explanation:

Answer:

x= -y+1

y=2x+z−1

z=−x−2y+ 8 /3

Step-by-step explanation:

I honestly entered it into a algebra calculator which gave me the steps.

Answer:

The segment CD is a diameter . It is 15 cm long.

Answer:

1936

Step-by-step

[tex][15 - (1 - 6 + 21 + \sqrt{9} )] ^{2}[/tex]

use BIDMAS

(1 - 6 + 21 + [tex]\sqrt{9}[/tex]) = (1 - 6 + 21 + 3) = (1 - 30) = -29

[15 - -29] = [15 + 29] because two minuses together make a plus

[tex]44^{2}[/tex] = 1936

Answer:

g

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

10-((-3) + -6)-10

10-(-9)-10

10+9-10

9

Answer:

948,762

Step-by-step explanation:

The greatest six digit number would have to start with 9. It is given that the four is in the ten thousand place. Since no number can be repeated. I put the next largest number to 9 in the thousands place which is 8. I then put 7 then 6.  Since the number has to be even I put 2 since 8, 6 and 4 were already used.

The greatest 6 digit even numbers with 4 in the ten thousand place and all digits different is 948,762.

An even number is an integer that can be divided by two and remain an integer or has no remainder.

Now it is given that,

greatest 6 digit even numbers with 4 in the ten thousand place and all digits different

So, the greatest will be starting from 9

Digit at the ten thousand place is fix, 4

Digit at the thousand place is 8

Digit at the hundred place is 7

Digit at the ten place is 6

Since, it is an even number then it must be divisible by 2.

So, last digit at ones is 2

Thus we get, 948,762

hence, the greatest 6 digit even numbers with 4 in the ten thousand place and all digits different is 948,762.

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Answer:19

Step-by-step explanation:

3x3=9 then add by 10 giving u the sum of 19

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Answer:

x = 35

Step-by-step explanation:

Co interior angle sum to 180° , so

x + 30 + 3x + 10 = 180 , that is

4x + 40 = 180 ( subtract 40 from both sides )

4x = 140 ( divide both sides by 4 )

x = 35

Answer:

8×18=144

4±15=19

144÷19

7.579 answer

Answer:

hope it's helps you.......

Answer: 120 m/min or 2 m/s

Concept:

Here, we need to know how to calculate velocity.

Velocity = ΔD / ΔT

The SI unit of velocity is m/s

Solve:

Given information

Distance = 1200 m

Time = 10 min

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 10

Velocity = 120 m/min

Extra:

**Disclaimer** Ignore this part if it is irrelevant to what you are learning.

If the question needs an answer with SI unit, then please see below:

Given information

Distance = 1200 m

Time = 10 min = 10 × 60 = 600 sec

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 600

Velocity = 2 m/s

Hope this helps!! :)

Please let me know if you have any questions

Gross income is: The total amount of earned salary or wages. Option C is the correct answer.

Gross income refers to the total amount of money earned by an individual before any deductions or taxes are taken out. It represents the complete earnings from employment or other sources of income before any adjustments or deductions are made.

Gross income includes the full amount of salary or wages earned by an individual, as well as any additional income such as bonuses, commissions, or tips.

Option A is incorrect because gross income is the total amount earned before tax and benefit deductions are applied.

Option B is incorrect because gross income is not after tax, but rather before any tax deductions.

Option D is incorrect because gross income does not specifically refer to the amount withheld for taxes, but rather the total amount earned before any deductions.

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Answer:

f(2) = 11

Step-by-step explanation:

Plug 2 in for x

3(2) + 5

6 + 5

= 11

Answer:

given

n=9

a=1

d=3-1=2

Step-by-step explanation:

now , by formula,

sn = n/2(2a+(n-1)d)

= 9/2(2×1+(9-1)×2)

=9/2×18

=81

Answer:

22

Step-by-step explanation:

9514 1404 393

Answer:

  1 +i√3.5

Step-by-step explanation:

In vertex form, the equation is ...

  2(x² -2x +1) +7 = 0

  2(x -1)² +7 = 0

Then the solutions are ...

  (x -1)² = -7/2

  x = 1 ±i√3.5

One solution is 1+i√3.5.

Answer:  1.125 miles

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

i think

Answer:

[tex]4( \frac{1}{2} + \frac{3}{4} ) - 2 \\ = 4( \frac{2 + 3}{4} ) - 2 \\ = 4( \frac{5}{4}) - 2 \\ = 5 - 2 \\ = 3[/tex]

Answer:

a one is right answer

Step-by-step explanation:

h.j.j.k kaoa0