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olga_2 [115]
3 years ago
10

9. Mohammed copied this problem into his notebook.

Mathematics
1 answer:
Mkey [24]3 years ago
8 0

Answer:

Its B

Step-by-step explanation:

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The 10th term of an a.p is -27 and the 5th term is -12 .find the first term?​
horsena [70]

Step-by-step explanation:

a_{10} = - 27... (Given) \\\\\therefore a + 9d = - 27...... (1)\\\\a_{5} = - 12... (Given) \\\\\therefore a + 4d = - 12.......(2)\\\\

Subtracting equation (2) from equation (1)

a + 9d-( a + 4d )= - 27-(-12)\\\\\therefore a +9d - a-4d = - 27+12\\\\\therefore 5d = - 15\\\\\therefore d = \frac {- 15}{5}\\\\\huge \orange {\boxed {\therefore d = -3}} \\\\

Substituting d = - 3 in equation (1), we find:

a + 9\times (-3)= - 27\\\\\therefore a - 27 = - 27\\\\\therefore a  = 27- 27\\\\\huge \red {\boxed {\therefore a  = 0}}\\\\

Hence, first term is zero.

3 0
3 years ago
Please help!!! 20 points!!
Aleksandr-060686 [28]
The answer that you are looking for is C.

5 0
3 years ago
Suppose that a die is rolled twice. What are the possible values that the following random variables can take on:(a) the maximum
andreyandreev [35.5K]

Answer and explanation:

Given : Suppose that a die is rolled twice.

The sample space form is

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

To find : What are the possible values that the following random variables can take on

(a) The maximum value to appear in the two rolls;

The possible values are 1; 2; 3; 4; 5; 6.

b) The minimum value to appear in the two rolls;

The possible values are 1; 2; 3; 4; 5; 6.

c) The sum of the two rolls;

The possible values are 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12.

d) The value of the first roll minus the value of the second roll.

The possible values are -5; -4; -3; -2; -1; 0; 1; 2; 3; 4; 5.

5 0
3 years ago
Examine the system of equations.
SashulF [63]

Answer:

y=11

Step-by-step explanation:

Solve the system by substitution by setting the equations equal to each other.

y = 5x+6

y = x+10

It becomes 5x+6 = x+10. Solve for x using inverse operations.

5x+6 = x+10

4x+6 = 10

4x = 4

x=1

Substitute x=1 into one equation to find y.

y = x+10

y = 1 +10

y=11

6 0
3 years ago
Read 2 more answers
Is 11/12 greater than 2 1/3
dolphi86 [110]
No because 11/12 is not even a whole number, whereas 2 1/3 (ok so not a whole number but above a whole number) is.
6 0
3 years ago
Read 2 more answers
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