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Igoryamba
3 years ago
11

X+4x+6x=? please explain in detail

Mathematics
1 answer:
Stolb23 [73]3 years ago
6 0
X+4x+6x= 

All of the variables are x so you don't have to do anything

6x+4x=10x

there is still one x left 
x = 1

10x+x = 11x


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(Anderson, 1.14) Assume that P(A) = 0.4 and P(B) = 0.7. Making no further assumptions on A and B, show that P(A ∩ B) satisfies 0
Goshia [24]

Answer with Step-by-step explanation:

We are given that

P(A)=0.4 and P(B)=0.7

We know that

P(A)+P(B)+P(A\cap B)=P(A\cup B)

We know that

Maximum value of P(A\cup B)=1 and minimum value of P(A\cup B)=0

0\leq P(A\cup B )\leq 1

0\leq P(A)+P(B)-P(A\cap B)\leq 1

0\leq 0.4+0.7-P(A\cap B)\leq 1

0\leq 1.1-P(A\cap B)\leq 1

0\leq 1.1-P(A\cap B)

P(A\cap B)\leq 1.1

It is not possible that P(A\cap B) is equal to 1.1

1.1-P(A\cap B)\leq 1

-P(A\cap B)\leq 1-1.1=-0.1

Multiply by (-1) on both sides

P(A\cap B)\geq 0.1

Again, P(A\cup B)\geq P(B)

0.4+0.7-P(A\cap B)\geq 0.7

1.1-P(A\cap B)\geq 0.7

-P(A\cap B)\geq -1.1+0.7=-0.4

Multiply by (-1) on both sides

P(A\cap B)\leq 0.4

Hence, 0.1\leq P(A\cap B)\leq 0.4

3 0
3 years ago
PLEASE HELP ME!! I WILL MARK THE FIRST CORRECT ANSWER BEAINLIEST!!))
sergey [27]

Answer:

7598.80

Step-by-step explanation:

V=πr^2h

= 3.14 * 11^2 * 20

= 2420π or 7598.80

6 0
2 years ago
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SpyIntel [72]

Answer:

Step-by-step explanation:

E) 5=y

F) x=1.3

G) n=5

H) 5=f

Hope this helps

8 0
3 years ago
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Z varies directly as x and y, z = 6 when x=2 and y = 6. Find the value of z when x = 3 and y = 8
Monica [59]

Answer:

12

Step-by-step explanation:

 This is a joint variation problem:

              z varies directly as x and y

Interpreting this;

                z ∝ xy

 Therefore;

               z  = kxy

 z = 6, x = 2, y  = 6

   Now find k,

             6  = 2 x 6 x k

              6  = 12k

               k  = \frac{1}{2}

To find the value of z;

   x  = 3, y  = 8

              z  =  \frac{1}{2}  x 3 x 8  = 12

3 0
3 years ago
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marin [14]

Answer:

5x^2(2x-7)

Step-by-step explanation:

Hope this helps!

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3 years ago
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