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ICE Princess25 [194]
3 years ago
11

Is x = 6 a solution to the equation 5(x – 3) = x + 13?

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

Answer:

x=6 is not a solution

Step-by-step explanation:

We can substitute 6 as x to find out:

5(6-3)=6+13

first, because of PEMDAS we'll do 6-3

5(3)=6+13

multiply 5 by 3 and add 6 and 13

15=19

Since the statement is not true, that means that x=6 is not a solution

Hope this helps!

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(b) Only one of the sets can contain all five correct answers. If you are guessing, so that you are as likely to choose one sequ
shepuryov [24]

Solution :

Given that there is only one set which can contain all the five correct answers. While guessing that I am likely to choose only one sequence of the answers as another, then the probability of getting all the five answers correct  is given by :

Given : X \sim binomial $\left( 5 , \frac{1}{3} \right)$

P (X = 5)

$= \ ^5C_5\left({\frac{1}{3}\right)^5\left(\frac{2}{3}\right)^0$

= 0.00412

Thus the probability is 0.00412

8 0
3 years ago
Pls help with this question!
barxatty [35]
The answer is a. you can see this because 1/3+1/3 gives you 2/3 and 1+1 gives you 2. when you add these two numbers together, it gives you mikayla’s total number of miles at 2 2/3.
3 0
3 years ago
Read 2 more answers
Solve for 8x+c=k <br> Solve for X
ryzh [129]

Answer:

x=1

Step-by-step explanation: x will always be one unless the value of x is given for example, x wouldnt be one if in the question it says x=10 or x=9 or any number other than one

7 0
2 years ago
Solve the system of equation
nikdorinn [45]

Answer:

So the Point of intersection is (-4,-2)

Which is option A

Step-by-step explanation:

The given system of equations is

-0.1x - 0.8y = 2              ...................(i)

0.6x - 0.5y = -1.4           ...................(ii)

Let us take equation (i) and use method of substitution for solving it

the equation (i) is

-0.1 x - 0.8y = 2

Adding 0.8y on both sides

-0.1 x + 0.8 y - 0.8 y = 2 + 0.8 y

-0.1 x = 2 + 0.8 y

Dividing both sides -0.1

\frac{-0.1 x}{-0.1}=\frac{0.8 y}{-0.1}+\frac{2}{-0.1}

x = -8 y - 20                     ..........................(iii)

Now we will use this value and put it into equation (ii) to find the value of y

Equation (ii) is

0.6 x - 0.5 y = -1.4

Put value of x

0.6(-8 y - 20) - 0.5 y =-1.4

It becomes

-4.8 y - 12 - 0.5 y = -1.4

adding 12 on both sides

-4.8 y - 0.5 y - 12 + 12 = -1.4 + 12

it becomes by solving

-5.3 y = 10.6

Dividing both sides by -5.3

\frac{-5.3*y}{-5.3}=\frac{10.6}{-5.3}

So

y = -2

Now we have the value of y putting it in equation (iii)

Equation (iii) is

x = -8 y - 20    

Putting value of y

x = -8*(-2) - 20

x = 16-20

x=-4

So the Point of intersection is (-4,-2)

7 0
3 years ago
Match each description when z = 9 + 3i.
VladimirAG [237]
Real part of z = 9
Imaginary Part = 3i
Conjugate of z is 9 - 3i

7 0
3 years ago
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