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3 years ago

6+8x/2 = 5x what is x?

Mathematics

2 answers:

gulaghasi [49]3 years ago

8 0

X = 6

<span>6+8x/2 = 30 if x = 6 and 5x = 30 if x =6</span>

shusha [124]3 years ago

3 0

Answer:

x=3

Step-by-step explanation:

6+8x/2=5x

6+8x/2*2=5x*2

6+8x=10x

6+8x-8x=10x-8x

6=2x

6/2=2x/2

3=x

Also I took the test so I know this is right

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14. -9(2.7 -1.55) + 33<br> what is the answer

Andreas93 [3]

Answer:

25.15

Step-by-step explanation:

2.7 - 1.55= 1.15 + 33= 34.15 - 9= 25.15

8 0

3 years ago

Please answer correctly math problemo

MrMuchimi

Answer:

Step-by-step explanation:

We have to substitute x with 2 and y with 4

when the sign of a operation is not expressed it means that the operation is a

multiplication

So we have

3*2 + 2*(4)^2

6 + 2*(16)

6 + 32

4 0

3 years ago

Infinite over E n=1 4(0.5)^n-1

yan [13]

Answer:

S = 8

Step-by-step explanation:

An infinite geometric series is defined as limit of partial sum of geometric sequences. Therefore, to find the infinite sum, we have to find the partial sum first then input limit approaches infinity.

However, fortunately, the infinite geometric series has already set up for you. It’s got the formula for itself which is:

$\displaystyle \large{\lim_{n\to \infty} S_n = \dfrac{a_1}{1-r}}$

We can also write in summation notation rather S-term as:

$\displaystyle \large{\sum_{n=1}^\infty a_1r^{n-1} = \dfrac{a_1}{1-r}}$

Keep in mind that these only work for when |r| < 1 or else it will diverge.

Also, how fortunately, the given summation fits the formula pattern so we do not have to do anything but simply apply the formula in.

$\displaystyle \large{\sum_{n=1}^\infty 4(0.5)^{n-1} = \dfrac{4}{1-0.5}}\\\\\displaystyle \large{\sum_{n=1}^\infty 4(0.5)^{n-1} = \dfrac{4}{0.5}}\\\\\displaystyle \large{\sum_{n=1}^\infty 4(0.5)^{n-1} = 8}$