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2 years ago

Pls helps me ill give u brainlest !!! Solve the following equation for x.

Mathematics

2 answers:

BARSIC [14]2 years ago

4 0

Answer: C.

Step-by-step explanation: I used m.athway

Sveta_85 [38]2 years ago

3 0

Answer:

7/8

Step-by-step explanation:

see image below:)

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A poll agency reports that 75% of teenagers aged 12-17 own smartphones. A random sample of 234 teenagers is drawn. Round your an

GalinKa [24]

Answer:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

$X \sim Binom(n=234, p=0.75)$

And the mean for this case would be:

$E(X) =np = 234*0.75= 175.5$

And the standard deviation would be given by:

$\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624$

Step-by-step explanation:

If our random variable of interest for this case is X="the number of teenagers between 12-17 with smartphone" we can model the variable with this distribution:

$X \sim Binom(n=234, p=0.75)$

And the mean for this case would be:

$E(X) =np = 234*0.75= 175.5$

And the standard deviation would be given by:

$\sigma =\sqrt{np(1-p)}= \sqrt{234*0.75*(1-0.75)}= 6.624$

3 0

3 years ago

-7 + (-9) - (-11) -2

Tju [1.3M]

The answer is -7, please give brainliest.

3 0

3 years ago

Wavelength and Frequency

sp2606 [1]

Answer:

B. 3 to 2

Step-by-step explanation:

I calculated it logically

7 0

2 years ago

Solve the expresssion x − 5 = 17

CaHeK987 [17]

Answer: x = 22

Step-by-step explanation:

We must isolate the x by itself.

We need to add 5 to both sides of the equation so it cancel out from the side with x.

So x = 22

7 0

3 years ago

What are the expressions in factored form? 6x^2 + 4x 4x^2 + 11x + 6 9x^2 - 4

Alexxandr [17]

6x^2 + 4x = 2x(3x + 2)

4x^2 + 11x + 6 = (4x + 3)(x + 2)

9x^2 - 4 = (3x +2)(3x - 2)

7 0

3 years ago

Read 2 more answers