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Ann [662]
3 years ago
5

Solve the equation. 2n – 5 = 7 12 9 1 6 Please help

Mathematics
2 answers:
gavmur [86]3 years ago
6 0
2n - 5 = 7
Add 5 to both sides.
-5 + 5 = 0
7 + 5 = 12
2n = 12
Divide both sides by 2.
2n / 2 = n
12 / 2 = 6
n = 6.

Your answer is 6.
I hope this helps!
ohaa [14]3 years ago
6 0
 the answer you are looking for is 6
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oee [108]

Answer:

slope = 5

Step-by-step explanation:

Parallel lines have the same slope

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So, slope m = 5

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3 years ago
I really need help ASAP PLEASEEEE !!
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Troyanec [42]

Answer:

Probability of at least 50 obese individuals in our sample is 0.92364 .

Step-by-step explanation:

We are given that a random sample of 300 adults is taken from the state of Colorado, where the rate of obesity is 19.8% .

Let X = Number of obese individuals

Firstly, X ~ Binom(n=300,p=0.198)

For approximating binomial distribution into normal distribution, firstly we have to calculate \mu and \sigma^{2} .

Mean of Normal distribution, \mu = n * p = 300 * 0.198 = 59.4

Variance of Normal distribution,\sigma^{2} = n * p * (1-p) = 300 *0.198 *0.802 = 47.64

So, now X ~ N(\mu = 59.4 , \sigma^{2} = 47.64)

The standard normal z score distribution is given by;

                     Z = \frac{X-\mu}{\sigma} ~ N(0,1)

So, probability of at least 50 obese individuals in our sample = P(X >= 50)

  P(X >= 50) = P(X > 49.5)  {using continuity correction}

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Therefore, required probability is 0.92364 .

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Neporo4naja [7]

Answer:

Step-by-step explanation:

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first, we add the x's together.

4x + 60 = 180

then we see if they all have a common multiple. in this case, they do. they are all divisible by 4, so we can use that.

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then, just subtract 15 from both sides, that way we get the variable by itself.

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also, it is a right triangle. the top angle (3x) multiplied by 3 is 90. any triangle that has a 90 degree angle is automatically a right triangle.

6 0
3 years ago
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You are creating bracelets and then selling them to your friends at a 85% markup rate. If it costs you $1.80 to create the brace
posledela

Answer:

you will add $1.53 to every bracelet you make

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figure out what 85 percent of 1.80 is and then add that to 1.80 for the total price

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