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galben [10]
3 years ago
5

Find the value of x.

Mathematics
1 answer:
galina1969 [7]3 years ago
8 0

Answer:

x=15

Step-by-step explanation:

So we know 4x plus 8x gets a total of 180 degrees (since a straight line is 180 degrees). Combine 4x and 8x to get 12x. To find x, divide 12 from 180. 180/12 is 15.

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Margarita [4]

Answer:

(2x + 3)(x - 2)

Step-by-step explanation:

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5 0
2 years ago
I am a 3-digit odd number that has a 3 in the hundreds place, is divisible by 7, but is not divisible by 5, and has no ones or s
qaws [65]
One of the numbers is 399.
It is an odd number that has neither a 1 or a seven, is not divisible by 5 and has a three in the hundreds place.

Another number is 329 which meets all of the requirements. 7 goes into it 47 times

The last number is 343. Seven goes into it 49 times.

Hope this Helps!
3 0
3 years ago
A missing data value from a set of data has a z-score of –2.1. fred already calculated the mean and standard deviation to be mu
Flauer [41]

The missing data value according to the given z-score is <u>39</u>.

We can determine how distant a data point is from the mean using its z-score. It is a crucial subject in statistics. Z-scores are a way to compare data to a population that is considered "normal." When attempting to compare someone's weight to that of the "average" person, for instance, it might be intimidating to look at a large table of data even though we know they weigh 70 kg. A z-score offers us an indication of how that person's weight compares to the mean weight of the general population. We shall discover what the z score is in this post.

The z score is a measurement of how many standard deviations a raw score is below or above the population mean. If the value is higher than the mean, it will be positive; if it is lower, it will be negative. The standard score is another name for it. It shows how far away from the mean an object is, in terms of standard deviations. The mean and population standard deviation must be known to apply a z-score. The likelihood of a score happening inside a typical normal distribution may be calculated with the use of a z score. We may also compare two scores from other samples thanks to it. A z score table is a table that contains the values of, which represent the cumulative distribution function of the normal distribution.

The equation is given by z = (x – μ)/ σ.

μ = mean

σ = standard deviation

x = test value.

In the question, z = -2.1, μ = 43, and σ = 2.

Substituting the values, we get:

-2.1 = (x - 43)/2,

or, x - 43 = -2.1*2,

or, x = -4.2 + 43,

or, x = 38.8 ≈ 39.

Thus, the missing data value according to the given z-score is <u>39</u>.

Learn more about z-scores at

brainly.com/question/10679480

#SPJ4

6 0
1 year ago
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