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erastova [34]
3 years ago
8

A, O and B lie on a straight line segment.

Mathematics
2 answers:
Helga [31]3 years ago
6 0
180 is the degrees a straight line segment is. This means that
4x + 3x + 2x = 180.
Since these all have the same variable (x), then you can add the coefficients. (4,3,2)
9x = 180
180/9 = x

X = 20

Dafna1 [17]3 years ago
6 0

Answer:

The value of x is 20°

Step-by-step explanation:

Here, For a given Straight Line

We know that, The Straight angle is an angle equal to 180°

So,

4x + 3x + 2x = 180°

9x = 180°

Divide by 9 from both side

9x/9 = 180°/9

x = 20°

Thus, The value of x is 20°

<h3><u>FOR</u><u> </u><u>VERIFICATION</u><u> </u><u>ONLY</u><u>:</u></h3>

<u>4x + 3x + 2x = 180°</u>

9x = 180°

95(20°) = 180°

180° = 180°

Hence, L.H.S = R.H.S

<u>-TheUnknownScientist</u>

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3 years ago
Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate:_________.
andreyandreev [35.5K]

Answer:

B. z Subscript alpha divided by 2 zα/2 = 1.96.

Step-by-step explanation:

We are given that we want to construct a confidence interval. For this, the summary statistics for randomly selected weights of newborn​ girls:

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As we can clearly see here that the population standard deviation is unknown and the sample size is also very large.

It has been stated that when the population standard deviation is unknown, we should use t-distribution but since the sample size is very large so we can use z distribution also as it is stated that at very large samples; the t-distribution corresponds to the z-distribution.

Here, \alpha = level of significance = 1 - 0.95 = 0.05 or 5%

         \frac{\alpha}{2}=\frac{0.05}{2} = 0.025 or 2.5%

So, the value of Z_(_\frac{\alpha}{2} _) in the z table is given as 1.96 with a 2.5% level of significance.

3 0
3 years ago
Which equation is equivalent to the equation 5X+30=45?
nika2105 [10]

Answer:

its probably 45-30=5x

6 0
3 years ago
Pls help I will give you brainiest
tekilochka [14]
What do you need help with?
4 0
2 years ago
5th grade math. correct answer will be marked brainliest
kipiarov [429]
The correct answer is 67 ur welcome
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3 years ago
Read 2 more answers
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