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Jobisdone [24]
3 years ago
12

Which of the following polygons has five lines of symmetry?

Mathematics
1 answer:
Ivan3 years ago
6 0
Pentagons are and example.
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Find the measure of angle 1
kolbaska11 [484]

Answer:

44°

Step-by-step explanation:

8x - 4 = 6x + 8 (This is because they are corresponding angles)

8x - 6x = 8 + 4

2x = 12

x = 12 ÷ 2

x = 6

6x + 8 = angle 1 (Vertically opposite angles are equal)

Substitute the value of x in the equation '6x +8' to get the size of the angle.

6 × 6 + 8

36 + 8 = 44°

Angle 1  =  44°

3 0
2 years ago
Incomes in a certain town are strongly right-skewed with mean $36,000 and standard deviation $7000. a random sample of 75 househ
Svet_ta [14]
Since the sample is greater than 10, we can approximate this binomial problem with a normal distribution.

First, calculate the z-score:

z = (x - μ) / σ = (37000 - 36000) / 7000 = 0.143

The probability P(x > 37000$) = 1 - P(<span>x < 37000$), 
therefore we need to look up at a normal distribution table in order to find 
P(z < 0.143) = 0.55567 
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Hence, there is a 44.4% probability that </span><span>the sample mean is greater than $37,000.</span>

4 0
3 years ago
State the postulate or theorem that proves that x is parallel to y
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Converse of the alternate interior angles theorem states the postulate or theorem that proves that x is parallel to y.
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Use an inequality symbol (&lt;,&gt;,&gt;=)to compare -26_____54
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< because a negative is less than a positive
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What phrase describes the algebraic expression r over 9
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R divided by 9 is the answer.
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