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Answer: Both angles are equal to 45 degrees</h3>
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Explanation:
When using the SSS congruence rule, we can prove that triangle DCA is congruent to triangle BCA.
Since the triangles are congruent, the corresponding pieces angle DCA and angle BCA are equal in measure (if they weren't, then the triangles wouldn't be congruent).
Recall that any square has four right angles, ie all angles are 90 degrees each. Angle DCB is cut in half to get 90/2 = 45.
The angles DCA and DCB are 45 degrees each.
Answer:
2-packs of candy bars for 0.38 is better to buy
Step-by-step explanation:
Answer:
Step-by-step explanation:
reflect over x- axis
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Answer:
Critical value is 1.318 and the confidence interval is 29.357 to 33.042
Step-by-step explanation:
n = 25
x = 31.2
s = 6.99
Degree of freedom = n-1= 25-1 =24
Confidence level = 0.8
So, α = 1- 0.8= 0.2
t critical =
Formula of confidence interval : to
Confidence interval : to
Confidence interval : to
Hence critical value is 1.318 and the confidence interval is 29.357 to 33.042
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