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sleet_krkn [62]
3 years ago
8

​ Quadrilateral ABCD ​ is inscribed in this circle. What is the measure of ∠A ? Enter your answer in the box.

Mathematics
2 answers:
kotykmax [81]3 years ago
3 0
Subtract 43 from 180 as the sum of a triangle adds up to 180 degrees.

180 - 43 = 137

:)
sasho [114]3 years ago
3 0

Answer: The answer is 137°.

Step-by-step explanation: Given that the quadrilateral ABCD is inscribed in a circle, where measure of angle C is 43°. We are to find the measure of ∠A.

Since the quadrilateral ABCD is inscribed in a circle, so it will be a cyclic quadrilateral. Also, the sum of opposite angles of a cyclic quadrilateral is 180°.

Therefore, we have

\angle A+\angle C=180^\circ\\\\\Rightarrow \angle A+43^\circ=180^\circ\\\\\Rightarrow \angle A=180^\circ-43^\circ\\\\\Rightarrow \angle A=137^\circ.

Thus, the required answer is 137°.

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The automaker of your new car recommends an oil change following the first 5,000 miles and then every 3,000 miles thereafter. If
Jlenok [28]

To determine how many oil changes you will need the first year, you can calculate the number of miles driven the first year and then use that to determine how many groups of 3000 miles you will drive after the first 5000 miles.


1. 52 x 250 = 13000 miles

2. 13000 miles - 5000 miles (1 oil change) = 8000 miles

3. 8000 miles - 3000 miles (1 oil change) - 3000 miles (1 oil change) = 2000 miles


The first year, you will need 3 oil changes.

7 0
3 years ago
Please help me! Thank you!
stepladder [879]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Write a rule for a function with a parabolic graph that contains the x-intercepts (-20,0) and (40,0) and a maximum point whose y
lakkis [162]

Step-by-step explanation:

Since the x-intercepts are -20 and 40, the line of symmetry is x = (-20 + 40)/2 = 10.

Now we have y = a(x - 10)² + 30, where a is an unknown constant. We can find a by using an x-intercept point.

=> (0) = a[(40) - 10]² + 30

=> 900a + 30 = 0, a = -1/30.

Hence the rule is y = -(x - 10)²/30 + 30.

7 0
3 years ago
10 pts
Simora [160]
Area = pi * radius^2
radius = diameter/2 = 26/2 = 13 feet

Area = 3.14 * (13^2)
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4 0
3 years ago
Jena has a rope that is 4 1/4 inches long. If she divides the rope into sections that are exactly 1/4 inch in length, how many 1
Vinvika [58]

Answer:

Hey there!

There are four 1/4 inch long sections in 1 inch. Thus, in four inches there would be 16 of those sections.

16+1=17

Thus, in 4 1/4 inches of rope, there are 17 sections of 1/4 inches.

Hope this helps :)

8 0
4 years ago
Read 2 more answers
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