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CaHeK987 [17]
3 years ago
9

Find the area of each complex figure.

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0
I don’t see the area
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What is the first term of the geometric sequence presented in the table below?
Leto [7]
Fron the table given:

A3 = 112,
A8 = - 3,584

An = A1 *r ^ (n-1)

=> A3 = A1 (r^2) = 112

A8 = A1(r^7) = - 3,584

=> - 3584 / 112 = (r^7) / (r^2)

=> (r^5) = - 32

=> r = - 2

=> A1 (- 2)^2 = 112

=> A1 = 112 / 4 = 28

Answer: a1 = 28
8 0
3 years ago
A) 60° B) 85° C) 96° D) 40°​
RideAnS [48]

Answer:

A)60°

Step-by-step explanation:

a straight line is 180° then

if a line bisect it in to a half it become 90°

then

the exterior angle of a triangle is equal to the sum of two interior angles

this means 150°-90°=60°

8 0
3 years ago
Read 2 more answers
What is the vale of ■ in this equation?<br>7×9=(7×10)-(7×■)
aliina [53]
The answer is 1 because 7*9 is 63
7*10=70 70-7=63
5 0
3 years ago
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Type the correct answer in each box. Use numerals instead of words. Based on the Pythagorean theorem, find the missing length fo
Neporo4naja [7]

Answer: See below

Step-by-step explanation:

The Pythagorean Theorem is a²+b²=c². Since each problem gives us the length of a, b, or c, we can directly plug them into this equation and solve.

Triangle EFG

9²+b²=41²

81+b²=1681

b²=1600

b=√1600

b=40

----------------------------------------------------------------------

Triangle PQR

20²+21²=c²

400+441=c²

c²=841

c=√841

c=29

----------------------------------------------------------------------

Triangle XYZ

a²+24²=25²

a²+576=625

a²=49

a=√49

a=7

6 0
3 years ago
Roger can make 3 bird houses in 5 hours. Which proportion could be used to determine how many bird houses Roger could build in 2
Nadya [2.5K]

Answer:

the answer should be 12

Step-by-step explanation:

6 0
3 years ago
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