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Alex17521 [72]
3 years ago
7

Solve 2/3 divided by 4/5 a.6/15 b.6/8 c.8/15 d.5/6

Mathematics
2 answers:
Bumek [7]3 years ago
6 0

Answer:

d.5/6

Step-by-step explanation:

2/3÷4/5

2/3×5/4

5/6

vladimir1956 [14]3 years ago
6 0

Answer:

2/3÷ 4/5 is 5/6

.

Step-by-step explanation:

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Use the formula to evaluate the series 1/4 + 1/9 + 1/27 + 1/81.
Dmitriy789 [7]
Is the first term supposed to be 1/4, or did you actually mean 1/3?

I'll assume the latter. Write

S=\dfrac13+\dfrac19+\dfrac1{27}+\dfrac1{81}
S=\dfrac13+\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}
\dfrac13S=\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}+\dfrac1{3^5}
\implies S-\dfrac13S=\dfrac13-\dfrac1{3^5}
\dfrac23S=\dfrac13\left(1-\dfrac1{3^4}\right)
S=\dfrac12\left(1-\dfrac1{81}\right)
S=\dfrac{40}{81}
8 0
3 years ago
A rectangular garden is 80 feet long and 50 feet wide. It has a walkway along its diagonal. How long is the walkway? 62.4 feet 9
viktelen [127]
94 feet. 50^2 + 80^2 = x^2
8 0
3 years ago
10 points 8' 5" − 3' 10"
crimeas [40]

Answer:

- 4 cot ( - 45 )

cos ( 390 )

sin ( 330 )

8 0
3 years ago
how do you solve this problem to find the measure of the angle indicated in bold? thank you pls answer!
Mnenie [13.5K]

Answer: 85 degrees

Step-by-step explanation: 20x+5+24x-1=180

                                                         44x+4=180

                                                           -4         -4

                                                              44x=176

               division property of equality  x=4

20(4)+5=

80+5=  85 degrees

5 0
3 years ago
Prove the following relations: <br>1) (1 - cos²A) (1 + tan²A) = tan²A​
liberstina [14]

Step-by-step explanation:

(1 - cos²A) (1 + tan²A) = tan²A

(sin²A)(sec²A) = tan²A

(sin²A)(1/cos²A) = tan²A

(sin²A)/(cos²A) = tan²A

tan²A = tan²A → <u>Proved</u>

4 0
3 years ago
Read 2 more answers
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