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OverLord2011 [107]
3 years ago
10

What is the magnitude (size) of 3.7?

Mathematics
1 answer:
navik [9.2K]3 years ago
6 0
The answers b. |3.7| = 3.7 so the answer will be 3.7
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What is the exact value of cos(11pi/21)cos(pi/7)-sin(11pi/21)sin(pi/7)?
Anika [276]

Answer:

B

Step-by-step explanation:

-1/2

7 0
3 years ago
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Together, Aanya and Krish can wash and wax Aanya's car in 50 minutes. Alone it takes Krish ten minutes more than Aanya. To the n
Leto [7]

Answer:

95 ; 105

Step-by-step explanation:

Let :

Aanya's time = x

Krish's time = x + 10

Together = 50

Hence

Aanya's rate = 1/x

Krish's rate = 1/(x + 10)

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Hence,

1/x + 1/(x + 10) = 1 / 50

((x + 10) + x) / x(x + 10) = 1/ 50

(2x + 10)/ x² + 10x = 1/50

50(2x + 10) = x² + 10x

100x + 500 = x² + 10x

x² + 10x - 100x - 500 = 0

x² - 90x - 500 = 0

Using the quadratic equation solver :

x = 95.24 ; x = - 5.24

Time can't be negative

Hence, x = 95 (nearest minute)

It takes Aanya 95 minutes Alone a ND

Krishna (95 + 10) = 105 minutes alone

6 0
3 years ago
What is this I’m in a hurry please help :(
Nesterboy [21]
I'm pretty sure the answer is D bc it has the same coefficients and the same numbers
4 0
3 years ago
What’s the missing factors for these questions?
dem82 [27]

The answer to your question is 57.6

6 0
3 years ago
I need 6x-10 ima not too good with these
Verizon [17]

x=11

the angles are congruent so 6x-10=56

6x=66

x=11

5 0
3 years ago
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