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3241004551 [841]
3 years ago
9

How to find the discriminant of

Mathematics
1 answer:
kati45 [8]3 years ago
4 0

The discriminant is 225

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Suppose sin a = 12/13 and sin b= 5/11. FInd cos(a+b)
m_a_m_a [10]

Answer:

1.28 or 912/715

Step-by-step explanation:

sine= opposite side/hypotenuse

cos=adjacent/ hypotenuse

sine a= 12/13 using the Pythagorean Theorem and solve for the missing side. (which is the adjacent side)

cos a = 5/13

Do the same for sine b

cos b= 9.8/11

add both the cosine value

(5/13)+(9.8/11)=1.28 or 912/715 in fraction form

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2 years ago
If x = -6 then -x 2 = <br> - (-6) 2 =
soldi70 [24.7K]

Answer:

12

Step-by-step explanation:

negative times a negative equals a positive.

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2 years ago
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Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 item
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The answer is B 20-6=14/2=7
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3 years ago
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Tom earned $72 walking dogs for 6 hours. How many total hours will it take tom to earn $96 in all? Solve using unit rates
slava [35]

Answer:

8 hours

Step-by-step explanation:

Step one:

Given data

Tom earned $72 walking dogs for 6 hours

amount earned = $72

time taken = 6 hours

Required

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Step two:

let us find the unit rate of his earning

unit rate = 72/6

= 12 per hour

 

In 1 hour Tom earns $12

in x hours he will earn $96

cross multiply we have

96*1= 12x

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It takes 36 minutes for 7 people to paint 4 walls. How long does it take 9 people to paint 7 walls?
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