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Vinil7 [7]
3 years ago
5

the cost of two sound systems were decreased by 10 the orginal cost of the systems were 90 dollars and 60 dollars which had a gr

eater percent of decrease
Mathematics
1 answer:
Alex Ar [27]3 years ago
3 0
I would say 60 cause 10% of 90 is 9 which is a difference of 81 while 10% of 60 is 6 which is a difference of 54. 
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Find two integers whose sum is -3 and product is -18
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let two integers be x and y

A.T.Q

x+y= -3

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and xy= -18

or,(-3-y)y= -18[by(i)]

or,- -3y-y²= -18

or,-y²= -18+3

or, -y²= -15

or, y²=15

therefore y=✓15

from (i)

x= -3-✓15

y=√15

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On Monday, you were able to spell two of your spelling words correctly. On Tuesday, you were able to spell four of your spelling
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Answer: 2^5

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3 years ago
17. Find the missing angle(s).<br> soto<br> \b<br> Omg pls hurry I need help
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The following are the number of sales which a sample of 9 car salespeople of an insurance company in Florida and a sample of 8 s
Montano1993 [528]

Answer:

There is no difference in the number of sales between The Florida salespeople and Washington salespeople

Sp^2 = 39

Step-by-step explanation:

Given data :

Florida: 39, 44, 42, 50, 55, 48, 51, 38, 54

Washington: 42, 43, 56, 50, 49, 52, 53, 56

number of sales persons in Florida = 9

number of sales persons in Washington = 8

variance = constant

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H1 : u1 ≠ u2

x ( mean ) = 46.77,  y ( mean ) = 50.13 ,

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therefore :

Sp^2 = \frac{n1s1^2 + n2s2^2}{n1 + n2-2} =  38.96  ≈ 39

performing test statistic

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5 0
3 years ago
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