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2 years ago

Z varies jointly with x, and y, and z=7 when x= 2, y= 2 pleasee I need an answer now!!

Mathematics

2 answers:

Elina [12.6K]2 years ago

5 0

Answer:

(7/4)(2)(2)=7

Step-by-step explanation:

Sergio [31]2 years ago

5 0

Answer:

z = 1.75xy

Step-by-step explanation:

Given z varies jointly as x and y then the equation relating them is

z = kxy ← k is the constant of variation

To find k use the condition z = 7 when x = 2 and y = 2, then

7 = k × 2 × 2 = 4k ( divide both sides by 4 )

1.75 = k

z = 1.75xy ← equation of variation

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Pls help DUE TODAY (13points)

Brut [27]

Answer:

42 ft²

Step-by-step explanation:

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2 years ago

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AysviL [449]

79 ft/s = 0.0240792 km/s

0.0240792 x 60 = 1.444752 km/minute
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2 years ago

how many days will it take a 14 year old boy to clean up trash for 12.5 hours at a low temperature of 47 degrees and high temper

GuDViN [60]

Answer:

It will take half of a day

Step-by-step explanation:

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3 years ago

Of 560 marbles in a bag, 65% are red and the rest are blue. After 28 red marbles are replaced with blue ones, how many blue marb

jonny [76]

Answer: The answer is 400 blue marbles.

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and number of blue marbles is

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Now, if 28 red marbles are replaced by blue marbles, the the new number of red and blue marbles will be

$n_r^\prime=364-28=336~~~\textup{and}~~~n_b^\prime=196+28=224.$

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3 years ago

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kondor19780726 [428]

Answer:

Step-by-step explanation:

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3 years ago