Please answer the equation in the attachment.

Mathematics

1 answer:

MariettaO [177]3 years ago

7 0

Answer:

the missing value is 9.33.

Step-by-step explanation:

given,

length (l) = 3x+2

breadth (b) = 4

perimeter(P) = 68 cm

now,

P = 2(l+b)

or, 68 = 2× ( 3x+2+4)

or, 68 = 2× ( 3x+ 6)

or, 68 = 6x+12

or, 68 - 12= 6x

or, 56 = 6x

or, 6x = 56

or, x = 56/6

or, x = 9.33

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The following is the frequency distribution for the speeds in miles per hour (mph) of a sample of 35 automobiles traveling on an

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Answer:

The answer is "70.38".

Step-by-step explanation:

Given:

$Speed\ \ (mph) \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Cumulative \ \ Frequency\\\\50-54\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 2\\\\55-59\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 6\\\\60-64\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 11\\\\65-69\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 21\\\\70-74 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 30\\\\75-79 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 35\\\\$

solution:

$Interval \ \ \ \ \ \ \ X\ \ \ \ \ \ \ F \ \ \ \ \ \ \ fX\\\\$

$50-54 \ \ \ \ \ \ \ 52 \ \ \ \ \ \ \ 2 \ \ \ \ \ \ \ \ \ 104 \\\\55-59 \ \ \ \ \ \ \ 57 \ \ \ \ \ \ \ 6\ \ \ \ \ \ \ \ \ 342 \\\\60-64 \ \ \ \ \ \ \ 62 \ \ \ \ \ \ \ 11 \ \ \ \ \ \ \ \ 682 \\\\65-69\ \ \ \ \ \ \ 67 \ \ \ \ \ \ \ 21\ \ \ \ \ \ \ 1407 \\\\70-74\ \ \ \ \ \ \ 72 \ \ \ \ \ \ \ 30 \ \ \ \ \ \ \ 2160\\\\75-79 \ \ \ \ \ \ \ 77 \ \ \ \ \ \ \ 35\ \ \ \ \ \ \ 2695 \\\\$