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3 years ago

A rectangle has a length of 2x+7 and a width of 3x+8y write and simplify an expression for perimeter of that rectangle

1 answer:

6 0

The perimeter of rectangle is 2L + 2W where L is length and W is width.
Then substitute and evaluate:
2(2x + 7) + 2(3x + 8y)
4x + 14 + 6x + 16y
10x + 16y + 14

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And one US city the taxi cost is five dollars plus $.60 per mile if you are traveling from the airport there is an additional ch

GenaCL600 [577]

Let the number of miles be x.

Then, x miles cost 0.6x.

The initial fixed fee is $5, and the toll is $5.

cost = initial fixed fee + cost per mile + toll

46 = 5 + 0.6x + 5

0.6x + 10 = 46

0.6x = 36

x = 36/0.6

x = 60

You can travel 60 miles.

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3 years ago

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Correct answer gets brainialist!! Music notes are one application of using fractions in the real world. The different types of n

arsen [322]

Answer:

three quarter noted as as fraction would be 3/4

each quarter note is 1/4 of a whole note, or one beat in a measure of 4-4

so three of them would be

1/4+1/4+1/4=3/4

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3 years ago

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For f(x) =8x+11, find f(x) when x = 4.

Rufina [12.5K]

Answer:

Step-by-step explanation:

Plug x in.

8(4)+11=32+11=43

Hope I helped!

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3 years ago

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9|-3n|-3=105 solve for absolute value

Naddika [18.5K]

N=4, because 9x-3=-27, the absolute value of -27 is 27. Then you add 3 to 105 and get 108 then devide by 27 giving you 4.

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3 years ago

According to the article "Fatigue Testing of Condoms" (Polymer Testing, 2009: 567–571), "tests currently used for condoms are su

daser333 [38]

Answer:

99% Confidence interval: (1196,1973)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 20

Mean, μ = 1584

Standard Deviation, σ = 607

99% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.01} = \pm 2.86$

$1584 \pm 2.86(\dfrac{607}{\sqrt{20}} )\\\\ = 1584 \pm 388.18\\ = (1195.82 ,1972.18)\\ \approx (1196,1973)$

Thus, there is a 99% chance that it will break in approximately 1196 to 1972

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2 years ago