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Jobisdone [24]
3 years ago
8

Which equation would best represent the situation below using only width as the unknown?

Mathematics
1 answer:
tiny-mole [99]3 years ago
7 0
2(w+60) + 2w= 520

perimeter of a rectangle = 2(length)+2(width)
length=w+60ft
width=w
perimeter=520ft
520ft=2(w+60)+2w
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NEED HELP ASAP Find the value of x. Round to the nearest tenths place. ​
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Answer:

x = 77.8 ft

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Trigonometry</u>

  • sin∅ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

∅ = 40°

opposite leg of angle = 50 ft

hypotenuse = x ft

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute:                                        sin40° = 50/x
  2. Multiply <em>x </em>on both sides:                 xsin40° = 50
  3. Divide sin40° on both sides:           x = 50/sin40°
  4. Evaluate:                                           x = 77.7862
  5. Round:                                              x = 77.8 ft
6 0
3 years ago
Seth buys last year's best-selling novel, in hardcover, for $17.85 $⁢17.85 . This is with a 15% 15% discount from the original p
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$21.00

let the original price = 100%

then the discount price = 100 - 15 = 85%

divide $17.85 by 85 to obtain 1% then multiply by 100 to obtain original price.

original price = $17.85 × \frac{100}{85} = $21


8 0
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5 0
2 years ago
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yan [13]
Avg. speed Joanna runs: 7.5km/h
how much she runs everyday: 15km

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She leaves at 8:30, comes back at ?
8:30+ 2:00= 10:30

Joanna arrives back at 10:30a.m.
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3 years ago
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Amanda walked 2.5 miles to the post office and another 1.6 miles to the park then she walked home following the same route how f
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2.5+2.5+1.6+1.6= 8.2 miles

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