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zzz [600]
3 years ago
15

a can of paint will cover 20 square units my area that i want to paint has lenght of 20 inches and a width of 10 inches how many

cans of paint will i need to buy
Mathematics
2 answers:
tigry1 [53]3 years ago
7 0
You need to buy 10 cans of paint
Usimov [2.4K]3 years ago
5 0
You need to buy 8 cans of paint and shut up is a bad word
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5 ÷ 1/2 => 5 x 2/1 => 10/1 => 10

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Step-by-step explanation:

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Mike had 119 dollars to spend on 6 books. after buying them he had 11 dollars. how much did each book cost ?
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3 years ago
Write the given second order equation as its equivalent system of first order equations. u′′−5u′−4u=1.5sin(3t),u(1)=1,u′(1)=2.5
lakkis [162]

Answer:

hi your question options is not available but attached to the answer is a complete question with the question options that you seek answer to

Answer:  v = 5v + 4u + 1.5sin(3t),

  • 0
  • 1
  •  4
  • 5
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  • 1.5sin(3t)
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Step-by-step explanation:

u" - 5u' - 4u = 1.5sin(3t)        where u'(1) = 2.5   u(1) = 1

v represents the "velocity function"   i.e   v = u'(t)

As v = u'(t)

<em>u' = v</em>

since <em>u' = v </em>

v' = u"

v'  = 5u' + 4u + 1.5sin(3t)   ( given that u" - 5u' - 4u = 1.5sin(3t) )

    = 5v + 4u + 1.5sin(3t)  ( noting that v = u' )

so v' = 5v + 4u + 1.5sin(3t)

d/dt \left[\begin{array}{ccc}u&\\v&\\\end{array}\right]= \left[\begin{array}{ccc}0&1&\\4&5&\\\end{array}\right]  \left[\begin{array}{ccc}u&\\v&\\\end{array}\right] + \left[\begin{array}{ccc}0&\\1.5sin(3t)&\\\end{array}\right]

Given that u(1) = 1 and u'(1) = 2.5

since v = u'

v(1) = 2.5

note: the initial value for the vector valued function is given as

\left[\begin{array}{ccc}u(1)&\\v(1)\\\end{array}\right]  = \left[\begin{array}{ccc}1\\2.5\\\end{array}\right]

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3 years ago
What is a fraction less than 5\6 and has a denominator of 8
White raven [17]
5/8. Is less than. 5/6 .
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