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Andreas93 [3]
3 years ago
6

The cafeteria sold 6 more turkey sandwiches than ham sandwiches. They sold 16 sandwiches in all. How many ham sandwiches did the

cafeteria sell?
Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
6 0

Answer:

5

Step-by-step explanation:

11 and 5 have a 6 number gap between them 5 plus 11 gets you 16

Lelu [443]3 years ago
4 0

Answer:

5 ham sandwiches

Step-by-step explanation:

To find the number of ham sandwiches sold, we should find the pair of numbers that have a difference of 6 and add to 16.

  • 1 ham sandwich, 7 turkey sandwiches = 8 sandwiches
  • 2 ham sandwiches, 8 turkey sandwiches = 10 sandwiches
  • 3 ham sandwiches, 9 turkey sandwiches = 12 sandwiches
  • 4 ham sandwiches, 10 turkey sandwiches = 14 sandwiches
  • 5 ham sandwiches, 11 turkey sandwiches = 16 sandwiches

While this method isn't always very efficient, it worked pretty well for this case!

Therefore, the answer is 5 ham sandwiches.

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Step-by-step explanation:

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x = 18/2

x=9

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6 0
3 years ago
Given u( – 5) = -5, u'( – 5) = 2, U( – 5) = 6, v'( – 5) = 4, find w'( – 5).
Aleonysh [2.5K]

(a) <em>w(x)</em> = 5<em>u(x)</em> + 8<em>v(x)</em>

Differentiating with the sum rule gives

<em>w'(x)</em> = 5<em>u'(x)</em> + 8<em>v'(x)</em>

so that

<em>w'</em> (-5) = 5<em>u'</em> (-5) + 8<em>v'</em> (-5)

… = 5×2 + 8×4 = 42

(b) <em>w(x)</em> = <em>u(x)</em> <em>v(x)</em>

Differentiate using the product rule:

<em>w'(x)</em> = <em>u'(x)</em> <em>v(x)</em> + <em>u(x) v'(x)</em>

Then

<em>w'</em> (-5) = <em>u'</em> (-5) <em>v</em> (-5) + <em>u</em> (-5) <em>v'</em> (-5)

… = 2×6 + (-5)×4 = -8

(c) <em>w(x)</em> = <em>u(x)</em> / <em>v(x)</em>

Quotient rule:

<em>w'(x)</em> = (<em>u'(x) v(x)</em> - <em>u(x) v'(x) </em>) / <em>v(x)</em> ²

Then

<em>w'</em> (-5) = (<em>u' </em>(-5)<em> v </em>(-5) - <em>u </em>(-5)<em> v' </em>(-5)<em> </em>) / <em>v </em>(-5)²

… = (2×6 - (-5)×4) / 6² = 32/36 = 8/9

(d) <em>w(x)</em> = <em>u(x)</em> / (<em>u(x)</em> + <em>v(x) </em>)

Chain and quotient rule:

<em>w'(x)</em> = (<em>u'(x)</em> (<em>u(x)</em> + <em>v(x)</em>) - <em>u(x)</em> (<em>u(x)</em> + <em>v(x)</em>)<em>' </em>) / (<em>u(x)</em> + <em>v(x) </em>)²

… = (<em>u'(x)</em> (<em>u(x)</em> + <em>v(x)</em>) - <em>u(x)</em> (<em>u'(x)</em> + <em>v'(x)</em>)) / (<em>u(x)</em> + <em>v(x) </em>)²

Then

<em>w'</em> (-5) = (<em>u' </em>(-5) (<em>u </em>(-5) + <em>v </em>(-5)) - <em>u </em>(-5) (<em>u' </em>(-5) + <em>v' </em>(-5))) / (<em>u </em>(-5) + <em>v </em>(-5)<em> </em>)²

… = (2×((-5) + 6) - (-5)×(2 + 4)) / ((-5) + 6)²

… = (2×1 + 5×6) / 1² = 32

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