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Elodia [21]
3 years ago
11

Hiii i have a question on math:)

Mathematics
1 answer:
vlabodo [156]3 years ago
4 0
  • <em>Answer:</em>

<em>PQR = 150°</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>PQR = PQS + SQR</em>

<em>12x - 6 = 16 + 9x + 17</em>

<em>12x - 9x = 16 + 17 + 6</em>

<em>3x = 39</em>

<em>x = 13</em>

<em>PQR = (12×13 - 6)° = (156 - 6)° = 150°</em>

<em>Good luck !</em>

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20. A ball is dropped from a height of a little over 5 feet, and the height is measured at small intervals. The table below show
nekit [7.7K]

Step 1:

a) Write the quadratic model

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b = -1.24

c = 5.23

P(t)=-15.64t^2\text{ - 1.24t + 5.2}3

b) t = 0.30

\begin{gathered} P(t)=-15.64t^2\text{ - 1.24t + 5.2}3 \\ =\text{ -15.64 }\times0.3^2\text{ - 1.24}\times\text{ 0.3 + 5.2}3 \\ =\text{ -1.4076 - 0.372 + }5.23 \\ =\text{ 3.45} \end{gathered}

c) t = 0.52 seconds

\begin{gathered} p(t)=-15.64t^2\text{ - 1.23t + 5.23} \\ =\text{ -15.64}\times0.52^2\text{ - 1.23}\times0.52\text{ + 5.23} \\ =\text{ -4.23 - 0.64 + 5.23} \\ =\text{ 0.36} \end{gathered}

d) 0.30 is more likely to be relaible.

e)

\begin{gathered} p(t)\text{ = 1} \\ p(t)=-15.64t^2\text{ - 1.23t + 5.23} \\ 1=-15.64t^2\text{ - 1.23t + 5.23} \\ -15.64t^2\text{ - 1.23t + 4.23 = 0} \\ t\text{ = 0.48222} \\ \text{t = 0.48 seconds} \end{gathered}

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The perimeter of a rectangle is 150 cm. the length is 4 cm greater than the width find the width and length
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Also remember that the perimeter of a rectangle is the sum of two times the width and two times the length, or P = 2l + 2w. To solve this problem, we can substitute in the information we know, as shown below:

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