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irina1246 [14]
3 years ago
7

4b + 11 + 8b + 1 = 180

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
6 0

Answer:

b=14

Step-by-step explanation:

Add 4b and 8b, which you get 12b. Then you add 11 and 1 which you get 12.

12b + 12 = 180 is the next equation.

Afterwards, you subtract 12 from 180.

12b = 168

Divide 12b from 168.

b = 14

tamaranim1 [39]3 years ago
5 0

Find for B?

Mk in this equation

4b + 11 + 8b + 1 = 180

Subtract 11 and 1 from both sides

4b + 8b = 168

Combine unknowns

12b = 168

Find b by dividing by 12

Thus, B = 14

Hope this helps,

Jeron

P.S, if you found this really helpful, consider marking brainliest, (you don't have to btw)

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Answer:

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Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given equation  

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Differentiating equation (i) with respective to 'x' , we get

             \frac{dy}{dx} = -2( 2x) +5(1) =  -4x +5

Equating zero

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⇒          x = \frac{5}{4}

<em> The rocket hit the ground at     </em>x = \frac{5}{4}<em></em>

<u><em>Step(ii):</em></u>-

    \frac{dy}{dx}  =  -4x +5  ...(ii)

Again differentiating equation (ii) with respective to 'x' , we get

 \frac{d^{2} y}{dx^{2} }  = - 4(1)

The maximum height at x = \frac{-5}{4}

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 y = -2 (\frac{5}{4})^{2}  + 5 (\frac{5}{4} )  + 7

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<em>The maximum height of the rocket = 12.468 feet</em>

       

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Step-by-step explanation:

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