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oksano4ka [1.4K]
2 years ago
5

Help math math math

Mathematics
2 answers:
lutik1710 [3]2 years ago
5 0

Hello.

In order to convert this equation into slope intercept form, we need to divide the entire equation by 7:

\tt{8x-7y=13

\tt{\displaystyle\frac{8x}{7} -\frac{7y}{7}=\frac{13}{7}

Simplify:

\tt{\displaystyle\frac{8x}{7}-y=\frac{13}{7}

Add y to both sides:

\Large\boxed{\sf{y=\displaystyle\frac{8x}{7} -\frac{13}{7}}}

I hope it helps.

Have an outstanding day. :)

\boxed{imperturbability}

Setler79 [48]2 years ago
5 0

Hey there!

8x - 7y = 13

8x - 13 = 7y

(8x - 13)/ 7 = y

8x/7 - 13/7 = y

Hope it helps ya!

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A rocket is launched from a tower. The height of the rocket, y in feet, is related to the
devlian [24]

Answer:

The rocket will reach its maximum height after 6.13 seconds

Step-by-step explanation:

To find the time of the maximum height of the rocket differentiate the equation of the height with respect to the time and then equate the differentiation by 0 to find the time of the maximum height

∵ y is the height of the rocket after launch, x seconds

∵ y = -16x² + 196x + 126

- Differentiate y with respect to x

∴ y' = -16(2)x + 196

∴ y' = -32x + 196

- Equate y' by 0

∴ 0 = -32x + 196

- Add 32x to both sides

∴ 32x = 196

- Divide both sides by 32

∴ x = 6.125 seconds

- Round it to the nearest hundredth

∴ x = 6.13 seconds

∴ The rocket will reach its maximum height after 6.13 seconds

There is another solution you can find the vertex point (h , k) of the graph of the quadratic equation y = ax² + bx + c, where h = -\frac{b}{2a} and k is the value of y at x = h and k is the maximum/minimum value

∵ a = -16 , b = 196

∴ h=-\frac{196}{2(-16)}

∴ h = 6.125

∵ h is the value of x at the maximum height

∴ x = 6.125 seconds

- Round it to the nearest hundredth

∴ x = 6.13 seconds

4 0
3 years ago
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Hoochie [10]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
a motorcycle dealer paid a certain price for a motorcycle and marked it up by 1/5 of the price he paid. Later, he sold it for $1
katovenus [111]
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you need 5/5
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3 years ago
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belka [17]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
-(-6x - 5) = 4(5x + 3)
Lina20 [59]

Answer:

\large\boxed{B)\ -\dfrac{1}{2}}

Step-by-step explanation:

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8 0
3 years ago
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