2 years ago

Need help on a systems of equations word problem

Mathematics

1 answer:

lapo4ka [179]2 years ago

8 0

Answer:

brazil: 12.8 portugal: 14.769230769230769 (you need to round it)

Step-by-step explanation:

just divide.

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Find the gradient, picture below

hoa [83]

Answer:

$\frac{dy}{dx} = \frac{13}{8}$

Step-by-step explanation:

$y = 2x + 6 {x}^{ - \frac{1}{2} } \\ \frac{dy}{dx} = 2 + 6( - \frac{1}{2}) {x}^{ - \frac{1}{2} - 1 } \\ \frac{dy}{dx} = 2 - 3 {x}^{ - \frac{3}{2} } \\ \frac{dy}{dx} = 2 - \frac{3}{ \sqrt{ {x}^{3} } }$

When x = 4,

$\frac{dy}{dx} = 2 - \frac{3}{ \sqrt{ {4}^{3} } } \\ = \frac{13}{8}$

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vladimir1956 [14]

Answer:

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3 years ago

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Darya [45]

$1+(-3)+(-7)+(-11)+(-15)+(-19)+(-23)+(-27) = \\1-3-7-11-15-19-23-27 = \\-35-19-23-27= \\-35-19-50=\boxed{-104}$

Hope this helps.

r3t40

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3 years ago

Translate the following phrase into an algebraic expression. Do not simplify. Use the variable names "x" or "y" to describe the

Rainbow [258]

Answer:

this would be 4x

Step-by-step explanation:

this is because when you carry over the dividend you have to divide it by 2 and assuming y is 8 the answer would be 4x

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3 years ago

Simplify 2(x+7) 2x + 20 - 2 = x+4 2x + 8

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Answer:

x = -20

Step-by-step explanation:

2(x+7) 2x + 20 - 2 = x+4 2x + 8

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