3 years ago

Please helpppp !!!!!!!!!!!! Will Mark Brianliest !!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Alexxx [7]3 years ago

7 0

Answer:

Step-by-step explanation:

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A line has a slope of -6. Which of the following could describe two points on the line?

MrRa [10]

Answer:

A is the answer just did the quiz

5 0

2 years ago

If y = 3x^3 - 2x and dx/dt equals 3, find dy/dt when x = -2. Give only the numerical answer. For example, if dy, dt = 4, type on

Nadya [2.5K]

Answer:

$\frac{dy}{dt} = 102$

Step-by-step explanation:

step(i)

Given function y = 3 x³ - 2 x ... (i)

Differentiating equation (i) with respective to 'x'

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

Given x = -2

$(\frac{dy}{dx} ) x_{=-2} = 3 (3 (-2)^{2} ) - 2(1)$

$(\frac{dy}{dx} ) x_{=-2} = 36 -2 =34$

Step(ii):-

we know that

$\frac{dy}{dx} = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

Given $\frac{dx}{dt} = 3 and \frac{dy}{dx} = 34$

$\frac{dy}{dx} = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

substitute values $\frac{dx}{dt} = 3 and \frac{dy}{dx} = 34$

⇒ $34 = \frac{\frac{dy}{dt} }{3 }$

cross multiplication , we get

$\frac{dy}{dt} = 34( 3 ) = 102$

Final answer:-

$\frac{dy}{dt} = 34( 3 ) = 102$

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3 years ago

Find the maximum value of y = -2(x - 4)2 - 6.

pashok25 [27]

Answer:

-2(-2)

Step-by-step explanation:

-2(x--4)2

-2(-4x)2

different sign subtract

-2(-2)

Hope this helps :D

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3 years ago

There are 6 groups of 3 people waiting to go on the underground ride. Each car can take 4 people. how many cars do you need?

Sliva [168]

6 groups of 3 6 times 3 which equals 18
and 18 divided by 4 is 4.5 so it takes 5 cars.

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3 years ago

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Mrs.sipp has 4.6 l of lemonade to serve her son's birthday guests. About how many millimeters should she pour into each glass?

vlabodo [156]

1 litre = 1000 ml
4.6 litre = 4600 ml

4600 / people = how much she should pour into each glass

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3 years ago