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2 years ago

63° 13° Choose the equation that best describes the image

Mathematics

1 answer:

Romashka [77]2 years ago

7 0

Answer:

63degrees

Step-by-step explanation:

I cant see the picture well but i assume that is an angle and it is right before 90 degrees

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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:-

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

8 0

2 years ago

(1) Area: 35 y² +13y-12

Fiesta28 [93]

Answer:

35y2+13y−12

=35y2+28y−15y−12

=7y(5y+4)−3(5y+4)

=(7y−3)(5y+4)

Therefore, the possible length and breadth are 7y-3 units and 5y+4 units

6 0

1 year ago

Solve the equation: 14w=91 Please and thank you!!

avanturin [10]

You divide 91/14 to get w=6.5.

5 0

3 years ago

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L Factor the greatest common factor (GCF) from each polynomial. 10n^3 - 35n^2+25n

Maru [420]

Answer:

5n(2n^2-7n+5)

Step-by-step explanation:

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2 years ago

Write the inequality for x that is shown on this line. Can you answer these 3 questions:

dexar [7]

Answer: a) x < 3

b) 3, 4, 5, 6

c) x > 6

Step-by-step explanation:

First you need to understand the symbols:

< means less than (represented by an open dot, left arrow)

≤ means less than or equal to (represented by a closed dot, left arrow)

> means greater than (represented by an open dot, right arrow)

≥ means greater than or equal to (represented by a closed dot, right arrow)

a) We have a closed dot and a left arrow so we need to use <

We write this inequality as: x < 3

b) y is BETWEEN 2 and 6 (not including 2 but including 6)

2 3 4 5 6

c) 3x + 7 > x + 19

2x + 7 > 19 subtracted x from both sides

2x > 12 subtracted 7 from both sides

x > 6 divided both sides by 2

3 0

2 years ago

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