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Inga [223]
3 years ago
15

What is the missing output?

Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0

Answer:

28

Step-by-step explanation:

3x² - 2x + 7

→ Substitute x = 3

3 × 3² - 2 × 3 + 7 ⇔ 3 × 9 - 6 + 7 ⇔ 27 - 6 + 7 ⇔ 21 + 7 ⇔ 28

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Tell whether the angels are complementary or supplementary then find x
NNADVOKAT [17]

Answer:

Supplementary angles

x = 31

Step-by-step explanation:

Since, (3x + 25)° and 2x° are straight line angles. Therefore they are supplementary angles

(3x + 25)° + 2x° =180°

(5x + 25)° = 180°

5x + 25 = 180

5x = 180 - 25

5x = 155

x = 155/5

x = 31

8 0
3 years ago
If ABCDE is translated 2 units up, what will happen to the polygon?
jeka57 [31]

Answer:

B. It will move but wont change shape or size.

Step-by-step explanation:

7 0
4 years ago
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Step-by-step explanation:

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3 years ago
Find dy/dt for the equation below.<br><br> 7x^3+2xy+3y^3=3
castortr0y [4]

dy/dt is -\frac{(21x^2+2y)\frac{dx}{dt}}{2x+9y^2}

What is differentiation?

Differentiation is a method of finding the derivative of a function. Differentiation is a process, in mathematics, where we find the instantaneous rate of change in function based on one of its variables. The most common example is the rate change of displacement with respect to time, called velocity.

We can find the dy/dx as shown below:

7x^3+2xy+3y^3=3

differentiating with respect to t.

7\frac{d(x^3)}{dt} +2\frac{d(xy)}{dt}+3\frac{y^3}{dt}=0

7\frac{3x^2dx}{dt}+2y\frac{dx}{dt}+2x\frac{dy}{dt}+3\frac{3y^2dy}{dt}=0

21\frac{x^2dx}{dt}+2y\frac{dx}{dt}+2x\frac{dy}{dt}+9\frac{y^2dy}{dt}=0

(21x^2+2y)\frac{dx}{dt}+(2x+9y^2)\frac{dy}{dt}=0

(21x^2+2y)\frac{dx}{dt}=-(2x+9y^2)\frac{dy}{dt}

-\frac{(21x^2+2y)\frac{dx}{dt}}{2x+9y^2}=\frac{dy}{dt}

\frac{dy}{dt}=-\frac{(21x^2+2y)\frac{dx}{dt}}{2x+9y^2}

Hence, dy/dt is -\frac{(21x^2+2y)\frac{dx}{dt}}{2x+9y^2}

Learn more about differentiations here:

brainly.com/question/25081524

#SPJ1

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