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vesna_86 [32]
3 years ago
15

PLEASE HEKP ME ITS DUE IN 10 MINUTES FIND THE MEASUREMENT OF B AND SHOW YOU WORK PLEASE.

Mathematics
1 answer:
Snezhnost [94]3 years ago
5 0

Answer:

b=105

Step-by-step explanation:

x=35

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If f is a differentiable function, find an expression for the derivative of each of the following functions
almond37 [142]

12a. Answer:  d) x⁶ f'(x) + 6x⁵ f(x)

<u>Step-by-step explanation:</u>

Use the multiplication formula for derivatives:

y = a · b       →     y' = a'b + ab'

<u>y = x⁶ · f(x)     </u>  

a = x⁶          b = f(x)

a' = 6x⁵       b' = f'(x)

<u>y' = a'b + ab'</u>

y' = 6x⁵ f(x) + x⁶ f'(x)

***************************************************************

12b. Answer:  \bold{b)\ y=\dfrac{xf'(x)-9f(x)}{x^{10}}'}

<u>Step-by-step explanation:</u>

Use the division formula for derivatives:

y=\dfrac{a}{b}       →     y' = \dfrac{a'b - ab'}{b^2}

y=\dfrac{f(x)}{x^9}\\\\a=f(x)\qquad b=x^9\\\\a'=f(x)\qquad b'=9x^8\\\\y'=\dfrac{a'b-ab'}{b^2}\\\\y'=\dfrac{x^9f'(x)-9x^8f(x)}{(x^9)^2}\\\\.\ =\dfrac{x^9f'(x)-9x^8f(x)}{x^{18}}\\\\\text{factor out }x^{8}: y'=\dfrac{xf'(x)-9f(x)}{x^{10}}

Note: You can also move the denominator to the top (it will have a negative exponent) and use the multiplication formula for derivatives.

5 0
3 years ago
Solve the equation for x. 10x= 120​
Dominik [7]

Answer:

x = 12

Step-by-step explanation:

10x = 120                 original equation

10x/10 = 120/10       divide both sides by 10

x = 12                       simplify

Check work:

10(12) = 120

120 = 120 (true)

6 0
3 years ago
Read 2 more answers
To solve one-step equations, we do the inverse (opposite) of whatever operation is being performed on the variable, so we get th
olganol [36]

Answer:

y = 2

Step-by-step explanation:

Given

5 + y = 7

Required

Solve

From the analysis attached to the question, we can solve this equation by subtracting 5 from both sides:

5 + y = 7

-5 + 5 + y = 7 - 5

0 + y = 2

y = 2

3 0
3 years ago
What is the volume ?
Lesechka [4]
Square A: 

Length = 13 inches

Height = 2 inches

Volume: 23 inches
-----------------------------
Square B:

Length = 5 inches

Height = 2 inches

<span>Volume: 10 inches
</span>
23 x 10 = <span>230 inches
</span>
VOLUME: 230 inches
7 0
3 years ago
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A 4ft pole casts a shadow 6ft long. At the same time a wall casts a shadow 18ft. long. How tall is the wall?
ololo11 [35]

Answer:

12 ft

Step-by-step explanation:

Write and solve an equation of ratios:

 6 ft        4 ft

-------- = --------

 18 ft        w

Cross multiplying, we get:  6w = 72 ft^2, so w = 12 ft

4 0
3 years ago
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