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nadya68 [22]
3 years ago
11

Help me answer these questions please 15, 19 and 20 please​

Mathematics
1 answer:
SpyIntel [72]3 years ago
7 0

Answer:

15) K'(t) = 5[5^(t)•In 5] - 2[3^(t)•In 3]

19) P'(w) = 2e^(w) - (1/5)[2^(w)•In 2]

20) Q'(w) = -6w^(-3) - (2/5)w^(-7/5) - ¼w^(-¾)

Step-by-step explanation:

We are to find the derivative of the questions pointed out.

15) K(t) = 5(5^(t)) - 2(3^(t))

Using implicit differentiation, we have;

K'(t) = 5[5^(t)•In 5] - 2[3^(t)•In 3]

19) P(w) = 2e^(w) - (2^(w))/5

P'(w) = 2e^(w) - (1/5)[2^(w)•In 2]

20) Q(W) = 3w^(-2) + w^(-2/5) - w^(¼)

Q'(w) = -6w^(-2 - 1) + (-2/5)w^(-2/5 - 1) - ¼w^(¼ - 1)

Q'(w) = -6w^(-3) - (2/5)w^(-7/5) - ¼w^(-¾)

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Someone please help, its for a hw assignment I have due today. What is the equation of the line through (3, 7) that is perpendic
Brilliant_brown [7]

The required equation is:

y=-\frac{6}{5}x+\frac{53}{5}

Step-by-step explanation:

Let l_1 be the line through  (-1, -2) and (5, 3)

and l_2 be the line we require which passes through (3,7)

We have to find the lope of l_1 first

m_1=\frac{y_2-y_1}{x_2-x_1}\\=\frac{3-(-2)}{5-(-1)}\\=\frac{3+2}{5+1}\\=\frac{5}{6}

we have to find the equation of line perpendicular to l1

The product of slopes of two perpendicular lines is -1

Let m_2 be the slope of l_2

Then

\frac{5}{6}*m_2=-1\\m_2=-\frac{6}{5}

The general slope-intercept form is:

y=mx+b

Putting the value of slope

y=-\frac{6}{5}x+b

To find the value of b, we will put (3,7) in the equation

7=-\frac{6}{5}(3)+b\\7=-\frac{18}{5}+b\\b=7+\frac{18}{5}\\b=\frac{35+18}{5}\\b=\frac{53}{5}

Putting the values of b and m in standard slope intercept form:

y=-\frac{6}{5}x+\frac{53}{5}

Hence,

The required equation is:

y=-\frac{6}{5}x+\frac{53}{5}

Keywords: Equation of line

Learn more about equation of line at:

  • brainly.com/question/702593
  • brainly.com/question/7128279

#LearnwithBrainly

7 0
3 years ago
-0.5- 3.5<br> also please explain how to solve it !!!
Marrrta [24]

Answer:

-4

Explanation:

sorry its hard to explain

4 0
3 years ago
I need help with number 12 please, thank you so so so so much!
OlgaM077 [116]

Answer:

J

Step-by-step explanation:

<h2>multiply 185 by 12=2220</h2><h3>you now know you need to find blank=2220</h3><h3 />
  1. F = 12(100)+12(13)
  2. G = 12(1)+12(8)+12(5)
  3. H= 12(18)+12(5)
  4. J= 12(100)+12(80)+12(5)

12*10=120

12*100=1200

12*12=144

12*13=156

12*18=216

12*5=60

12*8=96

f=1200+156=1356

g=12+96+60=168

h=216+60=276

j=1200+960+60=2220

5 0
2 years ago
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