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MArishka [77]
2 years ago
8

What is the value of e? A 32 B 238 C 58 D 122

Mathematics
1 answer:
Romashka-Z-Leto [24]2 years ago
4 0
Answer:
C
Explanation:
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Assume that x and y are both differentiable functions of t and find the required values of dy/dt and dx/dt. xy = 4 (a) Find dy/d
kompoz [17]

Answer:

a) -0.9375

b) 1.25

Step-by-step explanation:

We are given the following in the question:

f(x,y) = 4

where x and y are both differentiable functions of t.

a)  x = 8 and dx/dt = 15

\\xy = 4\\\\y = \dfrac{4}{x}\\\\y = \dfrac{4}{8}=\dfrac{1}{2}\\\\\dfrac{d(f(x,y))}{dt} = 0\\\\x\dfrac{dy}{dt} + y\dfrac{dx}{dt} = 0\\\\8\dfrac{dy}{dt}  + \dfrac{1}{2}(15) = 0 \\\\\dfrac{dy}{dt} = \dfrac{1}{8}\times \dfrac{-15}{2}\\\\\dfrac{dy}{dt} = -\dfrac{15}{16}\\\\\dfrac{dy}{dt}=-0.9375

b) x = 1 and dy/dt = –5

xy = 4\\\\y = \dfrac{4}{x}\\\\ y= 4\\\\\dfrac{d(f(x,y))}{dt} = 0\\\\x\dfrac{dy}{dt} + y\dfrac{dx}{dt} = 0\\\\(1)(-5)  + 4\dfrac{dx}{dt} = 0 \\\\\dfrac{dx}{dt} = \dfrac{5}{4}\\\\\dfrac{dx}{dt} = 1.25

3 0
4 years ago
The ratio of destroyers to battleships in the navy is 20:15. If the total number of boats is 105, how many battleships are there
Elina [12.6K]

Answer:

45

Step-by-step explanation:

20:15 the ratio can be turned to a fraction

20/15

simplify

4/3

so now add the numerator and the denominator and get 7

then do 105/7=15

and then you do

4x15=60 (Destroyers)

3x15=45 (Battleships)

45 is your answer

7 0
3 years ago
How do I convert 22.4 kg/L to kg/mL
olya-2409 [2.1K]
You have to move the decimal

5 0
3 years ago
Write the number that makes each number sentence true
andrey2020 [161]

Answer: ummmmmmm

Step-by-step explanation: teeeeeheeee

idk

GIBE MEH A TANKS

6 0
3 years ago
Read 2 more answers
Write the number in standard form 1.872x102
UkoKoshka [18]
1.872 would be 187.2 when times by 100.
we will round it to 1.9
3.8 is 2 times,
and to be honest,
1.872 * 2 is 3.744
190.944 would be your answer if you find something similar to this.
8 0
3 years ago
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