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2 years ago

Factor. 4x^2 - 20xy + 25y^2

Mathematics

1 answer:

miss Akunina [59]2 years ago

5 0

Answer:

(2x-5y)^2

Step-by-step explanation:

4x^2 - 20xy + 25y^2=

(2x) ^2 - 2(2x)(5y)+(5y)^2 =(*)

(2x-5y)^2

(*) A^2 - 2AB+B^2 =(A-B)^2

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Find the missing side lengths. Can someone please help???

adoni [48]

Answer:

x = 16

y = 13.8

Step-by-step explanation:

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2 years ago

Find the 141th derivative of the function f(x) = cos(x) The answer is function is:

Kaylis [27]

Answer:

-0.777145961

Step-by-step explanation:

cos(141)=-0.777145961

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2 years ago

The inches of rainfall in the rainforest is represented by the function f(x) = 3(x-2)+ 4. What is the average rate of change bet

nata0808 [166]

Answer:

The average rate of change of rainfall in the rainforest between 2nd year and 6th year = 3 inches

Step-by-step explanation:

Given function representing inches of rainfall:

$f(x)=3(x-2)+4$

To find the average rate of change between the 2nd year and the 6th year.

Solution:

The average rate of change between interval $[a,b]$ is given as :

$\frac{f(b)-f(a)}{b-a}$

For the given function we need to find the average rate of change between 2nd year and 6th year. $[2,6]$

So, we have:

$f(2)=3(2-2)+4=3(0)+4=4$

$f(6)=3(6-2)+4=3(4)+4=12+4=16$

Thus, average rate of change will be:

$\frac{f(6)-f(2)}{6-2}$

⇒ $\frac{16-4}{6-2}$

⇒ $\frac{12}{4}$

⇒ $3$

Thus, the average rate of change of rainfall in the rainforest between 2nd year and 6th year = 3 inches

8 0

3 years ago

K+5/3=-7/4 (those are fractions) also can you show your work?

iris [78.8K]

Answer:

-3 5/12=k

Step-by-step explanation:

K+5/3= -7/4

subtract 5/3 from both sides

K= -7/4-5/3

lcm of 4 and 3 is 12

K= -21/12-20/12

K= -41/12

K= -3 5/12

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2 years ago

A coin weighs about 14" pounds. Find the weight of 1000 of the coins. Round your answer to

user100 [1]

Answer:

I'm sorry I would help you I don't understand the second sentence.

Step-by-step explanation:

5 0

3 years ago