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Lady bird [3.3K]
3 years ago
15

Please Please Please Help Me On These 2 Math Questions!!!!! I GIVE THANKS!!!!

Mathematics
1 answer:
Mars2501 [29]3 years ago
3 0
A. After the mod. One wall is “x” longer than original (horizontal in diagram) and the other is “x” shorter (vertical)
(30+x)(30-x)

b. He original area = 30 x 30 = 900 sq. ft.
The mod. Area is (30+6)(30-6) = 36x24= 764 sq. ft.

So the room was largest to begin with when it was a square
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4 x 1 + 1 x 1/100 + 9 x 1/1000 in standard form
uysha [10]

Answer:

4.1

Step-by-step explanation:

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3 years ago
How do you do series with an n
SOVA2 [1]
The problem can be solved step by step, if we know certain basic rules of summation.  Following rules assume summation limits are identical.
\sum{a+b}=\sum{a}+\sum{b}
\sum{kx}=k\sum{x}
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\sum_{r=1}^n{r}=n(n+1)/2

Armed with the above rules, we can split up the summation into simple terms:
\sum_{r=1}^n{40r-21n+8}=n
=40\sum_{r=1}^n{r}-21n\sum_{r=1}^n{1}+8\sum_{r=1}^n{1}
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=28n-n^2

=> (a) f(x)=28n-n^2
=> f'(x)=28-2n 
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Since f''(x)=-2 <0  therefore f(14) is a maximum
(b) f(x) is a maximum when n=14

(c) the maximum value of f(x) is f(14)=196
4 0
3 years ago
PLEASE HELP ASAP ILL GIVE BRAINLIST TO THE CORRECT ANSWER!!
Marta_Voda [28]

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D

Step-by-step explanation:

she refuses to pay because the owners of the place shes living is supposed to fix damage and they have not done so she refuses to pay the rent.

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How many four-digit numbers can be created using the digits 0-9? Note: A number cannot be repeated for different digits.
Svetradugi [14.3K]
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If f(x) = 3x + 10x and g(x) = 4x – 2, find (f + g)(x).
katrin [286]

Answer:

a is answer correct i think

Step-by-step explanation:

7 0
3 years ago
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