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natita [175]
2 years ago
10

Find the value of two numbers if their sum is 12 and their difference is 4. Show work please.

Mathematics
2 answers:
Elza [17]2 years ago
6 0

Answer:

8,4

Step-by-step explanation:

x+y=12

x-y=4

(x+y)(x-y)=12*4

x^2-y^2=48

x=8 y=4

Irina18 [472]2 years ago
5 0

Answer:

4 & 8

Step-by-step explanation:

x-y = 4 -> x = 4+y

x+y = 12 = 4+y+y -> 4+2*y = 12

-> 2*y = 8 -> y = 4

-> x = 4+y = 8

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Assume that a chocolate bar consists of n squares arranged in a rectangular pattern. The entire bar, a smaller rectangularpieceo
motikmotik

Step-by-step explanation:

Claim:

it takes n - 1 number of breaks to break the bar into n separate squares for all integers n.

Basic case -> n = 1

The bar is already completely broken into pieces.

Case -> n ≥ 2

Assuming that assertion is true for all rectangular bars with fewer than n squares. Break the bar into two pieces of size k and n - k where 1 ≤ k < n

The bar  with k squares requires k − 1 breaks and the bar with n − k squares

requires n − k − 1 breaks.

So the original bar requires  1 + (k−1) + (n−k−1) breaks.

simplifying yields,

1 + k − 1 + n − k − 1

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Therefore, we proved as we claimed that it takes n - 1 breaks to break the bar into n separate squares.

8 0
3 years ago
Just a few more word problems.
ANEK [815]

Answer: 18600 feet

Step-by-step explanation:

f(t)=33600-1500t

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7 0
3 years ago
Read 2 more answers
D + 3n = 1 solve for n
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4 0
3 years ago
Read 2 more answers
PLEASE HELP WILL GIVE BRAINLY TO CORRECT ANSWER
Tatiana [17]
So to find the percent do 96 divided by 800 since 96 people will be getting the part and there is 800 people trying out
You should get 12 so 12 percent

Any questions? Just ask below
7 0
2 years ago
Where do I find my work I did with a tutor?
OlgaM077 [116]
It should come up as a notification. Check your messages or press “tutor” maybe even try reloading the page.
8 0
2 years ago
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