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Paladinen [302]
3 years ago
11

Factor by grouping:

Mathematics
2 answers:
BARSIC [14]3 years ago
3 0
(x-y)^2=x^2-2xy+y^2\\---------------------------\\\\4-12r+9r^2=2^2-2\cdot2\cdot3r+(3r)^2=(2-3r)^2

other\ method:\\\\4-12r+9r^2=4-6r-6r+9r^2=2(2-3r)-3r(2-3r)\\\\=(2-3r)(2-3r)=(2-3r)^2
faust18 [17]3 years ago
3 0
Because:
(a-b)^2=a^2+2ab+b^2
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Alonzo's suitcase can weigh no more than 20 kilograms if he wants to take it on the airplane without paying a fee. His suitcase
Olegator [25]

Given: Alonzo's suitcase can weigh no more than 20 kilograms if he wants to take it on the airplane without paying a fee.

Let x denote the weight of suitcase, then

We know that 1 kg =10 hg

Therefore, 20kg=

⇒

Since, the weight of his suitcase is 220 hg.

The amount of weight will Alanzo have to take out of his suitcase to meet the weight limit will be :-

Hence, 20 hg of weight have to take out of his suitcase to meet the weight limit.

8 0
3 years ago
If $5,000 is borrowed with an interest of 12.3% compounded semi-annually, what is the total amount of money needed to pay it bac
jarptica [38.1K]

Answer:

$7153.03

Step-by-step explanation:

To find the total amount after 3 years, we can use the formula for compound tax:

P = Po * (1+r/n)^(t*n)

where P is the final value, Po is the inicial value, r is the rate, t is the amount of time and n depends on how the tax is compounded (in this case, it is semi-annually, so n = 2)

For our problem, we have that Po = 5000, r = 12.3% = 0.123, t = 3 years and n = 2, then we can calculate P:

P = 5000 * (1 + 0.123/2)^(3*2)

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3 0
3 years ago
1. what is the product of 3/4 and - 6/7?
kari74 [83]
Multiplying fractions: multiply numerators and multiply denominators

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8 0
3 years ago
A=5/6(B+C) SOLVE FOR C
Shalnov [3]

A = 5/6(B + C)

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divide 5 from both sides

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subtract B from both sides

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3 0
3 years ago
What is the area of the vertics 1,1 1,4 4,4 4,1
Annette [7]

Answer: 3x-x+2=4


Step-by-step explanation:


4 0
3 years ago
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