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adoni [48]
3 years ago
9

What is the answer for -4x+4y=12 3x-4y=-18

Mathematics
1 answer:
Liula [17]3 years ago
6 0
Use elimination.

-x = -6
X = 6

-4 (6) + 4y = 12
Y = 9

(X,y)

(6,9) is the solution
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A rectangle has sides measuring (2x + 7) units and (5x + 9) units. Part A: What is the expression that represents the area of th
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Answer:

Part A:  

(2x+7)(5x+9)

=(2x+7)(5x+9)

=(2x)(5x)+(2x)(9)+(7)(5x)+(7)(9)

=10x2+18x+35x+63

=10x2+53x+63

A)

The formula for determining the area of a rectangle is given as

Area = length × width

Given that the length and width are (2x + 6) units and (5x + 3) units, the expression for the area is

(2x + 6)(5x + 3) = 10x² + 6x + 30x + 18

Area = 10x² + 36x + 18

B)

The degree is 2 because the highest power of the terms is 2. It is classified as a trinomial because it has 3 terms.

C) it is closed under multiplication. the exponents in the polynomials are whole numbers(2 and 1). The whole numbers are closed under addition, which means that the new exponents formed are also whole numbers. The exponents were whole numbers before multiplication and doesn't change after multiplication.

Step-by-step explanation:

3 0
3 years ago
Suppose A and B are independent events. If P(A)=0.2 and P(B)=0.6, what is P(A^B)?
lawyer [7]
OK so you want the probabilty of A and B occurring.  Independet event probabilities are multiplied so its 0.2 * 0.6 = 0.12

b
3 0
3 years ago
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What is 3x+4y=8 in slope intercept form?
Tpy6a [65]
Y=3/4x+2 cus u subtract than divide
3 0
3 years ago
How to show my work for2+[4+(5x6)]
Setler [38]

Step-by-step explanation:

2+[4+(5*6)]

2+[4+30]

2+34

36

7 0
2 years ago
At the building site there are 16 pallets with sacks of cement the total weight of all the pallets and cement is 4856 pounds eac
inysia [295]
The first thing we must do for this case is to define a variable.
 We have then:
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 We then have the following equation:
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 Clearing x we have:
 x = (4856) / (16)
 x = 303.5 punds
 Answer:
 
each pallet with cement weigh:
 
x = 303.5 punds
6 0
3 years ago
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