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Varvara68 [4.7K]
3 years ago
9

Which is the best description of the equivalency of the two expressions?

Mathematics
1 answer:
Reil [10]3 years ago
8 0

Answer:

They are equivalent expression because when x = 2, the expressions have the same value.

Step-by-step explanation:

Equivalent expressions are identified when the value of the variable can be substituted in each equation and the same result is found.  So, even though the expression may look different, when you put the same number in for the variable, you will get the same value.  You can also 'simplify' your expressions by combining like terms:

Expression 1:  5x² - 2x + 6x  - 4 + 3 = 5x² + 4x - 1

Expression 2:  6x² - x² - 6x + 10x + 6 - 7 = 5x² + 4x -1

Since both expressions are the same after simplifying, they will produce the same value when x = 2, so they are equivalent.  

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3 years ago
Ahren’s birthday, ​a,​ is less than 6 days away. Which inequality represents Ahran’s birthday? PLz help me
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4 0
3 years ago
Wha is 3/8×5/6 you will need a paper.
icang [17]
3/8 x 5/6 = 15/48 = 5/16
4 0
2 years ago
Read 2 more answers
Solve the system of equations using the substitution method.
Firdavs [7]

y = -1 + 3/8x

2x - 5y = 6

Substitute the first equation into the second equation, since y is already by itself.

2x - 5(-1 + 3/8x) = 6

2x + 5 - 15/8x = 6

2x - 15/8x = 1

16/8x - 15/8x = 1

1/8x = 1 Multiply 8 on both sides to get x by itself

x = 8


Plug x into either of the equations.

y = -1 + 3/8(8)

y = -1 + 3

y = 2


2(8) - 5y = 6

16 - 5y = 6

-5y = -10

y = 2


(8,2)

8 0
3 years ago
If the difference of two numbers is 7 and their product is 60, what are they?
user100 [1]
X - y = 7.....x = y + 7
x * y = 60

y(y + 7) = 60
y^2 + 7y = 60
y^2 + 7y - 60 = 0
(y + 12)(y - 5) = 0

y + 12 = 0
y = -12....not this one because it is negative

y - 5 = 0
y = 5 <===

x - y = 7
x - 5 = 7
x = 7 + 5
x = 12 <==

so ur 2 numbers are 12 and 5
4 0
2 years ago
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