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VikaD [51]
3 years ago
9

Alejandro solved the equation 5(7x^2-2)-8=3. He wrote 5(7x^2-2)=11 as his first step. Which property justifies his first step?

Mathematics
2 answers:
zheka24 [161]3 years ago
8 0

His first step justifies The Addition Property of Equality. Hope this helps.

Scorpion4ik [409]3 years ago
3 0
The addition property of equality. It says that if you add the same number to each side of the equation, the two sides of the equation will be equal. In this case, the number 8 was added to each side.

Hope this helps :)
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What is the result of subtracting the second equation from the first? <br> -4x-2y=-2<br> x-2y=9
diamong [38]

Answer:

x=2.2

y=-3.4

Step-by-step explanation:

subtract the second from the first

-5x=-11

x=2=2

substituting by x in the first equation

so y=-3.4

6 0
2 years ago
Jimmy notices 7oranges weigh the same as 5 apples. If Jimmy has 28 oranges, how many apples would Jimmy need to equal the weight
pychu [463]

Answer:

20

Step-by-step explanation:

7 times 4 equals 28 and 5 times 4 equals 20 so the answer is 20

6 0
2 years ago
Consider the linear and quadratic functions appearing in the figure below.
Bumek [7]

Answer:

step 2:do subtraction in the parentheses  

Step 3: distribute

Step 4: add

Step-by-step explanation:

4 0
3 years ago
EASY FOR THE RIGHT PERSON! TONS OF POINTS! Write these functions as numbers instead of words
Elena L [17]
A. f(b) = 3+b

b. f(x) = (x+3)²

c. f(x) = (x+3)/(12-x)

d. f(x) = x⁵-4x+6

e. f(x) = -45

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3 0
3 years ago
Twelve more than half of a number is equal to the number
tester [92]
Let's consider that number to be 'x'..
So, twice the number (2x) is 12 greater than than the half of the number.
So the equation will be like,
2x=12+x/2
Solving this further,
2x=(24+x)/2
=> 4x=24+x
=>4x-x=24
=>3x=24
=>x=8..
So the number is "8".
5 0
2 years ago
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