The student's error was in first step where he added -0.72 instead of 0.72
Step-by-step explanation:
Given equation;
z + (-0.72) = -2.5
When solving for z, eliminate the other numbers from one side.
Step 1: z + (−0.72) + (−0.72) = −2.5 + (−0.72)
In this step, the student should have added 0.72 because -0.72 was already present in the equation and to eliminate it, he should have add same number with opposite sign.
According to this Step, -0.72 and -0.72 would have been added, because according to mathematics, two numbers with minus sign are added and the sign remains same.
The student's error was in first step where he added -0.72 instead of 0.72
Keywords: addition, subtraction
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8a-4a=4a
4a-6a=-2a
-2a-8=2a
-2a+2a=8
0 is not equal to 8
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Answer:
x=-58/15
Step-by-step explanation:
distribute first 10-2.5x+12=21-10x-28
Simplify(add the numbers) 22-2.5x=-7-10x
move the variable to the left side 22-2.5x+10x=-7
move the constant to the right side -2.5x+10x=-7-22
simplify like terms 7.5x=-29
divide by 7.5 x=-58/15
alternate forms are x=-3 13/15 or x=-3.86
Answer:
4 adults are there to look out for the 12 kids and
and at least 2 adults are there to look out at the dancers
Step-by-step explanation:
hope this helps(^_^") fat guy deluxe (΄◞ิ౪◟ิ‵ )
please mark me brainliest!
Answer:
Im pretty sure it means the highest number in a group of numbers
Step-by-step explanation: