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UNO [17]
3 years ago
11

Willie scored 20% higher on his second math test than his first. If his first score was 82, what was his math test, rounded to t

he nearest percent? (PLEASE SHOW STEPS!!!)
Mathematics
1 answer:
hjlf3 years ago
8 0
20% = 0.02
82 * 0.02 = 1.64

82 + 1.64 = 83.64 = 84 (rounded)

Answer:<span>his second math test score was 84</span>
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bazaltina [42]

Answer:

P(B|W)=0.5

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8 0
3 years ago
2x+14= -21-5x<br> Need to find out what x is but a step by step explanation please
adoni [48]
Notice how on both sides of the equation there is one coefficient (number being multiplied by x) and a constant (just a plain number). You want all constants to be on one side and all coefficients on the other. He’s how do to that:
2x+14=-21-5
I am choosing that all constants will be on the right side, so I will do the inverse operation of any constant on the left side to remove it. Here, a constant on the left side is 14. I will subtract 14 from both sides of the equation. Positive 14 minus 14 is zero, so it cancels out and removes it.
2x+14-14 = -21-5x
2x = -35-5x
See how the 14 is now gone? The equation looks much simpler now. Okay next, you can see that there is a coefficient on the “constant side” that I’ve chosen, so I am going to remove that. Negative 5 plus positive 5 equals zero. Do this on both sides of the equation.
2x+5x = -35-5x+5x
7x = -35
Now the equation is just two numbers. All that is left to do is divide by the last coefficient, 7, in this case.
7x/7 = -35/7
x = -5
8 0
1 year ago
Read 2 more answers
Plz plz plz help I just found out that I have summer hw and I only have two days to do it plz plz help
arlik [135]
Idk seriously i suck at math but i use photomath it is a really good app u should try it
4 0
3 years ago
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