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tiny-mole [99]
2 years ago
12

Equations and inequalities

Mathematics
2 answers:
DerKrebs [107]2 years ago
8 0
Inequalities and equations use similar steps to solve, but inequalities give a range of numbers that can represent the variable while an equation will give a direct answer.

Example:

4+5x=24

First you would subtract 4 or add the opposite of 4 from 24.

4+5x=24
+(-4) +(-4)
—————
5x=20

Then divide each side by 5 or multiply each side by the reciprocal of 5 to isolate the variable.

1/5*5x=20*1/5 (reciprocal)
X= 4

You would use the same steps in an inequality but end up with a different sign.
Svetllana [295]2 years ago
5 0
Someone already answered so
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Anchara drops a penny from a height of 60 feet above the ground. The equation h=-16t^2 + 60 models the penbys height h i feet as
weeeeeb [17]

Answer:

t = 1.94 seconds

Step-by-step explanation:

we have to solve the following polynomial equation:

-16t² + 60 = 0

16t² = 60

t² = 60/16 = 3.75

t = √3.75 = 1.936491673 seconds

the equation also has another possible answer = -1.936491673 seconds, but since time cannot be negative, we have to dismiss that option

7 0
2 years ago
I think I'm getting better. But just in case I still don't understand , what are decimals?
vagabundo [1.1K]
Decimals are a number and a dot and more numbers
8 0
3 years ago
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zhuklara [117]
We know that
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therefore
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5 0
3 years ago
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Factor completely please
nasty-shy [4]

Answer:

it the third one

8 0
3 years ago
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Need this by tomorrow please and thank you!​
Marrrta [24]

Answer:

I think it's x=5

Step-by-step explanation:

3x+15=2x+20

-2x. -2x

x+15=20

-15. -15

x=5

sorry if is not the answer

5 0
2 years ago
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