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marusya05 [52]
3 years ago
6

a hot air balloon descends at 60 meters per minute. the hot air balloon descends for half minute. how do i put this in an equati

on
Mathematics
1 answer:
erica [24]3 years ago
7 0
(-60/min)/2 
= -30 metres
It has descended 30 metres.
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Simplify the expression: w2 + 7w2 + 8w - 5 + 9 - 2w2
ololo11 [35]
<h3>6w^2 +8w +4 is the simplified expression</h3>

<em><u>Solution:</u></em>

Given that,

We have to simplify

w^2 + 7w^2 + 8w -5+9-2w^2

We can simplify the above expression by combining the like terms

Like terms are terms that has same variable with same exponent and same or different coefficient

From given,

w^2 + 7w^2 + 8w -5+9-2w^2

Group the like terms

w^2 + 7w^2 -2w^2 + 8w - 5+9\\\\Combine\ the\ like\ terms\\\\6w^2 +8w -5+9\\\\Combine\ the\ constants\\\\6w^2 +8w +4

Thus the given expression is simplified

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3 years ago
Sandra saves 7% of her salary for retirement. This year her salary was $2,000 more than her salary than in the previous year, an
Effectus [21]

9514 1404 393

Answer:

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Step-by-step explanation:

Where x represents the previous year's salary, its amount this year is said to be ...

  x + 2000

The equation is trying to reflect the fact that 7% of that is $3,290. The missing number is 2000:

  0.07(x +2000) = 3290

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Solving for x, we find ...

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Sandra's salary the previous year was $45,000.

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2 years ago
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statuscvo [17]
Yes ur correct
ABC=XYZ


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These matrices ARE inverses of each other!
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V=(4/3)pir^3
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V=(4/3)pi12^3
V=(4/3)pi1728
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5 0
3 years ago
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