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Agata [3.3K]
3 years ago
11

Girardo is using the model below to solve the equation 3x+1=4x+(-4)​

Mathematics
2 answers:
svp [43]3 years ago
6 0

Answer:

<h2>x = 5</h2>

Step-by-step explanation:

3x+1=4x+(-4)\qquad\text{subtract}\ 4x\ \text{from both sides}\\\\3x-4x+1=4x-4x-4\\\\-x+1=-4\qquad\text{subtract 1 from both sides}\\\\-x+1-1=-4-1\\\\-x=-5\qquad\text{change the signs}\\\\x=5

belka [17]3 years ago
5 0

Answer:

The answer is B. In step one he should have added 3 negative x-tiles to both sides.

Step-by-step explanation:

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An athlete trains on a circular track of radius 40 m and jogs 10 laps each day, 5 days a week. How far does he jog each week? Ro
mariarad [96]
Length of a circle=2πr
r=40 m
Length of the circular track=2*π*40m=80π m.

The athelete jogs each day 10 laps
1 lap-------------------80π m
10 laps-------------   x
x=(10 laps * 80π m) / 1 lap=800π m

Calculate how far he jog eache week (5 days).
1 day------------------800π m
5 days----------------   x
x=(5 days*800π m)/1day=4000π m=4000m * 3.141592...≈12566,37 m

solution: 12566 m

5 0
3 years ago
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IrinaVladis [17]

Answer:

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Step-by-step explanation:

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a_sh-v [17]
7m - 3m + 5 = 45

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3 years ago
A company makes a profit of $50 per software program and $35 per video game. the company can produce at most 200 software progra
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Let x = software program
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4 0
3 years ago
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Answer:

52

Step-by-step explanation:

4 0
2 years ago
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