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Naddika [18.5K]

3 years ago

8

Mindy opens a bank account with $55 and start saving five dollars per week. Sean’s grandma gives him $100 for his birthday, but

he spends $10 every week. After how many weeks would they have the same amount of money, how much will that be?

1 answer:

sveticcg [70]3 years ago

4 0

Answer:

3 weeks, $45

Step-by-step explanation:

So we can make an equation!

55+5x=100-10x

So solving for x,

X=3

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4 years ago

Please help me with these two questions, 10 points for each so in total 20!!

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Answer:

$\large\boxed{Q2.\qquad C.\ -2x+y=-2}\\\boxed{Q4.\qquad C.\ y=3x+12}$

Step-by-step explanation:

Q2:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

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The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

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$y=2x-2$ <em>subteact 2 from both sides</em>

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Q4:

The slope-intercept form of an equation of a line:

$y=mx+b$

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b - y-intercept

Put the slope m = 3 and the coordinateso f the point (-2, 6) to the point-slope form of an equation of a line:

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$y-6=3x+6$ <em>add 6 to both sides</em>

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3 years ago