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3 years ago

Felix borrowed $400 and must pay 12% interest. How much must be paid

Mathematics

2 answers:

vodka [1.7K]3 years ago

6 0

Answer:

$448

Step-by-step explanation:

he must pay 400 + (12% of 400)

12% of 400 is 48

400 + 48 = 448

AleksandrR [38]3 years ago

5 0

Answer:

448

Step-by-step explanation:

So, here is the formula for that:

Fa=Ia(1+per)

First off, the percentage(per) would be represented as a decimal(.12). The initial amount (Ia) would be 400. The "+" is there because of increasing interest. This would be the equation:

400(1+.12)

Use the distributive property and you get 448

Your welcome

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GarryVolchara [31]

Part 1: The equation of the line is $y=2x+1$

Part 2: The equation of the line in slope intercept form is $y=-3x-1$

Explanation:

Part 1: It is given that the point A is $(1,3)$ and the line B is $y=2 x-2$

To determine the line passing through the point A and parallel to line B, let us first determine the slope and y-intercept.

From the equation of line B, the slope is $m=2$

Substituting the point $(1,3)$ and $m=2$ in slope intercept form $y=mx+b$ , we have,

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$3=2+b$

$1=b$

Thus, the y-intercept is $b=1$

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Thus, the equation of the line passing though point A and parallel to line B is $y=2x+1$

Part 2: The given two coordinates are $(-1,2)$ and $(1,-4)$

To determine the equation of line in slope intercept form, first we shall find the slope and y-intercept.

From the graph, we can see that the line touches the y-axis at -1.

Hence, the y-intercept is $b=-1$

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Thus, the slope is $m=-3$

Substituting the values $b=-1$ and $m=-3$ in the slope intercept formula $y=mx+b$ , we get,

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2 years ago

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UNO [17]

Answer:

x = 10

Step-by-step explanation:

2x/3 + 1 = 7x/15 + 3

(times everything in the equation by 3 to get rid of the first fraction)

2x + 3 = 21x/15 + 9

(times everything in the equation by 15 to get rid of the second fraction)

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(subtract 21x from 30x; subtract 45 from 135)

9x = 90

(divide 90 by 9)

x = 10

<h2>Another solution:</h2>

2x/3 + 1 = 7x/15 + 3

(find the LCM of 3 and 15 = 15)

(multiply everything in the equation by 15, then simplify)

10x + 15 = 7x + 45

(subtract 7x from 10x; subtract 15 from 45)

3x = 30

(divide 30 by 3)

x = 10

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