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bazaltina [42]
3 years ago
8

David invested $220 in a savings account that offers a 3% return on the investment. The value of

Mathematics
1 answer:
STatiana [176]3 years ago
7 0

Answer:

20 years

Step-by-step explanation:

Using the formula; A = P(1 + r)^t

We can plug in the known to find t

400 = 220(1.03)^t

then solve for t;

1.818 = 1.03^t

Introducing In

In 1.818 = t × In (1.03)

t = 20.225  

t = 20 years to the nearest year

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Expand the expression 7 (9x-2)
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If you would like to expand the expression 7 * (9 * x - 2), you can do this using the following steps:

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The correct result would be 63 * x - 14.
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3 years ago
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Point M is between points L and N on LN. LN
34kurt

Answer:

Step-by-step explanation:

     4x+8                  27

L-------------M-------------------------N

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LM = 4x+8

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4x+8 + 27 = 6x

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17.5 = x

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3 years ago
How do I find the volume of a square
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4 years ago
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Help asap plzz<br> -3x + 7 = -8
viva [34]

Answer:

x=5

Step-by-step explanation:

-3x+7=-8

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-3x=-8-7

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x=-15/-3

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Hope it helps!

8 0
3 years ago
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Find a vector equation and parametric equations for the line. (Use the parameter t.) The line through the point (0, 15, −6) and
Len [333]

<x = 0 + 2t, y = 15 - 3t, z = -6 + 7t> is the vector parametric equation of the line parallel to the given one and that passes through the point (0, 15, −6).

According to the statement

we have to find that the vector equation with the help of the given line equation and the points.

So, For this purpose, we know that the

A vector equation is an equation involving a linear combination of vectors with possibly unknown coefficients.

And the given points is (0, 15, −6) and the lines

x = −1 + 2t,

y = 6 − 3t,

z = 3 + 7t

From these equation of lines:

Let a = -1 and b = 6 and c = 3

Then

Now, if we want this line to pass through the point (0, 15, -6), then we can replace the correspondent values in the constant term for each equation:

So, Put it in the given equations then

x = 0 + 2t and y = 15 - 3t and z = -6 + 7t

and the vector equation become

<x = 0 + 2t, y = 15 - 3t, z = -6 + 7t>

So, <x = 0 + 2t, y = 15 - 3t, z = -6 + 7t> is the vector parametric equation of the line parallel to the given one and that passes through the point (0, 15, −6).

Learn more about vector parametric equation here

brainly.com/question/17088529

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