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mr_godi [17]
3 years ago
13

L=a+(n-1)d solve for n

Mathematics
1 answer:
earnstyle [38]3 years ago
3 0

Answer:

(L-a)/d + 1 = n

Step-by-step explanation:

Let's isolate (n-1), and after that isolate n:

1) subtract a from both sides:  L - a = (n-1)d

2) Divide both sides by d:  (L-a)/d = n-1

3) Add 1 to both sides, to isolate n:            (L-a)/d + 1 = n

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Please simplify: √4ab^3c^8
Margaret [11]

Answer:

2b√abc^8 is the correct answer

6 0
3 years ago
I really need help with this question, pls help!!
Marrrta [24]

Answer:

Step-by-step explanation:

Here the average rate of change would be

                  f(6) - f(1)      162 - (-8)

a. r. of c. =  ----------- = ------------------ = 154/5 = 308/10 = 30.8 or 30 8/10

                      6-1                  5                     or  30 4/5

6 0
4 years ago
The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?
svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

V(t) = V(0)(1-r)^{t}

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that r = 0.16

So

V(t) = V(0)(1-r)^{t}

V(t) = V(0)(1-0.16)^{t}

V(t) = V(0)(0.84)^{t}

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

V(t) = V(0)(0.84)^{t}

0.5V(0) = V(0)(0.84)^{t}

(0.84)^{t} = 0.5

\log{(0.84)^{t}} = \log{0.5}

t\log{0.84} = \log{0.5}

t = \frac{\log{0.5}}{\log{0.84}}

t = 3.98

The half life of the car is 3.98 years.

7 0
4 years ago
Point-slope equation of the line through (6,4) and (7,2)
Nataly [62]

Answer:

<h2>y - 4 = -2(x - 6) or y - 2 = -2(x - 7)</h2>

Step-by-step explanation:

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

y-y_1=m(x-x_1)

m - slope

The formula of a slope:

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

We have the points (6, 4) and (7, 2). Substitute:

m=\dfrac{2-4}{7-6}=\dfrac{-2}{1}=-2

Using the first point

y-4=-2(x-6)

Using the second point

y-2=-2(x-7)

7 0
4 years ago
What is compatible number to 231
MAXImum [283]
The compatible number to 231 is I think is 30
4 0
3 years ago
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