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4vir4ik [10]
3 years ago
13

A ladder is 10 feet long and rests on a wall. The base of the ladder is 5 feet from the wall. Determine how high the ladder touc

hes the wall.

Mathematics
2 answers:
mr Goodwill [35]3 years ago
8 0

Answer:

8.66

Step-by-step explanation:

Alex Ar [27]3 years ago
5 0
8.660 ft a squared + b squared = c squared
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Use the "rule of 72" to estimate the doubling time (in years) for the interest rate, and then calculate it exactly. (Round your
bonufazy [111]

Answer:

Using the rule of 72, the doubling time is 9.35 years.

The exact answer is that the doubling time is 8.89 years.

Step-by-step explanation:

By the rule of 72, we have that the doubling time D is given by:

D = \frac{72}{Interest Rate}

The interest rate is in %.

In our exercise, the interest rate is 7.7%. So, by the rule of 72:

D = \frac{72}{7.7} = 9.35.

Exact answer:

The exact answer is going to be found using the compound interest formula(since the rule of 72 is a simplification of this formula).

The compound interest formula is given by:

A = P(1 + \frac{r}{n})^{nt}

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

So, for this exercise, we have:

We want to find the doubling time, that is, the time in which the amount is double the initial amount, double the principal.

A = 2P

r = 0.077

There are 52 weeks in a year, so n = 52

A = P(1 + \frac{r}{n})^{nt}

2P = P(1 + \frac{0.077}{52})^{52t}

2 = (1.0015)^{52t}

Now, we apply the following log propriety:

\log_{a} a^{n} = n

So:

\log_{1.0015}(1.0015)^{52t} = \log_{1.0015} 2

52t = 462.44

t = \frac{462.44}{52}

t = 8.89

The exact answer is that the doubling time is 8.89 years.

6 0
3 years ago
The variables x and y vary inversely. When y is 5, x is 3. What is x when y is 15?
koban [17]
The variables x and y vary inversely. When y is 5 x is 3, so when y is 15 x is 9.
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Jillian and Dawn are playing a game of miniature golf. In this game, the score on a hole is the number of putts it takes to
inysia [295]

Answer: B

Step-by-step explanation:

3 0
3 years ago
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the frequency table shows the number of books some students read last summer. Based on the data in the table, which statement is
Whitepunk [10]

Answer:

  A.) nine more girls read 6 or more than boys who read 6 or more books

Step-by-step explanation:

Let's examine the statements ...

  a) 24 is 9 more than 15 . . .  TRUE

  b) 41 is 6 more than 36 . . . false

  c) 32 is twice as many as 15 . . . false

  d) 24 is twice as many as 48 . . . false

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Click on the phrase (s) that describe a nonlinear function.Kathy is planning to move to a different state next month. She finds
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Answer:

The rental company also provides 4 different sizes of moving boxes for purchase.The volume of each box doubles in size from the volume of the next smallest box

Step-by-step explanation:

Linear functions those relation which produces a straight line graph while non - linear functios produces curves or other shapes asides a straight line. Non linear functios could be quadratic, Exponential or so on in nature.

Equation of a linear equation include :

y = a + bx OR

y = bx

First expression :

y = $50 + x ;

slope, b = 1 ; intercept, a = 50

Third expression :

y(x) = 105x

Second expression:

V(x) = V0 * e^2x

Second expression is exponential while the first and third is linear.

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2 years ago
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