Solve d over r equals t for r

Please help PLEASE BRAINLY I WILL GIVE U 5 STARS

Aleks04 [339]

Answer:<em> 20 degrees</em>

Step-by-step explanation:

Find the 180 (degrees angle)= angle CD

180 degrees-110 degrees= 70 degrees

By using the OAT (opposite angle theorem), the opposite of the angle OD (you know what i mean) will be 70 degrees too. So, Angle BO is 70 degrees too. We know the right angle there is 90 degrees because of the square sign so, create another 180 degrees angle but subtract 160 degrees (70+90) from 180 degrees which is 20 degrees.

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5 0

3 years ago

What is 34.00 times 2.9 ?

abruzzese [7]

98.6 is your answer.... Please mark this answer as the brainliest

7 0

3 years ago

Read 2 more answers

Question 5 Unsaved

Otrada [13]

We can use the compound interest formula

F=P(1+i)^n

where

F=Future value of investment to be found

P=present value of investment ($1000)

i=interest per period (1/4 year)=0.04/4=0.01

n=number of periods (3 years * 4 quarters = 12)

Substitute or "Plug in" values, so to speak,

F=1000*(1+0.01)^12

use a calculator to do the sum

=1126.83 (to the nearest cent, and use the proper rounding rules)

3 0

3 years ago

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.

$A = 2P$