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larisa86 [58]
2 years ago
12

Robert is going to invest $640 and leave it in an account for 20 years. Assuming the interest is compounded quarterly, what inte

rest rate, to the nearest hundredth of a percent, would be required in order for Robert to end up with $1,280?
Mathematics
1 answer:
ollegr [7]2 years ago
5 0

Answer:

Interest rate ≈ 3.48%

Step-by-step explanation:

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What is the answer to this in math 9.5(-7.8)
Minchanka [31]

Answer:

-74.1, is the answer.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
(x+6) (z-y)<br>__________<br> (x+y) <br><br><br><br>x= -3<br>y= 4<br>z= 5​
Oksana_A [137]

Answer:

The answer is 4/1

Step by step

So x=-3 y=4 and z=5 so i added - 3 +6 to get positive 3 and z - y to get postive 1. X +y gives you positive 1 also so if u join both you get an improper fraction 4/1

7 0
1 year ago
Which of the following explains why f(x) = log2x
Radda [10]

Answer:

  • There is no power of 2 that is equal to 0.
  • Its inverse does not have any x-intercepts.

Step-by-step explanation:

Given the function

\:\:f\left(x\right)=\log \:_2\left(x\right)

This function can be written as:

y=\log _2\left(x\right)

As the rule tells s that

\:y=log_ax\Rightarrow \:a^y=x

so

x=2^y\:\:

As we know that the value of x=0 at y-intercept.

0=2^y\:\:

For any value of y, this statement is false as there is no power of 2 that is equal to 0.

Also

Lets interchange x and y in the equation x=2^y\:\:  to find the inverse of the function.

y=2^x\:\:

So, it doesn't have any x-intercepts as for any value of x, the value of y can not be zero for this function.

Therefore, Its inverse does not have any x-intercepts.

3 0
2 years ago
a 3 inch radius circle is drawn inside a 7 in radius Circle if you throw a dart at the circles what is the probability you land
bulgar [2K]

Answer:0.82

Step-by-step explanation:

The first step is to determine the areas of the inner and the bigger circles.

The formula for determining the area of a circle is expressed as

Area = πr²

Where

r represents the radius of the circle.

π is a constant whose value is 3.14

Considering the inner circle,

diameter = 148.4 cm

Radius = 3 inches

Area = 3.14 × 3² = 28.26 inches²

Considering the bigger circle,

Radius = 7 inches

Area = 3.14 × 7² = 153.86 inches²

The area between the bigger and inner circles is

153.86 - 28.26 = 125.6 inches²

Probability = number of favourable outcome/number of total outcome.

the probability you land inside the bigger circle but outside smaller circle is

125.6/153.86 = 0.82

6 0
2 years ago
Need help as soon as possible
levacccp [35]
2nd answer
(The inverse of the original conditional statement)
8 0
3 years ago
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