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laiz [17]
3 years ago
5

In 2013, the national debt was

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

You can use a calculator for the decimal operations, but practice some by hand because on the quiz and the test you will not have a calculator.

Step-by-step explanation:

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The equation of a circle is x^2 + y^2= 42.25 Find the radius of the circle.
poizon [28]

Answer:

radius = 6.5

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ( where r is the radius )

x² + y² = 42.25 ← is in this form

with r² = 42.25 ( take the square root of both sides )

r = \sqrt{42.25} = 6.5

7 0
3 years ago
SOMEONE PLEASE HELP!
Liula [17]
13.1.22
14.2.24
15.1.5
16.1.08
6 0
3 years ago
Walter walked 15.5 blocks from his house to work. It took him 35 minutes. What is his rate in blocks per hour?
Naddik [55]
26.57 block per hour
7 0
3 years ago
Which of the following best describes the expression 3x + 2y + 8z?
Gwar [14]
The expression above is composed of 3 terms which are: 3x, 2y, and 8z. All of the terms are the product of two items. The first term is a product of 3 and x. The second is a product of 2 and y. Lastly, the third is a product of 8 and z. 

<span>Thus, the expression is a sum of three products and there are only three terms. This answer is the second among the four choices.

hope this helps    :    )

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8 0
3 years ago
You anticipate that a $2000 investment in a local business will pay an average of 4% interest in each of the next 5 years. Deter
Dovator [93]
Since this is a problem in exponential growth/decay, y = ab^x is the formula that will be used to solve this problem.

The initial value, "a", is the value you start out with and in this case, it is $2000. 

The growth/decay factor is what "b" represents, and it is 4%. We need to change the percentage into a decimal, so we will take the percent symbol, change it into a decimal, and move it two places to the left. This is make it 0.04. The problem also mentions interest, implying an exponential growth. Therefore, you will add 0.04 by 1: 1+0.04 = 1.04. 

The "x" represents an amount of time. It is 5 years. The equation should be written like this: 

y = 2000(1.04)^5
y = 2433.30. When rounded to the nearest dollar, it is $2433. 

7 0
3 years ago
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