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2 years ago

15

The total simple interest owed on a loan of $8,000.00 after 60 months is $1,280.00. What is the yearly interest rate on the loan

? Show your work.

1 answer:

nirvana33 [79]2 years ago

5 0

Answer:

3.2%

Step-by-step explanation:

1280/5=256 interest per year

principal x interest rate =interest per year

8000 x interest rate =256

interest rate =256/8000

interest rate =.032 or 3.2%

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If a varies directly as b, and a = 28 when b = 7, find b when a = 5.

Reika [66]

Answer: Option B.

$b=\frac{5}{4}$

Step-by-step explanation:

If a varies directly with b then when a increases b it also increases by a factor k.

Then we can write that

$a = kb$

We know that when a = 28 then b = 7. So

$28 = k * 7$

$k=\frac{28}{7}$

$k=4$

Therefore the equation of proportionality is:

$a=4b$

So when $a=5$ then:

$5=4b\\\\b=\frac{5}{4}$

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2 years ago

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Simplify this expression 9+3x2

Len [333]

9+3x^2

It's technically already in simplest form, except you usually put x first

=3x^2+9

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3 years ago

please help :) What is 7.7 x 10 to the 8 power written in standard form? A. 770,000,000 B. 77,000,000,000 C. 77,000,000 D. 7,700

Serjik [45]

Answer:

A. 770,000,000

Step-by-step explanation:

7.7x10^8 First step is to simplify

7.7x100,000,000 Then, multiply

770,000,000

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7 0

2 years ago

It has been said that newspapers are disappearing, replaced by various electronic media. In 2004, newspaper circulation (the num

shutvik [7]

Answer:

A. $y=-1.2x+59$

B. 42.2 million

Step-by-step explanation:

Part A:

Given:

Newspapers circulated in year 2004, $y_{1}=59\textrm{ million}$

Newspapers circulated in year 2014, $y_{2}=47\textrm{ million}$

Let the time $x$ start at the year 2004. So, $x_{1}=0$

For the year 2014, $x_{2}=2014-2004=10$

Therefore, linear relationship between newspapers circulated and time passed since 2004 is given as:

$y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})\\y-59=\frac{47-59}{10-0}(x-0)\\y-59=-\frac{12}{10}x\\y=-1.2x+59$

Therefore, the equation describing the relationship is: $y=-1.2x+59$

Part B:

For the year 2018, $x=2018-2004=14$

Plug in 14 for $x$ in the above equation and solve for $y$ . This gives,

$y=-1.2(14)+59\\y=-16.8+59\\y=42.2$

Therefore, in the year 2018, the newspaper circulation will be 42.2 million.

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2 years ago

Please help me i dont know how to do this nor do i remember

Nataly [62]

Answer:

2

Step-by-step explanation:

The equation for a line is:

y=mx+b

Where m is the slope, b is the y-intercept, and x and y are the x and y coordinates.

The equation given to us is:

y=2x+3

Therefore 2 is the slope

3 0

1 year ago

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