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Mariana [72]
2 years ago
11

You plan to invest $1,210 a year for 7 years at a 9 percent annually? How much will you have in 7 years? Assume the first invest

ment is made in one year.
Mathematics
1 answer:
erastova [34]2 years ago
4 0

Answer:

See below

Step-by-step explanation:

For SIMPLE interest :

 1210 + 1210 * .09 * 7 = <u> $ 1972.30</u>

For ANNUAL COMPOUNDING of interest

  1210 ( 1 + .09)^7 = <u>$ 2211.93</u>

<u />

I do not know which one you need....what are you studying presently?

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a sacle drawing shows a room as 10 cm by 7 cm. the scale of the drawing is 2 cm = 5m. what is the actual area of the room?
Liono4ka [1.6K]

Answer:

25 m by 17.5 m

Step-by-step explanation:

7/2 = 3.5

3.5 * 5 = 15 + 2.5 + 17.5

10/2 = 5

5 * 5 = 25

3 0
3 years ago
What is the slope-intercept form of the function that contains the points (5, 6 and (9, 14?the slope-intercept form of the funct
alina1380 [7]
Correct!

The slope is (14-6)/(9-5) = 8/4 = 2;


<span>the slope-intercept form of the function that contains the points (5, 6) and (9, 14) is y - 6 = 2( x - 5 );
Then, y - 6 =2x - 10;
y = 2x - 4 ;</span>
3 0
4 years ago
Simplify completely..........​
vitfil [10]

Answer:

\frac{x}{x-1}

Step-by-step explanation:

\frac{3x^2 - 1}{x^2 - 1} - \frac{2x + 1}{x + 1}                                          [ \ x^ 2- 1 = (x-1)(x + 1) \ ]

= \frac{3x^2 - 1}{(x-1)(x  + 1 )} - \frac{2x + 1}{x + 1}\\\\=\frac{(3x^2 - 1)-(2x + 1)(x-1)}{(x + 1)(x-1)}                        [\ Taking \ LCM \  ]

= \frac{(3x^2 - 1)- (2x^2 - 2x + x - 1)}{(x+1)(x-1)}\\\\=\frac{3x^2 - 1 - 2x^2 + x + 1 }{(x+1)(x-1)}\\\\=\frac{x^2 +x}{(x+1)(x-1)}\\\\=\frac{x(x+1)}{(x+1)(x-1)}\\\\=\frac{x}{x-1}

<em><u>Finding LCM :</u></em>

Example :

                 \frac{1}{6} + \frac{1}{3}

6 = 2  x   3

3 = 1   x   3

                \frac{1}{2 \times 3} + \frac{1}{ 3} = \frac{1}{2 \times 3} + \frac{1 \times 2}{ 3 \times 2}  

[ To make the denominators same : the second fraction is multiplied and divided by 2 ]

Similarly :

 (x^2 - 1 ) = (x -1)(x+1)\\\\(x + 1)  = 1 \times (x + 1)

Same rule we applied : multiplied the numerator and denominator of the second term with ( x - 1 )

Therefore the second term becomes ,

                                       \frac{2x + 1}{x + 1} = \frac{(2x + 1)(x - 1)}{(x + 1)( x - 1)}

7 0
3 years ago
You are interested in the psychological implications of high SES. You read a paper that claims that higher social class people b
dimaraw [331]

Answer:

Option C. The real effect is 0.1

Step-by-step explanation:

The complete question is  

You are interested in the psychological implications of high SES. You read a paper that claims that higher social class people behave more unethically. The paper reports a significant difference in the propensity of high and low SES people behaving unethically. The significance level of this study was 0.05, the ratio of true to false effects in this field is 0.35, but the author was anxious to issue a press release and prepare his TED talk, so power is low, at 0.1. The probability that this study reports a real effect is

A. 0.58

B. 0.95

C. 0.1

D. 0.35

E. 0.41

Solution

Ratio of true to false effects i.e T/F = 0.35  

The power of the study indicates the real effect of the study and hence despite the true/false ration being 0.35 and the significance level of study is 0.05, the real effect of the study would be 0.1

Hence option C is correct

8 0
3 years ago
What is the slope of the line (-2,0), (0,-2)
Licemer1 [7]

Answer:-1

Step-by-step explanation:

It’s all about the work you put in to get your answer you have to subtract

4 0
3 years ago
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