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DaniilM [7]
3 years ago
6

Write the following algebraic expression for this sentence:

Mathematics
1 answer:
Ludmilka [50]3 years ago
8 0

Answer:

8n² - 5

Step-by-step explanation:

n = 'a number'

You might be interested in
What is the probability of rolling a number greater than 3 on a single die (dice)?
SpyIntel [72]
The probability would be 1/2
8 0
4 years ago
Are they similar? Please help, I'm overthinking this problem....​
sveticcg [70]
<h3>Answer: The rectangles are <u>not</u> similar</h3>

========================================================

Explanation:

Divide the vertical sides to get the fraction 18/7

Divide the horizontal sides to get the fraction 30/6

If the rectangles were similar, then 18/7 = 30/6 is a possibility (there's one more possibility but we'll get to it later).

If 18/7 = 30/6 were true, then we should be able to cross multiply and get another true statement. Let's find out

18/7 = 30/6

18*6 = 7*30

108 = 210

We get a false statement, which means the original equation is false.

-----------------------

Now let's say we rotated the bottom rectangle so that the '7's were horizontal and the '6's were vertical. We'll divide the corresponding horizontal sides and vertical sides to get the two fractions of 30/7 and 18/6

Let's see if we have a true equation or not

30/7 = 18/6

30*6 = 7*18

180 = 126

Like before, we end up with a false equation which means the original is false.

No matter how we rotate the rectangles, we do <u>not</u> end up with similar figures.

-----------------------

Here's another way to see we don't have similar rectangles. We'll form the fraction 18/30 based on dividing the vertical and horizontal sides of the upper rectangle. The lower rectangle gives us 7/6

18/30 = 7/6

18*6 = 30*7

108 = 210

This is more evidence that the rectangles aren't similar. The same will happen if we tried 18/30 = 6/7

8 0
3 years ago
Anna starts a fixed deposit with $178000, the bank offers 9.5% per year simple interest for 8 months. she has the option of rest
soldier1979 [14.2K]

Using simple interest, we have that:

A) The interest due after 8 months is $11,272.33.

B) The total value of the investment will be of $189,986.24.

The amount of interest earning using <em>simple interest</em>, after <u>t years</u>, with an <u>yearly interest rate of i</u> and an <u>initial investment of P</u> is given by:

E = Pit

In this problem:

  • Deposit of $178,000, hence P = 178000.
  • Interest rate of 9.5% per year, hence i = 0.095.
  • 8 months, the time is in years, hence t = \frac{8}{12} = \frac{2}{3}

Item a:

E = Pit

E = 178000(0.095)\frac{2}{3} = 11272.33

The interest due after 8 months is $11,272.33.

Item b:

For the second interest, we consider P = 11272.33, hence:

E_2 = Pit

E_2 = 11272.33(0.095)\frac{2}{3} = 713.91

The total value will be composed by:

  • The initial deposit of $178,000.
  • The first interest of $11,272.33.
  • The second interest of $713,91.

Hence, it will be:

T = 178000 + 11272.33 + 713.91 = 189986.24

The total value of the investment will be of $189,986.24.

A similar problem is given at brainly.com/question/13176347

3 0
3 years ago
PT = 7x + 8 and TQ = 9x - 6
erastova [34]

Answer:

t is 7

Step-by-step explanation:

i did it

4 0
3 years ago
Can anyone help me with this math question
Karolina [17]

Answer:

Dan made more money last month

Step-by-step explanation:

15/100   10/100 Make the Percent's into decimal's and Dan's is still higher

6 0
3 years ago
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