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m_a_m_a [10]
3 years ago
13

Find the value of n such that x^2-3x+n is a perfect square trinomial. Please help.

Mathematics
1 answer:
Monica [59]3 years ago
4 0
For the given expression X² -3X + n and it is a perfect square trinomial.
The perfect square trinomial is in forms below:
(a-b)²
(a+b)²
When we assign n=9/4, we will have the equation below:
X² - 3X +9/4
=(X-(3/2))²

Therefore, the answer is "9/4".
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A man spent 12.5%of his money and he is left with 140 . How much money had he at first ?​
STALIN [3.7K]

Answer:

$157.50

Step-by-step explanation:

Add 12.5 % to 140

8 0
3 years ago
suppose 7,500 is invested at 1.5%, compounded continuously. what will the account balance be in 16 years?​
viktelen [127]

Answer:

\boxed {\boxed {\sf \$9,534.37}}

Step-by-step explanation:

The formula for continuously compounded is:

A=Pe^{rt}

where P is the principal amount, r is the interest rate as a decimal, and t is the amount of time.

The principal amount is $7,500 and time is 16 years. The interest rate is 1.5%. Convert this to a decimal- divide by 100 or move the decimal places two spots to the left.

  • 1.5/100= 0.015         or           1.5 --> 0.15 --> 0.015

Now we know all the values and can substitute them into the formula.

P= 7500 \\r= 0.015 \\t= 16

A= 7500(e^{0.015*16})

Solve the multiplication in the exponent first.

A= 7500(e^{24})

Solve the exponent.

A= 7500 (1.27124915)

A=9534.368627

Round to the nearest cent (hundredth place). The 8 in the thousandth place tells us to the round the 6 to a 7.

A=9534.37

The account balance will be <u>$9,534.37</u> after 16 years.

7 0
3 years ago
What is 800,500 minus 276,664
Maslowich

Answer:

That would equal 523,836

7 0
4 years ago
Read 2 more answers
A factory ships widgets in crates. There are 12 boxes in each crate. Each box holds 275 widgets. How many widgets are in one cra
Serhud [2]
There are 3300 widgets in each crate.
         275   widgets
    x     12    boxes
  __________________________
    3300   widgets in one crate

Hope this helps,
~ Harley Quinn ~
6 0
3 years ago
Read 2 more answers
Find the area of the shape shown below
myrzilka [38]

Answer: 42.5

Step-by-step explanation:

9 x 3.5 = 31.5

2 x 2 = 4

2 x 2 / 2 = 2

2 x 5 / 2 = 5

31.5 + 4 + 2 + 5 = 42.5

6 0
3 years ago
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