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liq [111]
3 years ago
12

3(3x+9)=-5-2x what is x

Mathematics
1 answer:
-BARSIC- [3]3 years ago
3 0

Answer:

x=2.9

Step-by-step explanation:

3(3x+9)= -5-2x ( distribute)

9x+27= -5-2x (add 2x) (subtract 27)

11x= 32 ( divide by 11)

x= 2.9

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Which value must be added to the expression x2 – 3x to make it a perfect-square trinomial?
Vitek1552 [10]

Answer:

\frac{9}{4}

Step-by-step explanation:

Given

x² - 3x

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add ( half the coefficient of the x- term )²

x² + 2( - \frac{3}{2} )x + \frac{9}{4}, thus

x² - 3x + \frac{9}{4}

= (x - \frac{3}{2})² ← a perfect square

7 0
2 years ago
Freeeee p0ints!! :) <br> have a good day
Tema [17]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
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Students in a science class are divided into 6 equal groups with at least 4 students in each group for a project. write and solv
S_A_V [24]

There are a total of 6 groups.

And each group contains at least 4 students.

So the minimum number of students is:

minimum = 6 * 4 = 24 students

 

Let us say that x represents the number of students, hence:

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5 0
3 years ago
5/8 is a fraction which represents a bit over half of a number
den301095 [7]
You are correct, <span>5/8 is a fraction which represents a bit over half of a number.</span>
3 0
3 years ago
At the beginning of the year 2000, Bob put $100 in a savings account. The bank pays Bob 5% interest on his total savings at the
nataly862011 [7]
Here, number of periods (years), n=5
Annual interest rate, i=0.05  (compounded yearly)
Present value/deposit, P=100
Future value of deposit = P(1+i)^n=100(1.05^5)=127.63 (to the nearest cent)

Answer: After 5 annual interest payments, Bob will have 127.63 in his account.
5 0
2 years ago
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