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Anon25 [30]
3 years ago
13

Both roots of x^2 + Nx + 144 are equal to each other. Find all the possible values of N.

Mathematics
1 answer:
Amanda [17]3 years ago
6 0

Answer:

N=+24,-24

Step-by-step explanation:

Well this is a quadratic equation and we can make further deductions using it's discriminant

b²-4ac=0

N²-4(1×144)=0

N²-576=0

N²=576

N=√576

N=+24,-24

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Riley used a drawing to divide . He made groups of 12 with 1 left over. Hoy many groups did he make?
Yakvenalex [24]

Step-by-step explanation:

Here important information is missing. That is total number of divide.

However, it is given that riley made groups of 12 with 1left over from total number of divide. So, total number of divides on the drawing must be a multiple of 12 +1. It can be any number like 12n+1, where n is an integer. Then we ca find total number of group.  

5 0
3 years ago
Can someone help me with this question????
frutty [35]

Answer:

Hi! I think I got the answer, it is a tricky one! The answer I got was C) 1029.

Step-by-step explanation:

1. It is good to first know that 40%more means 1.4 (some number). So, if n is 40% more than the sum of the other three numbers: n= 1.4* (<em>l +m+p)</em> .

2. Also note that: <em>n+l+m+p= </em>1764; so, <em>n = 1764-l-m-p.</em>

3. Since we have two expressions for n, we can equate them to each other. Giving, 1.4* (<em>l +m+p) =1764-l-m-p . </em>Simplifying we get 2.4 (<em>l +m+p)</em>=1764.

4. <em>l +m+p =1764/2=735.</em>

5. 1764-735=1029

Hope that helps! Feel free to message back if there are any questions!

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7 0
3 years ago
There are $400$ pages in Sheila's favorite book. The average number of words per page in the book is $300$. If she types at an a
Pepsi [2]

Answer:

50hours

Step-by-step explanation:

Given that there are 400 pages in Sheila's favorite book.

The average number of words per page in the book is 300

She types an average rate of 40words per minute.

So to type 400pages of the book

Total number of words in the pages = 400×300 = 120000 words

Typing rate : 40words ------- 1minute

120000 words ----------- x minutes

Hence we have 40 × X mins = 120000 × 1min

Make X the subject

40X = 120000minutes

X = 120000/40

X = 3000minutes

Since 60minutes = 1hour

3000minutes = 3000minutes/60

= 50hours

Hence it took her 50hours to type 400pages

5 0
3 years ago
Tas
BigorU [14]

Answer: (8,10)

Step-by-step explanation:

To go from A to C, we go right 2 units and up 6 units.

So, if we let the fourth vertex be D, then to go from B to D, we must also go right 2 units and up 6 units from B.

Therefore, the answer is (8, 10).

3 0
2 years ago
Consider the following system of equations.
Sidana [21]
Y = 6x - 6  therefore   y - 6x = -6
y - 6x = 5 
so:
-6 ≠ 5
There is no solution to this system.
==========================
\left \{ {{y=6x-6} \atop {y-6x=5}} \right.  \\  \left \{ {{6x-y=6} \atop {-6x+y=5 }} \right.  \\ 0 \neq 11
6 0
3 years ago
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