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grin007 [14]
3 years ago
11

Write as a mixed number to the lowest terms 9 1/4 - 6 2/3 =

Mathematics
1 answer:
yuradex [85]3 years ago
5 0
The answer is 2 7/12 your welcome give me brainlist
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Solve the equation by using the quadratic formula. x^2+2x=6​
katrin [286]

Answer:

\Huge \boxed{{x=-1\pm \sqrt{7}}}

Step-by-step explanation:

x² + 2x = 6

Subtract both sides by 6.

x² + 2x - 6 = 0

ax²+bx+c=0

a=1, b=2, and c=-6

We can apply the quadratic formula.

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Plug in the values.

\displaystyle x=\frac{-2\pm\sqrt{2^2-4(1)(-6)}}{2(1)}

Evaluate.

\displaystyle x=\frac{-2\pm\sqrt{4-(-24)}}{2}

\displaystyle x=\frac{-2\pm\sqrt{28}}{2}

\displaystyle x=\frac{-2\pm 2\sqrt{7}}{2}=-1 \pm \sqrt{7}

6 0
3 years ago
Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively. How many times will t
Evgen [1.6K]

Answer:

60 times will they ring together at the same second in one hour excluding the one at the end.

Step-by-step explanation:

Given : Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively.

To find : How many times will they ring together at the same second in one hour excluding the one at the end?

Solution :

First we find the LCM of 3, 6, 10, 12 and 15.

2 | 3  6  10  12  15

2 | 3  3   5   6  15

3 | 3  3   5   3  15

5 | 1    1  5   1    5

  | 1    1   1   1     1

LCM(3, 6, 10, 12,15)=2\times 2\times 3\times 5

LCM(3, 6, 10, 12,15)=60

So, the bells will ring together after every 60 seconds i.e. 1 minutes.

i.e. in 1 minute they rand together 1 time.

We know, 1 hour = 60 minutes

So, in 60 minute they rang together 60 times.

Therefore, 60 times will they ring together at the same second in one hour excluding the one at the end.

6 0
3 years ago
Helppppopppppppppppppphsbdbfhfevd​
sdas [7]

Answer:

d

Step-by-step explanation:

because it says in your thing up above to exchange but there is a 50% im wrong

4 0
3 years ago
Read 2 more answers
How to convert 90% into a decimal
Llana [10]

The first thing you  do is go two space forward  like start at the o and move two spaces  forward you put a decimal  at 9 like this 0.90 and that's  how  you  do  it

6 0
3 years ago
Read 2 more answers
11×11=4 22×22=16 33×33=?
Kay [80]
This is your answer  <span>33 x 33 = 4^3 = 64</span>
7 0
3 years ago
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