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grigory [225]
3 years ago
8

Six times the square of a number x plus 11 times the number equals 2. What are possible values of x?

Mathematics
1 answer:
Bas_tet [7]3 years ago
7 0

Answer:

-2, 1/6

Step-by-step explanation:

6x²+11x=2

6x²+11x-2=0

Delta=11²-4×6×(-2)=121+48=169

x1,2=(-11 +- sqrt(169))/(2×6)=

(-11 +- 13)/12

x1=(-11+13)/12=2/12=1/6

x2=(-11-13)/12=-24/12=-2

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What is the smallest multiple of 18 of the form 2A945B, where A and B are digits?
musickatia [10]

Answer:

219456

Step-by-step explanation:

It must end in 0,2,4,6,8 (divisible by 2 rule) and the digits must sum to a multiple of 9(divisible by 9 rule).

The digit sum is 2+A+9+4+5+B=20+A+B.

We want to make A as low as possible because it's a higher digit than B.

If A is as low as possible, we have that the sum is 20+0+7=27. Uh-oh. B has to be even! So A=0 doesn't work.

If A=1, we have that the sum is 20+1+6=27. Yay!

So, the answer is \boxed{219456}

6 0
2 years ago
Where is the number 5 − 9 located on a horizontal number line? (1 point)
taurus [48]
9 units to the left of 5. 
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3 years ago
Scientific notation of 47300
Reil [10]
4.7 x 10^4
or 5 x 10^4

<span>The scientific notation of 70, 030, 000. To find the scientific notation of this value </span><span><span>
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5.  </span>7.003 x 10^7 </span>


6 0
3 years ago
What is the cost of six filters if the cost of 8 filterscost$39.92
Usimov [2.4K]
With this given information that 8 filters = $39.92. What you can do is divide $39.92 by 8 and get the individual price of 1 filter. So, $39.92/8 = $4.99 (price of 1 filter). The question is asking for the cost of 6 filters so you can multiply $4.99 with 6 filters and get $29.94. The answer is $29.94 for 6 filters.
8 0
3 years ago
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Mariulka [41]

Answer:

3)  5

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Step-by-step explanation:

substitute the value of 9 for each 'x' in the expression

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7 0
2 years ago
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