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Likurg_2 [28]
3 years ago
12

When x = 3, is 3x squared 36 or 12?

Mathematics
1 answer:
lubasha [3.4K]3 years ago
4 0
3x^2=3\cdot3^2=3\cdot9=27
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On paper, use the completing the square method to solve the equation x^2 + 16x + 2. Can anyone help me with this?
scoray [572]

Answer:

x = -8 ± √62

Step-by-step explanation:

An equation needs an equals sign.  I assume the expression equals zero?

x² + 16x + 2 = 0

To complete the square, start by making the leading coefficient 1 (which it already is).

Next, take half of the b coefficient, square it, and add the result to both sides.

(16/2)² = 8² = 64

x² + 16x + 64 + 2 = 64

Factor the perfect square:

(x + 8)² + 2 = 64

Solve for x:

(x + 8)² = 62

x + 8 = ±√62

x = -8 ± √62

6 0
4 years ago
Please send me the answer with an explanation
maria [59]

Answer:

6 cm² + 6 cm²

12 cm²

surface area of the cuboid=12cm²-2 cm²

=10 cm²

8 0
3 years ago
Please help thanks!!!!
denis-greek [22]

Answer:

The third one down, 21-18=3

Step-by-step explanation:

Instead of saying that Decembers interqualtile range is from 21-18 they said it was from 21-16.

6 0
4 years ago
In the sequence 400, 200, 150, 75, 25...... what number comes next
Scorpion4ik [409]

Answer:

The next term in the sequence = -175

Step-by-step explanation:

Here, the given sequence is : 400, 200, 150, 75, 25...

Now here, in the given sequence,

First Term - Second Term = 400 - 200 = 200

Second Term -   Third Term   =  200  - 150  = 50

Third term  - Fourth Term  = 150 - 75   = 75

Fourth term - Fifth term = 75 - 25 =  50

So, following this pattern,

Fifth Term - Sixth term = 200

Or, 25 - Sixth Term = 200

or, Sixth term  =  25 - 200  = - 175

Hence, the next term in the sequence = -175

4 0
3 years ago
8x+4y=-3y<br> 32+2y=7x-42
Rama09 [41]

the answer equal to six I hope

7 0
3 years ago
Read 2 more answers
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