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Inessa [10]
4 years ago
10

Solve the quadratic equation by completing the square. What are the missing pieces to the steps?​

Mathematics
1 answer:
nydimaria [60]4 years ago
4 0

Answer:

x = 3/2, 9/2.

Step-by-step explanation:

Line 3:  36.

Line  6: 3/2.

Last line:  9/2, 3/2.

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Solve for X: 2^3x + 1 = 2^10<br><br> please look at photo and give detailed steps!! thank you
mel-nik [20]

Step-by-step explanation:

since the bases are the same all you have to do is just get the powers of both bases which is 3x + 1 and 10

you're then going to equate 3 x + 1 to 10 and then you have to make +1 cross to the other side making it become -1

you then can subtract 1 from 10 leaving you with 9

and at the LHS we have 3x

we are gonna get rid of the three by dividing it into itself and the 9 at the RHS then <u>X = 3</u>

7 0
3 years ago
When the polynomial is written in standard form, what are the values of the leading coefficient and the constant 5x + 2 - 3x^2
Arte-miy333 [17]

\bf 5x+2-3x^2\implies \stackrel{\boxed{\textit{standard form}}}{\underset{~\hfill \textit{constant}}{\stackrel{\textit{leading coefficient}}{\stackrel{\downarrow }{-3}x+5x+\underset{\uparrow }{2}}}}

3 0
3 years ago
Calculate the area shaded.<br> To three decimal places
Georgia [21]

Answer:

\approx 116 \:  {cm}^{2}

Step-by-step explanation:

Radius of the internal circle r_1=2.3 \: cm

Radius of the external circle r_2=6.5 \: cm

Area of the shaded region = Area of external circle - Area of internal circle.

= \pi r_{2}^{2}   - \pi r_{1}^{2}   \\  \\  = \pi \{ r_{2}^{2}   -  r_{1}^{2} \}  \\  \\  = \pi \{ (6.5)^{2}   -  (2.3)^{2} \}\\  \\  = 3.14\{ (6.5 + 2.3)    (6.5 - 2.3) \}\\  \\  = 3.14\{8.8    \times 4.2 \}\\  \\   = 116.0544 \\  \\   \approx 116 \:  {cm}^{2}

5 0
2 years ago
Which equation, when solved, results in a different value of x than the other three?
kicyunya [14]
I would have to say -7(1/8)x-4/3=20.


The first and the second one both result in
-23 5/7

The last one results in -24 8/21

but the third one is -22 3/8.

So your answer is either the third of the last one. I assumed the third because, it is lower than all others and the first two are closer to 24 than they are to 22. It’s your choice on how to judge it.
5 0
3 years ago
Find the approximate value of a.<br> 4.69 in.<br> 5.09 in.<br> 11.05 in.<br> 12 in<br> 30.71 in.
kondor19780726 [428]

Answer:

4.69

Step-by-step explanation:

sin = opposite/hypotenuse

sin 23 = a/12

To solve for a, multiply both side by 12, so a is by itself.

12 · sin23 = a/12 · 12

12 · sin23 = a

use your calculator to find the sin of 23, which is approximately 0.390731128

Multiply by 12

0.390731128 * 12 = 4.688

4 0
3 years ago
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