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Yuliya22 [10]
3 years ago
7

x - 21 = 0" alt="2x {}^{2} + 4x - 21 = 0" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Ugo [173]3 years ago
7 0
The answer should be  21/8 hope it helps

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Is 2x^2+y =3x - 1 a function quadratic
erastovalidia [21]

Answer:

Step-by-step explanation: yes because when rewritten in standard form the x term will still be raised to the 2nd power.

5 0
3 years ago
Which equation has a graph that is a parabola with a vertex at (5,3)?
lara [203]

Answer:

y =  (x -5)² + 3.

Step-by-step explanation:

Given : parabola with a vertex at (5,3).

To find : Which equation has a graph that is a parabola.

Solution : We have given vertex at (5,3).

Vertex form of parabola : y = (x -h)² + k .

Where, (h ,k )  vertex .

Plug h = 5  , k= 3 in vertex form of parabola.

Equation  :y =  (x -5)² + 3.

Therefore, y =  (x -5)² + 3.

6 0
3 years ago
-1.398 = 2.2 + n/-5.53<br> Does this look good so far? <br> -1398 = 2200 + n/5530 - 2200
insens350 [35]

Answer:

  n = 19.89694

Step-by-step explanation:

You can work the problem using decimal numbers. There is no need to convert everything to integers. Trying to do so just gets you in trouble.

Subtract 2.2 from both sides:

  -1.398 -2.200 = n/-5.53

  -3.598 = n/-5.53

Now, multiply both sides by -5.53:

  (-5.53)(-3.598) = n = 19.89694

_____

The one rule that cannot be violated in algebra is that <em>you must do the same thing to both sides of the equation</em>.

_____

Your "solution" so far has a couple of errors. The first is that you have apparently multiplied all of the numbers by 1000. Unfortunately, when you multiply a denominator by 1000, it is the same as dividing by 1000. So, you have multiplied the left side by 1000, multiplied one term on the right by 1000 and divided another term on the right by 1000. This turns the equation into something different than what you started with, and will give a wrong answer.

The second error is that you have subtracted 2200 only from the right side. This, too, will turn the equation into something different than what you started with, and will give a wrong answer.

7 0
3 years ago
A prism of height 12" has a rhombus with diagonals 6" and 8" for a base. Find the volume. 240 cu. in. 288 cu. in. 576 cu. in.
weqwewe [10]
Its not 576 because i got it wrong 

6 0
3 years ago
Read 2 more answers
Hey if some people wanna talk then pls do if ur 15 or older bc i bored thnx fam
inna [77]

Answer:

sure

Step-by-step explanation:

3 0
3 years ago
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