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prohojiy [21]
3 years ago
7

X2-2x=8

rmula1" title="x { }^{2} - 2x = 8 \\ \\ " alt="x { }^{2} - 2x = 8 \\ \\ " align="absmiddle" class="latex-formula">
​

Mathematics
1 answer:
iris [78.8K]3 years ago
4 0
I hope this helps :)!

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Write the vertex form of the equation of the parabola which has a vertex of (0,0) and contains the point (2,-2)
Anettt [7]
\bf \qquad \textit{parabola vertex form}\\\\
\begin{array}{llll}
\boxed{y=a(x-{{ h}})^2+{{ k}}}\\\\
x=a(y-{{ k}})^2+{{ h}}
\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\
-------------------------------\\\\
y=a(x-{{ h}})^2+{{ k}}\qquad 
\begin{cases}
h=0\\
k=0
\end{cases}\implies y=a(x-0)^2+0
\\\\\\
y=ax^2\qquad 
\begin{cases}
x=2\\
y=-2
\end{cases}\implies -2=a2^2

solve for "a", to get the coefficient, and then plug it back in the equation.
7 0
4 years ago
Symify 9 to the 2 power / 9 to the 7 power
fenix001 [56]

9514 1404 393

Answer:

  1/9^5

Step-by-step explanation:

  \dfrac{9^2}{9^7}=\dfrac{9\cdot 9}{9\cdot 9\cdot 9\cdot 9\cdot 9\cdot 9\cdot 9}=\dfrac{1}{9\cdot 9\cdot 9\cdot 9\cdot 9}=\boxed{\dfrac{1}{9^5}}

_____

An exponent is an indicator of repeated multiplication. As you can see, factors in the numerator cancel those in the denominator, so the result is the difference of the exponents.

8 0
3 years ago
Jack had 15 rosebushes he has the same number of yellow,red,and pink bushes,and 3 multicolored bushes find the number of yellow
Masteriza [31]

Answer:

4 yellow rosebushes

Step-by-step explanation:

Givens(What the question tells us):

m = 3(There are 3 multicolored bushes)

r + y + p = 15 - m( total red bushes plus total yellow bushes plus total pink bushes equals 15 - the amount of multicolored bushes)

r = y = p (total red bushes equals total yellow bushes which also equals total pink bushes)

Since we know m =3 we can substitute m for 3 in the second equation:

r + y + p = 15 - 3.

r + y + p = 12

Now since r, y, and p are equal we can divide the total amount left (12) by the 3 kinds of roses left to get our answer:

12/ 3 = 4 red, 4 yellow, and 4 pink

Since we are solving for the amount of yellow the answer is:

4 yellow rosebushes

5 0
3 years ago
Read 2 more answers
*PLEASE HELP ME!!!!!**
serious [3.7K]
For the first question, the answer is A. You take 90 and multiply it by 3, then you get the time that it takes for one worker to mow the large park. 

For the second question, you take 50 = k/0.25. To find k, you would want to multiply both sides with 0.25 to cancel the 0.25 on k's side. 50 times 0.25 is 12.5. I think C is your answer although I'm not really confident. 


6 0
3 years ago
Read 2 more answers
On a scaled map,a rectangular poster has dimensions of 6 inches by 8 inches.If one inch on the scale equates to 10 meters in rea
Sever21 [200]
If one inch equals 10 meters, then multiply each inch by 10 to get the real dimensions (in meters)
6 * 10 = 60
8 * 10 = 80
Then multiply the length of the sides to get the area
60 * 80 = 4800 meters squared.
4 0
3 years ago
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