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kirza4 [7]
3 years ago
10

Help please who ever correct brainliest

Mathematics
1 answer:
Otrada [13]3 years ago
7 0

Answer:

Step-by-step explanation:

  5

3  _

    18

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Find the focus and directrix of the parabola with the equation x² = -22y.
Bad White [126]

9514 1404 393

Answer:

  focus: (0, -5.5)

  directrix: y = 5.5

Step-by-step explanation:

The equation compares to the form ...

  x² = 4py

where 4p = -22   ⇒   p = -22/4 = -5.5.

The value of p is the distance from the vertex to the focus. The negative value means the focus is below the vertex at (0, -5.5).

The directrix is above the vertex by the same amount, so is y = 5.5.

6 0
3 years ago
What is the y- intercept of the equation Y=2x+7?
expeople1 [14]

Answer:

y-intercept = 7

Step-by-step explanation:

The y-intercept is also the starting point

8 0
3 years ago
How can you tell before dividing taht the first digit of the quotient 2,874 divided by 3 is in the hundreds place?
torisob [31]
When you divide, you're doing the oposite of multiplication. To know that your partical answer is going to be in the hundreds place is you follow the pattern.
2874/3=958
you take the 3 and you divide it by the last two didits of the number given (28) and that'll get you into your hundreds place.
Hope this helped! :-)
5 0
3 years ago
2\3 a certain number reduced by 11 is equal to 4 more than that number. Find the number (show work)
ArbitrLikvidat [17]
11 - 2/3n = 4 + n
n + 2/3n = 7
3n^2 + 2 = 21n
3n^2 - 21n + 2 = 0
n = 6.903 , n = 0.09657
4 0
3 years ago
If 12 12 % of a sum of money is $40.00, what is the sum of money?<br> Ans=
pshichka [43]

Answer:

$320

Step-by-step explanation:

12 1/2% = 12.5%

12.5% = $40

1% = 40 ÷ 12.5 = $3.20

100% = $3.20 x 100 = $320

5 0
3 years ago
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