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Over [174]
3 years ago
8

Plzzzzzzzzzzz answer asap

Mathematics
1 answer:
stepan [7]3 years ago
5 0

Answer:

A) 80

Step-by-step explanation:

b/4-23=-3

b/4=-3+23

b/4=20

b=20*4

b=80

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Derive the equation of the parabola with a focus at (−5, −5) and a directrix of y = 7
WARRIOR [948]

Answer: The equation of the parabola is (x+5)^2=-24(y-1).

Explanation:

It is given that the focus of the parabola is (-5,-5) and the directrix is y=7.

The standard form of the parabola is,

(x-h)^2=4p(y-k)

Where y=k-p is directrix and (h,k+p) is the focus.

Since focus is given,

(h,k+p)=(-5,-5)

On comparing,

h=-5

k+p=-5      .... (1)

The directrix is y=7.

k+p=7       .... (2)

Add equation (1) and (2),

2k=2

k=1

Put this value in (1).

p=-6

Put p= -6, h= -5 and k=1 in the standard form of the parabola.

(x+5)^2=4(-6)(y-1)

(x+5)^2=-24(y-1)

Therefore, the equation of parabola is (x+5)^2=-24(y-1).

8 0
3 years ago
Read 2 more answers
Plzzz help i really need help and WILL GIVE BRAINLIST IF U put them in order
Vaselesa [24]

​x, -x,-4, |-1.5|, |5|, |-6|

4 0
3 years ago
A trinomial with a leading coefficient of 3 and a constant term of -5
Yakvenalex [24]
This is one example of a trinomial with a leading coefficient of 3 and a constant term of -5

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Sylvia, John, and Peter invested their savings in a bank. The ratio of the investment of Sylvia's to John's is 1: 3 and that of
Nastasia [14]

Answer:

4 : 12 : 15

Step-by-step explanation:

S : J = 1 : 3

J : P= 4 : 5

Using John's ratio to find a common ratio for all

S : J

(1 : 3)4 = 4 : 12

J : P

(4 : 5)3 = 12 : 15

Therefore our ratio is

S : J : P

4 : 12 : 15

3 0
2 years ago
Can some one answer this?
timofeeve [1]

9514 1404 393

Answer:

  (c)  2

Step-by-step explanation:

A graph shows the zeros are -5, -3, 0, 2. Of these, only 2 is on your list.

  2 is a zero of the expression

4 0
2 years ago
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