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devlian [24]
4 years ago
15

What are the real zeros for the function f(x)=x^2-3x-28

Mathematics
2 answers:
Alchen [17]4 years ago
5 0
x^2-3x-28=0\\
x^2-7x+4x-28=0\\
x(x-7)+4(x-7)=0\\
(x+4)(x-7)=0\\
x=-4 \vee x=7
nasty-shy [4]4 years ago
4 0
Factor the equation: (x-7)(x+4) Solve for X: X-7=0 x+4=0 X=7 x=-4 A zero is when the function crosses the x-axis which is solved by setting the function equal to zero.
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Work out<br> a) 5 3/4- 2 1/4
xxTIMURxx [149]

Answer:

The answer is 3 1/2.

Step-by-step explanation:

-There are 2 simple ways to do this.

-The first is just subtracting 3/4 and 1/4 which equals 2/4 or 1/2.

-The second way is to turn it into an improper fraction.

-(5*4)+3=23 and (2*4)+1=9.

-23/4-9/4=14/4

-14/4=3 1/2

7 0
3 years ago
Read 2 more answers
What is the coordinate of point P on the line segment AB that is 3/4 of the distance from A to B for A(2,5) and B(6,9)?
Brut [27]

Answer:

p  is (3.71, 6.71)

Step-by-step explanation:

Given that p is at the distance of 3/4 from A to B

it mean that point p divides the line AB into 3:4 ratio.

and

if there are two points (x1,y1) and (x2,y22) which is divided by point p in the ratio m:n then

coordinates of point p (x,y) is given

p (x = (n*x1+m*x2)/m+n , y = (n*y1+m*y2)/m+n )

________________________________________________

Given the points AB

A(2,5)

B(6,9)

m:n = 3:4

thus,

p (x = (4*2+3*6)/7 , y = (4*5+3*9)/7 )

p (x = (4*2+3*6)/7 , y = (4*5+3*9)/7 )

p (x = (26/7 , y = 47/7 )

P ( x = 3.71, y = 6.71)

Thus, coordinates of point p  is (3.71, 6.71) which is  at  3/4 of the distance from A to B for A(2,5) and B(6,9)/

5 0
3 years ago
What is the main idea of the White House
Genrish500 [490]

Answer:

The White House is the solemn residence and the workplace of the President in the United States Of America. The president can also have his family there.

Step-by-step explanation:

The main motto or goal of the white house is to give and protect the fundamental rights of United States citizens

6 0
3 years ago
ABC is translated 2 units right and 1 unit down. What is the new location of point C?
Bogdan [553]

Answer:

(4,-8)

Step-by-step explanation

hope it helps

8 0
3 years ago
Read 2 more answers
I need some help with this one
Mrac [35]

Answer:

300+90+9

-45=0+40+5

Step-by-step explanation:

399-45=354

8 0
3 years ago
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