Tiffany612
Answered

Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Get quick and reliable solutions to your questions from a community of seasoned experts on our user-friendly platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

Help with these 2 questions please?? Check my answers.
The height of a triangle is 13 in. less than its base. If the area of the triangle is 24 in2, what is the length of the base?

3 in.
10 in.<------
16 in.
21 in.




Madison hits a tennis ball with an initial velocity of 18 m/s straight up into the air. When she hits the ball, it is 1.2 m above the ground. Which equation can be used to find the time, t, it takes for the ball to reach the ground?

–4.9t2 + 18t + 1.2 = 0
–16t2 + 18t + 1.2 = 0<-------
–4.9t2 + 1.2t + 18 = 0
–16t2 + 1.2t + 18 = 0

Sagot :

rabinshrestha41
1>
Let the base be "x"
According to the question, 

h = x - 13

A = 24 in sq.
Now,
[tex] Area of triangle = \frac{1}{2}~b~h [/tex]

[tex]24= \frac{1}{2}(x)(x-13) [/tex]

[tex]24 *2= (x)(x-13) [/tex]

[tex]48= x^{2} - 13x[/tex]

[tex]0= x^{2} - 13x -48[/tex]

Factorizing the equation,  x²  - 13x  -48, we get,

[tex]0= x^{2}+3x - 16x -48[/tex]

[tex]0= x(x+3) - 16(x+3)[/tex]

[tex]0= (x + 3)(x-16)[/tex]

NOW, using zero product property, we get,

Either,
x + 3 = 0 
     x = -3

Or,
x - 16 = 0
      x  = 16

Since, distance can't be negative, we have, x = 16 in.
So, the length of the base is 16 inches.

2>

umm...i don't know how to do it...can you post a picture of the same kind of (solved) question....i mean like an example


Thank you for your visit. We are dedicated to helping you find the information you need, whenever you need it. Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.