Register
{20x}^(2) + 7x - 49 Please solve for the value of x with explanation.​
84.6k views
4 votes

{20x}^(2) + 7x - 49
Please solve for the value of x with explanation.​

User Noober
by
6.1k points

1 Answer

4 votes


{20x}^(2) + 7x - 49 = 0 \\ D = {7}^(2) - 4 * 20 * ( - 49) = 3969 = {63}^(2) \\ x_1 = ( - 7 + 63)/(40) = 1.4 \\ x_2 = ( - 7 - 63)/(40) = - 1.75

User Delevoye Guillaume
by
5.6k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.9m questions

7.7m answers

Other Questions

Solve for y in terms of x. 2/3y - 4 = x y = x + 6 y = -x + 4 y = -x + 6 y = x + 4
Aliyah has $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
Use the normal model ​n(11371137​,9696​) for the weights of steers. ​a) what weight represents the 3737thth ​percentile? ​b) what weight represents the 9999thth ​percentile? ​c) what's the iqr of the weights
Evaluate a + b when a = –16.2 and b = –11.4 A. –27.6 B. –4.8 C. 4.8 D. 27.6
What is the value of x? (-4) - x = 5
Link Copied!