$MathMaster logo$

MathMaster

Home
general
30y y y 144

Question

30y - y . y = 144

137

likes

683 views

Answer to a math question 30y - y . y = 144

$Expert avatar$

4.5

92 Answers

$30y-y^{2}-144=0$

$-y^{2}+30y-144=0$

$y_{1,2}=\frac{-30\pm \sqrt{30^{2}-4(-1)(-144)}}{2(-1)}$

$y_{1,2}=\frac{-30\pm 18}{2(-1)}$

$y=\frac{-30+18}{2(-1)},y_{2}=\frac{-30-18}{2(-1)}$

$=6$

$=24$

$y=6,y=24$

Frequently asked questions (FAQs)

What is the value of sin(2π) + cos(π/3)?

+

What are the components of a unit vector in the direction of vector v = [3, 4]?

+

What is the value of arccos(cos(π/3))?

+

New questions in Mathematics

A hotel in the Algarve had to offer 1 week of vacation to one of its employees as an Easter gift in a random choice. It is known that 80 people work in this hotel, 41 of whom are Portuguese and 39 are foreign nationals. There are 14 Portuguese men and 23 foreign women. Using what you know about conditional probability, check the probability that the gift was offered to a Portuguese citizen, knowing that it was a woman.

Two events E and F are ________ if the occurrence of event E in a probability experiment does not affect the probability of event F.

How long will it take for $900 to become $5000 at an annual rate of 11.15% compounded bimonthly?

What is the appropriate measurement for the weight of an African elephant?

find x in the equation 2x-4=6

v Is the following statement a biconditional? If Shannon is watching a Tigers game, then it is on television.

Three squares have a total area of 35.25 𝑐𝑚2 . The larger square has twice the side-length of the middle-sized square. The smaller square has its side length exactly 0.5 cm smaller than the middle-sixed square. Find the side lengths of each of the three squares.

3 A tree is planted when it is 1.2 m tall. Every year its growth is 3/8 of its previous year's height. Find how tall the tree will grow.

If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)

Let v be the set of all ordered pairs of real numbers and consider the scalar addition and multiplication operations defined by: u+v=(x,y)+(s,t)=(x+s+1,y+t -two) au=a.(x,y)=(ax+a-1,ay-2a+2) It is known that this set with the operations defined above is a vector space. A) calculate u+v is au for u=(-2,3),v=(1,-2) and a=2 B) show that (0,0) #0 Suggestion find a vector W such that u+w=u C) who is the vector -u D) show that axiom A4 holds:-u+u=0

Gender and communication : Answer the question ( 1 paragraph is ok) . Please can you write about women? Compared to your other identities, how much of a role does gender play in your life? And has your own sex/gender offered you privileges or disadvantages? How so?

Write the inequality in the form of a<x<b. |x| < c^2

-6 - t / 4 = -1

the product of a 2-digit number and a 3-digit number is about 50000, what are these numbers

Emile organizes a community dance to raise funds. In addition to paying $300 to rent the room, she must rent chairs at $2 each. The quantity of chairs rented will be equal to the number of tickets sold. She sells tickets for $7 each. How much should she sell to raise money?

Find the rule that connects the first number to the second number of each pair. Apply the rule to find the missing number in the third pair. (18 is to 22) (54 is to 26) (9 is to ?)