PLEASE HELP 15 points for brainliest! What is the solution of n^2-49=0
b7
c.+/-7
d. no solution
2. What is the solution of x^2+64=0
a.-5
b.8
c.+/-8
d. no solution
3. what is the side length of a square with an area of 144x^2
a.12
b.12x
c.+/-12x
d. no solution
Answer: The correct option are (1). c, (2). d and (3). (b).
Step-by-step explanation: The calculations are as follows:
(1) We are to find the solution of the following quadratic equation:
We have
Thus, the correct option is (c).
(2) We are to find the solution of the following quadratic equation:
We have
Since there is no real number whose square is negative, so this equation has no solution.
Thus, the correct option is (d). no solution.
(3) We are given to find the side length of a square with an area of 144x².
Let, 'a' denotes the side length of the square.
Then,
Since the length of the side cannot be negative, so the side length is 12x.
Thus, (b) is the correct option.
The correct option are (1). c, (2). d and (3). (b).
Answer:
dollar: 14
quarter: 12
Step-by-step explanation:
d = dollar
q = quarter
d+q=26
26 - q + q/4 = 17
q = 12
d = 26 - 12 = 14
Answer:
She ordered 4 toppings.
Step-by-step explanation:
7.5+1.35x=12.90
1.35x=12.9-7.5
1.35x=5.4
x=5.4/1.35
x=4
Answer:
Any equation of a line having a slope of 1/2.
Step-by-step explanation:
It appears that the question gives answer choices and this problem could have many solutions, but parallel lines have equal slopes. The slope of this line is 1/2 since it is in y=mx+b form where m is the slope. So a few examples of equations of lines parallel to the given equation would be y = 1/2x - 5 or y = 1/2x + 10 etc.