How do you solve x + 1/4x = 15.

Answers

Answer 1
Answer: x + 1/4x = 15
4/4x + 1/4x = 15
5/4x = 15
5x = 60
x = 12
Answer 2
Answer:
x+(1/4)*x = 15 // - 15

x+(1/4)*x-15 = 0

5/4*x-15 = 0 // + 15

5/4*x = 15 // : 5/4

x = 15/5/4

x = 12

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Which of the following statements will be true about the product of 6 and 1 3/4?The product will be less than 6.
The product will be equal to 6.
The product will be greater than 6.

Answers

The product will be greater than 6

Answer:

i think greater

Step-by-step explanation:

Rachel told mariana that if she rolls two number cubes 100 times she will never get aproduct of 23 mariana toldbher that she cant be sure. whos right? explain

Answers

rachel is right because nothing under the number 100 can be multiplied to get the product of 23 

Answer:

Rachel is right.

Step-by-step explanation:

You cannot get over 12 when you roll two regular dice. 6 Is the highest number, so if you roll two 6's, the highest you can roll is a 12.

PLEASE HELP ME THANK YOU SO MUCH!How far away can a person live from a radio station and hear its broadcast if the signal covers a circular area of 40,000 square miles? Write your answer as a whole number.
IM MARKING BRAINLIEST!! :D

Answers

Answer:

About 113 miles away.

Step-by-step explanation:

πr^2=40000

40000/π=12732.3954.

sqrt of 12732.3954 is 112.837916 which is about 113

Solve the equation 36x^2 25=0

Answers

The equation 36x^2 + 25 = 0 possesses no real solutions; however, it yields two complex roots: x = (5/6)i and x = -(5/6)i.

The equation provided, 36x^2 + 25 = 0, is a quadratic equation in one variable, x. To solve it, we'll first isolate the x^2 term:

36x^2 = -25

Next, we'll divide both sides by 36:

x^2 = -25/36

Taking the square root of both sides, we get:

x = ±√(-25/36)

Since the square root of a negative number is imaginary, there are no real solutions to this equation. This means that the equation 36x^2 + 25 = 0 has no real roots, but it does have complex roots in the form of x = ±(5/6)i, where i is the imaginary unit.

The equation 36x^2 + 25 = 0 has no real solutions, but it does have two complex solutions: x = (5/6)i and x = -(5/6)i.

To learn more about variable

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Would assume it to be 36x² - 25 = 0

36x² - 25 = 0

(6x)² - 5² = 0

(6x + 5)(6x - 5) = 0         By difference of two squares.

6x + 5 = 0           or         6x - 5 = 0

6x = -5                             6x = 5

x = -5/6                              x = 5/6

x = +5/6   or - 5/6

A time/motion word problem"A plane leaves Denver heading due north at 500 mph.  Simultaneously, another plane leaves Denver traveling due east at 1200 mph.  After how many minutes will the planes be 650 miles apart?"

I know the answer is 30, but I have no clue how to solve the problem itself

Answers

The two planes are flying on the two legs of a right triangle.
The straight distance between them is the hypotenuse of the triangle.

Since the speeds are in mph, let's work the time in hours.
Call the time 'H' that we're looking for.
It's the number of hours after they both take off that they're 650 miles apart.

After 'H' hours, the first plane has gone 500H miles north.
After 'H' hours, the second plane has gone 1200H miles east.
After 'H' hours, they are 650 miles apart.

Do you remember this for a right triangle ? ==>    A² + B² = C²

(500H)² + (1200H)² = (650)²

250,000H² + 1,440,000H² = 422,500

1,690,000 H² = 422,500

H² = (422,500) / (1,690,000) = 0.25

H = √0.25 = 1/2 hour = 30 minutes
x^2=500^2+1200^2\n\nx^2=250000+1440000\ \ \ \Rightarrow\ \ \ \ x^2=1690000\ \ \ \Rightarrow\ \ \ \ x=1300\ [mph]\n\nthe\ distance=650\ miles\n\nthe\ speed= (the\ distance)/(the\ time) \ \ \ \Rightarrow\ \ \ 1300\ [mph]= (650\ [miles])/(the\ time)\n\nthe\ time= (650)/(1300) \ [hr]=0.5\ [hr]=30\ [min]\n\nAns.\ after\ 30\ minutes.

Here is a picture of my math problem.

Answers

percent means parts out of 100
1.2%=1.2/100=12/1000=6/500=3/250
1.2% is (1.2)/100 which equals 0.012

0.012 as a fraction is:

12/1000=6/500=3/250