You want to break this down.
“5 less than” means you’ll subtract 5 from something.
That something is “3 times a number.” “3 times a number” means 3•x or 3x, since we’ll use x for that unknown number.
So, “5 less than 3 times a number” means “subtract 5 from 3x”: 3x-5
“Is” means “equals”. So 3x-5= something.
7, well, that’s 7.
So “5 less than 3 times a number is 7” means ”subtract 5 from 3x and set that equal to 7.”
3x-5=7
I think it is 6 over 6 because it has a 6 for the denominator
Let the number be a
6a - 20 = 3a + 4
Group like terms
6a - 3a = 20 + 4
3a = 24
divide through by 3
a = 8
Therefore the number is 8
Answer:
7% of 150= 10.5 :)
Step-by-step explanation:
150/x=100/7
(150/x)*x=(100/7)*x - we multiply both sides of the equation by x
150=14.2857142857*x - we divide both sides of the equation by (14.2857142857) to get x
150/14.2857142857=x
10.5=x
x=10.5
now we have:
7% of 150=10.5
Answer:
7.1 miles
Step-by-step explanation:
From the park to the library is a diagonal line. We can use pythagorean theorem.
Change in y - 7
Change in x - 1
7^2 + 1^2 = x^2
(x is the distance between the library and park)
49 + 1 = x^2
50 = x^2
That's around 7.
