Answer:
y=9.25
Step-by-step explanation:
1. Plug in x=0.3 into the equation.
5(0.3)+2y=20
2. Simplify
1.5+2y=20
2y=18.5
3. Isolate y on the left side of the equation by dividing by 2 on both sides.
y=9.25
Answer:
6x. The coefficient is 6.
Step-by-step explanation:
area = L x W
144 = 9 x X
144/9 = 16
so rectangle is 9 x 16
diagonal = Square root of 9^2 + 16^2
squareroot( 81 + 256) = sqrt(337) = 18.357 = 18.36 feet
the question in English
Juan has blue cubes with a 55 mm edge and red cubes with a 45 mm edge. He stacks them in two columns, one of each color; he wants the two columns to be the same height. How many cubes does he need, as a minimum, of each color?
Let
x---------> the number of blue cubes
y--------> the number of red cubes
we know that
Juan wants that the two columns to be the same height
so

solve for y

I proceed to calculate a table, assuming values of x to calculate the value of y. When the values of x and y are whole numbers, I will have found the solution.
the table in the attached figure
therefore
<u>the answer is</u>
9 blue cubes
11 red cubes