Answer:
5
Step-by-step explanation:
200% × x = 20. x = 10. 50% of a number = 50% × 10 = 50÷100×10 = 0.5 × 10 = 5.
Answer:
see attached
Step-by-step explanation:
A graphing calculator can show you the graph right away. Or you can plot it by hand.
Since both inequalities do <em>not</em> include the "or equal to" case, the lines they represent (y=-x-1, y=x+4) will be dotted lines.
Of course, you can read the y-intercept from the equation. (It is the constant, the value of y when x=0.) The slope is the coefficient of x, so is -1 for the line with the negative y-intercept, and +1 for the line with the positive y-intercept.
The solution to each inequality is shaded. For y < ( ), the shading is below the dotted line. For y > ( ), the shading is above the dotted line. Then the solution to both inequalities is the doubly-shaded area.
1) round to 3
2) round to 4
3) round to 7
4) round to 6
A. -6+2y
Step-by-step explanation:
-2×3-2×(-y)
multiply the numbers
-6-2×(-y)
multiplying two negatives equals a positive
-6+2y
They are right triangles so you can use the Pythagorean theorem.
A = sqrt(5^2+3^2)
A = sqrt(25+9)
A = sqrt(34) (exact answer)
As a decimal it would be: 5.8
B = 45 = sqrt( 20^2 + b^2)
B^2 = 45^2-20^2
B^2 = 2025-400
B^2 = 1625
B = sqrt(1625)
B = 5sqrt(65) exact answer
As a decimal : 40.3