Answer:
Step-by-step explanation:
The expression in the square root should be greater than or equal to zero, because square root of a negative number does not give a real number.
First, let's write 65% as a decimal. We can do this by moving the decimal point 2 places to the left. When we do this, we will get 0.65.
Next, the word of means "multiply" so we have to multiply 0.65 by 40.
(.65) × (40) = 26.00
Therefore, 65% of 40 is 26
3x(2x - 5) = (3x - 4)(2x + 1)
6x² - 15x = 6x² + 3x - 8x - 4
6x² - 15x - 6x² - 3x + 8x = -4
-10x = -4 / : (-10)
x = 0,4
Supplementary angles have measured that add to 180. 180-81=99
Answer:
R. 25m + 10b = 400
Step-by-step explanation:
25m: $25 for time the mow the lawn
10b: $10 for every hour that they babysit their younger brother
400: They need $400 in total
+ : You need to add what they made for mowing the lawn and for babysitting.