Answer: C) All real values of x such that 
In other words, x must be 0 or smaller.
===================================================
Explanation:
The reason why is because we must make the stuff under the square root to never be negative. We must make -2x be 0 or larger.
So,
As an example, if x = -2, then -2x = -2(-2) = 4 is positive. Applying the square root to a positive number is valid.
But if x = 5, then -2x = -2*5 = -10 is under the square root, which is not allowed.
Increasing by 30% results in multiplication by 130/100, or 13/10. Setting the original amount of students to x, we write the equation:
13x/10=182
We multiply by 10 for a result of:
13x=1820
Dividing by 13, we have:
x=140
Thus, 140 students were in the club last year.
Answer:
120c
Step-by-step explanation:
7c(-5c)*(-4+6)
7c+5c*4+6
12c*10
120c
She ran 4 laps i did the math and uh yeah thats what i got
Answer:
290 cm sq.
Step-by-step explanation:
We can approximate this irregular figure as a trapezoid.
We know the area formula for a trapezoid is A = (1/2)*(base1 + base2)*height
A = (1/2)* (22 cm + 36 cm) * (10 cm)
A = (1/2) *( 58 cm)*10 cm
A = 29 cm * 10 cm
A = 290 cm sq.
