Answer:
3m-3n
Step-by-step explanation:
We want to simplify the expression;
2m - [n - (m - 2n)].
We expand the parenthesis to obtain;
2m - (n - m + 2n)
2m - ( - m + 3n)
Expand further to get;
2m +m -3n
Combine the first two terms;
3m-3n
Answer:
The answer is D
Step-by-step explanation:
the standard equation for circle is (x －h)² ＋(y －k)² = r² which h is the x coordinate, k is the y coordinate, r is radius. In this case, both x coordinate and y coordinate are 0, so the left side of the equation is x² + y², since the radius is √249, the r² is 249. So the equation is x² + y² = 249, and the answer is D.
Hope this will help❤️
Answer:
Use Cross product Or Multiply both sides by 6 to get x alone
x/6 = 4/5
Multiplying 6 on both sides
we have
x=4/5 x 6
x=24/5 = 4.8
If the roots are r1 and r2 then the factored form is 0=a(x-r1)(x-r2)
whwere a is a constant
I don't like fractions so a=3 for now
0=3(x-4/3)(x-4)
0=3(x^2-4/3x-4x+16/3)
0=3x^2-4x-12x+16
0=3x^2-16x+16
3.25 * 2 = 6.5
v
6.5+0.5 = 7
His mother will walk 7 miles.
