Answer:
140 feet.
Step-by-step explanation:
Given that size of the playground is 30 foot by 40 foot.
That means length L = 30 foot
Width W = 40 foot.
Now we need to find the lenght of the fence that is needed for the playground. Fencing is done on the sides of the playground so basically we are going to find the perimeter.
which can be found using formula
perimeter = 2(L+W)
perimeter = 2(30+40)
perimeter = 2(70)
perimeter = 140
Hence total fence needed is 140 feet.
A line perpendicular to y = -2x + 5 will have an equation in the form of:
y = (1/2)x + b
Since the graph must intersect (-2,9), we plug in this point to solve for b.
9 = (1/2)*(-2) + b
9 = -1 + b
10 = b
So the equation is:
y = (1/2)x + 10
The answer is A.
Answer:
12n-17
Step-by-step explanation:
add like terms: 9n+3n and -16-1
Given:
3 times x plus 4 is greater than or equal to 4 times the sum of x and 1.
To find:
The inequality for the given statement and solution of the inequality.
Solution:
4 times the sum means a distributive property problem.
Now,
3 times x : 3x
3 times x plus 4 : 3x+4
Greater than or equal to : ≥
4 times the sum of x and 1 : 4(x+1)
So, the inequality is
Using distributive property, we get
Isolate variable terms.
It can be written as
Therefore, the required inequality is and the solution is .
No. You can only add variables that have the same exponents. Also, during addition of variables with the exponent, you do not add the exponents.