Answer:
13 ft
Step-by-step explanation:
To find the perimeter of a rectangle you have to add the four sides of the rectangle, you have two sides and know the perimeter, this will help you find the length of her room. 12 ft is the width, add 12+12 and you have 24. The perimeter is 50 so subtract 24 from 50 and you have 26 that is the length times two, so divide 26 by 2. Now you have 13, so the length of her room is 13 feet.
Hope you understand now! :)
To solve this, plug 2b+1 in for a. :
4(2b+1)-5. Solve for b.
First use the distributive property:
8b+4-5=?
Combine like terms:
8b-1=?
Solve for b.
add 1 to both sides.
8b=1
Divide both sides by 8.
b=1/8
First we know that:
AB+BC=AC
now , since B is the midpoint of AC, this means that AB=BC
therefore,
AB+BC=AC can also be written as
AB+AB=AC
3x-1+3x-1=8x-20
6x-2=8x-20
-2+20=8x-6x
18=2x
x=9
therefore:
AB=3(9)-1=27-1=26
AC=8(9)-20=52
BC=AB=26
Answer:
15/56
Step-by-step explanation:
To get the answer, you find the least common denominator of 4 and 7 which is 28. 1/4 is equal to 7/28. 2/7 is equal to 8/28. if you subtract 7/28 from 8/28, you get one twenty-eighth (1/28). Half of 1/28 is 1/56. To add 1/56 and 7/28, multiply the numerator and denominator of 7/28 by 2. You will get 14/56. Add 14/56 and 1/56 and the answer is 15/56. I'm pretty sure this is the answer. Thanks!
The slopes of both lines are equal so they're parallel.
