Answer:
2(3-x)-12+4x
6-x-12+4x
6-x-8x
6+8x =
14x
Step-by-step explanation:
The total surface area of this prism is 480.
Divide 22,500 by 30,000 and multiply by 100 as follows:
The constant is "4.5 miles per hour", or whatever the actual units are.
Answer:
3. PR=51
4. FE=28
Step-by-step explanation:
3. since the two triangles are similar, set up a proportion:
x+8/3x-9=24/28
*cross multiply*:
28(x+8)=24(3x-9)
28x+224=72x-216
44x=440
x=20
to find PR:
PR=3x-9
PR=3(20)-9
PR=51
4. same here:
39/4x+2=42/5x-2
39(5x-2)=42(4x+2)
195x-78=168x+84
27x=162
x=6
to find FE:
FE=5x-2
FE=5(6)-2
FE=28
