A 3-foot-tall mailbox casts a shadow that is 1.8 feet long. At the same time, a nearby street lamp casts a shadow that is 12 fee
t long. How tall is the street lamp?
1 answer:
Answer:
20 feet tall
Step-by-step explanation:
If these are at the same angle, which i'm assuming they are, the following would happen:
Put length of 1 item over its shadows length equal to 2nd items length over its shadow. Put x in the place you want to find (Lamp in this case)
(3/1.8)=(x/12)
Cross multiply
36=1.8x
Divide by 1.8 on both sides
20=x
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Answer:
.........................
Answer:
x<5/2
Step-by-step explanation:
We have
2x−3<2
Add 3 to both sides.
2x−3 +3 <2 +3
which makes
2x<5
Divide both sides by 2.
2x/2 < 5/2
x<5/2
It makes your life easier.One way is by just adding a 0 after the number.
Ex 2*10 is 20 see what I mean.
kx-4=9
Move -4 to the other side. Sign changes from -4 to +4
kx-4+4=9+4
kx=13
Divide by k for kx and 13
Cross out k and k = 1.
x=13/k
Answer: x=13/k
Let j = Jake's age.
Because Mallory is 2 years older than three times Jake, Mallory's age is
3j + 2.
Answer: Mallory's age is 3j + 2
