Simplify √80 - 2√45
1 answer:
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Answer:
You save $0.008 per load if you buy the 15-pound box.
Step-by-step explanation:
IN 5 POUND BOX
Here, 5 pound box can wash 20 loads
Also, 5 pound box costs $3.50
⇒ The cost of doing 20 loads = $3.50
⇒ The cost of 1 load =
So, the cost of laundering 1 load here = $0.175
IN 15 POUND BOX
Here, 15 ( = 5 x 3) pound box can wash 20 x 3 = 60 loads
Also, 15 pound box costs $10.00
⇒ The cost of doing 60 loads = $10.00
⇒ The cost of 1 load =
So, the cost of laundering 1 load here = $0.167
Now, Savings = Cost per load in 5 pound box - Cost of 1 load in 15 pound
= $0.175 - $0.167
= $0.008
Hence, you save $0.008 per load if you buy the 15-pound box.
Answer:
x ≈ 56°
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = bh ( b is the base and h the height )
Here b = 8 and A = 48, thus
× 8 × h = 48, that is
4h = 48 ( divide both sides by 4 )
h = 12
Using the tangent ratio in the right triangle
tan x = =
, thus
x = (
) ≈ 56° ( to the nearest degree )