Answer:different of two squares states that
If a²-b² is given then
a²-b²=(a+b)(a-b)
Now to answer the question
(x+2)²-(x)²=68
(x+2+x)((x+2)-x)=68
(2x+2)(x+2-x)=68
(2x+2)(2)=68
Divide both sides by 2
{(2x+2)(2)}÷ 2 = 68/2
2x+2= 34
Collect like terms
2x=34-2
2x=32
Divide both sides by 2
2x/2 =32/2
x=16
Hence
x=16
x+2=16+2=18
The two consecutive even integer are 16 and 18
Step-by-step explanation:
Answer:
[see below]
Step-by-step explanation:
Use the Pythagorean Theorem.
'c' will be the hypotenuse.
The hypotenuse is 15 cm. One of the legs is 5 cm.
14.1421356237 ≈ 14.1
The other leg should be about 14.1 cm.
Hope this helps.
A. No. of oranges in layer no. i = i*i
b. No oranges reqired for 10 layers = ∑i² where i=0 and i-->10
= 385
Answer:
5
Step-by-step explanation:
7632/14=545.1428571429
Answer:
(a) $1.48
(b) $0.0051 . . . . slightly more than 1/2¢
Step-by-step explanation:
cost = (kW)(hours)(cost/kWh)
(a) cost = (0.040 kW)(24 h/da)(14 da/wk)($0.11/kWh) ≈ $1.478
The cost of leaving the porch light on is about $1.48.
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(b) cost = (0.925 kW)(3 min)/(60 min/h)($0.11/kWh) ≈ $0.00509
The cost of toasting bread is about 0.5 cents.
