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stiks02 [169]
3 years ago
6

Plzz add an explanation for it too

Mathematics
1 answer:
DIA [1.3K]3 years ago
3 0

Answer:

A     $0.02

Step-by-step explanation:

Let's solve how much does it cost to have a bulb on for an hour. ⇒ 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per ⇒ 0.1 kilowatt per hour* 0.20 = 0.02 dollars in an hour.

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Which is log x+ 6 log(x+7) written as a single logarithm.
Elina [12.6K]

Answer: option d.

Step-by-step explanation:

 To solve this problem you must keep on mind the properties of logarithms:

log(b)-log(a)=log(\frac{b}{a})\\\\log(b)+log(a)=log(ba)\\\\a*log(b)=log(b)^a

Therefore, knowing the properties, you can write the expression gven in the problem as shown below:

5logx+6log(x+7)=logx^5+log(x+7)^6=logx^5(x+7)^6

Then, the answer is the option d.

4 0
3 years ago
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3 years ago
What is the area or rectangle xbcy
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8 0
4 years ago
Mr. Bernard needs to order boxes for his 18-inch diameter "Super Pizza."
Yuliya22 [10]

Answer:

a) Circumference of the circle = 56.52 in

b) Area of the circle = 254.34 in²

Step-by-step explanation:

Mr. Bernard needs to order boxes for his 18-inch diameter "Super Pizza."

Note that:

Pizza is Circular in shape

a) What is the approximate circumference of the Super Pizza? Use 3.14 for π. Show your work.

The formula for the circumference of a circle when given that diameter = πD

Where D = Diameter of the circle = 18 in

π = 3.14

Hence,

Circumference of the circle = 3.14 × 18 in

= 56.52 in

b) What is the approximate area of the Super Pizza? Use 3.14 for π. Show your work.

The formula for the area of a circle = πr²

Radius = Diameter/2

Diameter = 18 in

Radius = 18 in/2 = 9 in

The area of the circle = 3.14 × 9²

= 254.34 in²

8 0
3 years ago
Solve for k<br><br> 5 - vk = k<br><br> show work
MissTica

Answer:

The answer to your question is   k = \frac{5}{1 + v}

Step-by-step explanation:

Equation

                            5 - vk = k

Process

1.- Add vk in both sides

                          5 - vk + vk = k + vk

2.- Simplification

                           5 = k + vk

3.- Factor k (like terms)

                           5 = k(1 + v)

4.- Divide both sides by "1 + v"

                           5 / (1 + v) = k(1 + v) / (1 + v)

5.- Simplify

                           5 / (1 + v) = K

3 0
3 years ago
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