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sweet-ann [11.9K]
3 years ago
8

There are 12 inches in a foot. Which expressions describe how many inches are in 4 feet? Check all that apply.

Mathematics
1 answer:
mr Goodwill [35]3 years ago
3 0
12 to the 4th power which is 12×12×12×12 which will be equal to 20,736 in 4 ft
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Solve the following equation 6(z-2)+4=10<br> A.z=2<br> B.z=3<br> C.z=-3<br> D.z=-4
seropon [69]
6z - 12 + 4 = 10
6z -8 = 10
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z = 3
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3 years ago
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Use sigma notation to represent the sum of a geometric series with a first term of 3 and a common ratio of . A. B. C. D.
maksim [4K]

Answer:

\Sigma_{k=1}^{n}[3(\frac{10}{9} )^{k-1}]

Step-by-step explanation:

A geometric sequence is a list of numbers having a common ratio. Each term after the first is gotten by multiplying the previous one by the common ratio.

The first term is denoted by a and the common ratio is denoted by r.

A geometric sequence has the form:

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Therefore the sum of the first n terms is:

\Sigma_{k=1}^{n}(ar^{k-1})

Given a geometric series with a first term of 3 and a common ratio of 10/9, the sum of the first n terms is:

\Sigma_{k=1}^{n}[3(\frac{10}{9} )^{k-1}]

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3 years ago
Solving by the substitution method<br> y=3x+7<br> y-5x+8
Sveta_85 [38]
3x+7-5x=8
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6 0
3 years ago
Trigonometry
Nadusha1986 [10]

55° is equal to 0.9599 radians.  

Step-by-step explanation:  

Step 1:  

If an angle is represented in degrees, it will be of the form x°.  

If an angle is represented in radians, it will be of the form \frac{\pi}{x}radians.  

To convert degrees to radians, we multiply the degree measure by \frac{\pi}{180}.

For the conversion of degrees to radians,

the degrees in radians = (given value in degrees)(\frac{\pi}{180}).

Step 2:

To convert 50°,  

55\left(\frac{\pi}{180}\right)=\frac{55\pi}{180}.

0.3055 (\pi) =0.9599 radians.

So 55° is equal to 0.9599 radians.

7 0
3 years ago
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If someone could get both it would be greatly appreciated
Irina-Kira [14]
The answer to your question is 8.6
7 0
3 years ago
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