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miss Akunina [59]
3 years ago
7

Simplify the expression:3(7r + 1) =​

Mathematics
2 answers:
kozerog [31]3 years ago
8 0

Answer:

21r +3

Step-by-step explanation:

3(7r + 1) =​

Distribute

3*7r +3*1

21r +3

Andreas93 [3]3 years ago
4 0

Answer:

21r+3

Step-by-step explanation:

3(7r + 1)

Use the distributive property.

This property is normally used when the 2 numbers inside of the parentheses can not be added easily.

3*7r+3*1

21r+3

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a_{5}=a+4d=11\\a_{10}=a+9d=41

Solve the above equations,

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First term is -13.

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2 years ago
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Which statement is correct when a scatterplot is constructed? A.The independent variable is the input variable and should be rep
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Answer:-  A.The independent variable is the input variable and should be represented by the x-axis.


Explanation:-

A. Correct.

B. Not correct.

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D. Not correct.

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3 years ago
Rusty is 5.75 feet tall and casts a 7 foot shadow find the angle of elevation from the tip of the shadow to the top of Rusty’s h
11Alexandr11 [23.1K]

Answer:

Ф = 39.4 degrees

Step-by-step explanation:

The ratio 5.75 / 7 is the tangent of the angle of elevation.  Using the inverse tangent function on a calculator returns Ф = 39.4 degrees.

5 0
3 years ago
Convert 34.0 dm to km. Show all work.
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Step-by-step explanation:

Convert 34 Decimeters to Kilometers (dm to km) with our conversion calculator and conversion tables. To convert 34 dm to km use direct conversion formula below.

34 dm = 0.0034 km.

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1. Lucy has a jewelry business. To make a certain necklace, she spends $3.38 on materials and $5.57 on labor. She then sells the
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3 years ago
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