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Ivanshal [37]
4 years ago
11

Write a mathematical expression for: the sum of twice a number n and 20.

Mathematics
2 answers:
navik [9.2K]4 years ago
8 0
2n + 20

Twice means to multiply by two
Sum means to add
faust18 [17]4 years ago
5 0
I belive is B hope that helped
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Find the slope of the line passing through the points (-7, -4) and (8,8).
lozanna [386]

Answer:

<u>Hope its work for you</u>

Step-by-step explanation:

As we know that,

<h2>slope=m=(Y2-Y1)/(X2-X1) </h2>

As given values

take,   (X1,Y1)=(-7,-4)

           (X2-Y2)=(8,8)

hence   X1=-7  ,  Y1= -4   ,  X2=8  , Y2= 8

putt the values in the above equation of slope we get ,

m=(8-(-4))/(8-(-7)

<h2><u>m=12/15    Ans</u></h2>

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3 years ago
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Answer:

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A library has 300 feet of shelves for books. The library will increase the
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3 years ago
Unit 1 geometry basics quiz 1-3 angle measures and relationships
ASHA 777 [7]

Answer/Step-by-step explanation:

1. Side CD and side DG meet at endpoint D to form <4. Therefore, the sides of <4 are:

Side CD and side DG.

2. Vertex of <2 is the endpoint at which two sides meet to form <2.

Vertex of <2 is D.

3. Another name for <3 is <EDG

4. <5 is less than 90°. Therefore, <5 can be classified as an acute angle.

5. <CDE is less than 180° but greater than 90°. Therefore, <CDE is classified as an obtuse angle.

6. m<5 = 42°

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m<CDF = ?

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42° + 117° = m<CDF (Substitution)

159° = m<CDF

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m<FDG = right angle = 90°

m<3 + m<FDE = m<FDG (Angle addition postulate)

73° + m<FDE = 90° (Substitution)

73° + m<FDE - 73° = 90° - 73°

m<FDE = 17°

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3 years ago
Do you pay $3.694 a gallon of gasoline this is 90% of the price of a gallon of gasoline one year ago what was the price of a gal
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Price of gallon of gasoline one year ago is $ 4.1

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