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PSYCHO15rus [73]
3 years ago
11

Multiply (b+3)*(a+7)

Mathematics
2 answers:
mestny [16]3 years ago
6 0

Answer:

ba+7b+3a+21

Step-by-step explanation:

Use the FOIL method: (a+b)*(c+d) = ac+ad+bc+bd(a+b)(c+d )= ac+ad+bc+bd.

tamaranim1 [39]3 years ago
4 0

ba+7a=7. use foil method

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Step-by-step explanation:

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a contractor charges $1200 for 100 square feet of roofing installed. at this rate, how much does it cost to have 1100 square fee
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If it cost $1200 to install 100 square feet of roofing, then it will cost $13200 to have 1100 square feet installed.

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In the diagram, VZ/YZ=WZ/XZ. To prove that △VWZ ~ △YXZ by the SAS similarity theorem, which other sides or angles should be used
Vitek1552 [10]

Answer:

The angles \angle VZW\cong \angle YZX are used to prove the similarity of triangles VWZ and YXZ.

Step-by-step explanation:

Given information: \frac{VZ}{YZ}=\frac{WZ}{XZ}

Two triangles are called congruent if their corresponding sides are in same proportion or the corresponding angles are same.

If two corresponding sides of triangle have same proportion and their inclined angle is same, then by SAS rule of similarity both triangles are similar.

From the given figure it is noticed that the ∠VZW and ∠YZX are vertically opposite angles. The vertically opposite angles are always equal.

\angle VZW=\angle YZX                   (Vertically opposite angles)

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By SAS rule of similarity

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3 years ago
Read 2 more answers
HELP ASAP!!!!!!!!!!
chubhunter [2.5K]

Answer:

7.5

Step-by-step explanation:

\sqrt{0\\.3} = 0.5477225575

Multiply it by 5

= 2.738612788

Square it

7.5 ft^{2}

Hope this helped. :)

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