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statuscvo [17]
1 year ago
8

Nancy Wallin has just purchased a new house that is in need of new flooring. The cost of Pergo Select Helsinki Birch laminate fl

ooring is $ 6.51 per square foot if Nancy installs the flooring herself or $ 8.51 per square foot if she has the flooring installed by the flooring company.
use the measurements given on the floor plans of​ Nancy's house to determine the cost for the flooring in the​ living/dining room if
​a) Nancy installs it herself.
​b) Nancy has it installed by the flooring company.

Mathematics
1 answer:
Yuri [45]1 year ago
6 0

Answer:

<u>Part A: Cost for the flooring is $ 4,231.50</u>

<u>Part B: Cost for the flooring is $ 5,531.50</u>

Step-by-step explanation:

Step 1:

Let's calculate the area of the living/dining room, this way:

Area = 26 * 25

Area = 650 ft²

Step 2:

Let's calculate the cost of the flooring if Nancy installs it:

Cost = $ 6.51 * Area of the living/dining room

Cost = 6.51 * 650

<u>Cost = $ 4,231.50</u>

Step 3:

Let's calculate the cost of the flooring if the flooring company installs it:

Cost = $ 8.51 * Area of the living/dining room

Cost = 8.51 * 650

<u>Cost = $ 5,531.50</u>

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In △ABC,c=71, m∠B=123°, and a=65. Find b.<br><br> A. 101.5<br> B. 117.8<br> C. 123.0<br> D. 119.6
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Answer:

Option D

Step-by-step explanation:

The questions which involve calculating the angles and the sides of a triangle either require the sine rule or the cosine rule. In this question, the two sides that are given are adjacent to each other the given angle is the included angle. This means that the angle B is formed by the intersection of the lines a and c. Therefore, cosine rule will be used to calculate the length of b. The cosine rule is:

b^2 = a^2 + c^2 - 2*a*c*cos(B).

The question specifies that c=71, B=123°, and a=65. Plugging in the values:

b^2 = 65^2 + 71^2 - 2(65)(71)*cos(123°).

Simplifying gives:

b^2 = 14293.0182932.

Taking square root on the both sides gives b = 119.6 (rounded to the one decimal place).

This means that the Option D is the correct choice!!!

8 0
2 years ago
ants have 6 legs. Elena and Andre write equations showing the proportional relationship between the number of ant legs L Elena w
barxatty [35]

Answer:

Neither are correct.

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Answer:

c. 2

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Answer:

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