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Novay_Z [31]
3 years ago
7

The school has arranged to have the gym walls plastered. It takes 200 pounds of lime to make one batch of plaster. Each batch of

plaster will cover 45 square yards of wall. How much lime will be needed to finish 855 square yards of wall? 21,375 pounds 3,762 pounds 38,475 pounds 3,800 pounds
Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

D or 3800

Step-by-step explanation:

Just divided 855 by 45 then multiplied 200 by 19

Please mark me brainlest

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The original price of a jacket is $68. The sale price is 30% off the original price. What is the amount off the original price?
Damm [24]
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What is the recursive rule for the sequence? 3, −1, 1/3, −1/9, ...
Hunter-Best [27]

Answer:

Step-by-step explanation:

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the recursive rule is :

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Can someone help me solve (a) and (c) pls.<br>Thanks ​
Alex777 [14]

Answer:

Area of ABCD = 959.93 units²

Step-by-step explanation:

a). By applying Sine rule in the ΔABD,

  \frac{\text{SinA}}{46}=\frac{\text{Sin}\angle{DBA}}{35}

  \frac{\text{Sin110}}{46}=\frac{\text{Sin}\angle{DBA}}{35}

 Sin∠DBA = \frac{35\times \text{Sin}(110)}{46}

 m∠DBA = \text{Sin}^{-1}(0.714983)

 m∠DBA = 45.64°

 Therefore, m∠ADB = 180° - (110° + 45.64°) = 24.36°

                  m∠ADB = 24.36°

c). Area of ABCD = Area of ΔABD + Area of ΔBCD

  Area of ΔABD = AD×BD×Sin(\frac{24.36}{2})

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                           = 339.68 units²

   Area of ΔBCD = BD×BC×Sin(\frac{59.92}{2})°

                            = 46×27×(0.4994)

                            = 620.25 units²

   Area of ABCD = 339.68 + 620.25

                            = 959.93 units²

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