7) Three out of twelve students will make the baseball team. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination n = ;r = 8) Three out of twelve students will be chosen as the catcher, pitcher, and 3rd baseman. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination ;r = 9) Three trumpet players out of six are chosen to play. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination n = ;r= 10) Three trumpet players out of six are chosen for 1st chair, 2nd chair, and 3rd chair. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination n = ;r= 11) Five out of seven patients are called to remind them of their appointment. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination n = ;r =. 12) Five out of seven patients are called to schedule a specific appointment time. Circle: Order Matters / Order Doesn't Matter Circle: Permutation / Combination n = ;r =

Q: ecimal:

A: From triangle BDC , BD=18mm,∠DAB=45°,∠DCB=αBA=dAC=b

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A: Cos(B) = ?

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A: Let's solve.

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A:

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A: We will use the given facts to establish the congruence between two triangles.

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.