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Korvikt [17]
3 years ago
11

The library is to be given 7 books as a gift. The books will be selected from a list of 15 titles. If each book selected must ha

ve a different title, how many possible selections are there?
Mathematics
1 answer:
Elanso [62]3 years ago
5 0
If each book selected must have a different title, THERE ARE 15 POSSIBLE SELECTIONS.
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If y varies directly as x, and y = 42 as x = 6, find y for the x-value 3
mojhsa [17]
Y=42  Y=?
X=6    X=3

cross multiply
so 42times3=6timesY
126=6Y
Y=126 divided by 6
  =21
3 0
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Can someone please help me?
Kaylis [27]

Answer:

none because they all correlate with each other and there are no obvious anomalies

Step-by-step explanation:

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What shape is a rhombus related to and why​
Ksju [112]
A rhombus is related to a “Parallelogram”

Why? - because it fulfills the requirements of a parallelogram: a quadrilateral with two pairs of parallel sides. It goes above and beyond that to also have four equal-length sides, but it is still a type of parallelogram.

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8 0
3 years ago
Of video game that originally cost $25.99 is on sale for 50% off if you have $14 would you have enough money to buy the video ga
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3 0
3 years ago
Question 1
Alexxx [7]

Answer:

Water needed for pool = 486 cubic feet

Plastic liner required for the pool = 298.3 feet

Step-by-step explanation:

Top view of the pool is a composite figure, having one rectangle and a trapezoid.

1). Water needed for the pool = volume of the pool

Volume of the pool = Area of the base × Depth

                               = (Area of the rectangle + Area of the trapezoid)× depth  

Area of the trapezoid = \frac{1}{2}(b_{1}+b_{2})\times h

                                    = \frac{1}{2}(11+9)\times (12-1.5)

                                    = 105 ft²

Area of the rectangle = Length × width

                                    = 11 × 1.5

                                    = 16.5 ft²

Now, volume of the pool = (105 + 16.5) × 4

                                          = 121.5 × 4

                                          = 486 cubic feet

b). Liner required = surface area of the pool excluding top

                             = Surface area of the walls + Area of the pool base

                             = (Perimeter of the pool) × depth + area of the base

                             = (12 + 11 + 1.5 + 10.7 + 9)×4 + 121.5

                             = 176.8 + 121.5

                             = 298.3 square feet

Therefore, amount of water required = 486 cubic feet

liner needed = 298.3 square feet                                  

8 0
3 years ago
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