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2 years ago

During a sale, fidget spinners 1/4 off the regular price. If a spinner regularly costs 5.90, what is the sale price

Mathematics

1 answer:

garik1379 [7]2 years ago

8 0

price - (1/4)×price = price×(1 - 1/4) = (3/4)×price

... = (3/4)×5.90 = 4.425 ≈ 4.43 . . . . . sale price

_____

The sale price could be 4.42 if the discount is rounded up, rather than the price being rounded up. If you first compute the discount as (1/4)×5.90 = 1.475 ≈ 1.48, then the half-penny goes to the customer, not the shop-keeper.

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3 years ago

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3. The figure below is a composite shape that consists of a semicircle and an equilateral triangle (triangle

Ivenika [448]

Answer:

See explanation below

Step-by-step explanation:

Area = Area of triangle + Area of the semi circle

Area of triangle = 1/2bh

Area of triangle = 1/2 *(5/2)(4)

Area of triangle = 1/2(2.5)*4

Area of triangle = 2 * 2.5

Area of triangle = 5cm^2

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For the perimeter

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2 years ago

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Given:

BD is parallel to XY.

One of the angle is 85°

To find:

The value of y.

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Parallel lines BD and XY cut by a transversal line.

Angle y and 85° are alternate interior angles.

Alternate interior angle theorem:

If two parallel lines are cut by a transversal line, then the pairs of alternate interior angles are congruent.

⇒ y = 85°

The value of y is 85.

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