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2 years ago

find the value of x of given figure and solve this question step by step plzz help question number D

Mathematics

1 answer:

IgorLugansk [536]2 years ago

6 0

Answer:

The value of x is 15 cm

Step-by-step explanation:

#(d)

In Δ BDC

∵ ∠D is a right angle

∴ BC is the hypotenuse

∴ BD and DC are the legs of the right angle

→ By using Pythagoras Theorem

∵ (BC)² = (BD)² + (DC)²

∵ BD = 10 cm

∵ DC = 2√11 cm

→ Substitute them in the equation above

∴ (BC)² = (10)² +(2√11)² = 100 + 44 = 144

→ Take √ for both sides

∴ BC = 12 cm

In Δ ABC

∵ ∠B is a right angle

∴ AC is the hypotenuse

∴ AB and BC are the legs of the right angle

→ By using Pythagoras Theorem

∵ (AC)² = (AB)² + (BC)²

∵ AB = 9 cm

∵ BC = 12 cm

∵ AC = x

→ Substitute them in the equation above

∴ x² = (9)² +(12)² = 81 + 144 = 225

→ Take √ for both sides

∴ x = 15 cm

∴ The value of x is 15 cm

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<u>Solution-</u>

The given function is,

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3 years ago

Wanda and Kyle want to compare the worth of their baseball cards. Wanda has 80 baseball cards and Kyle has 110 baseball cards. S

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Answer:

Mean

Step-by-step explanation:

If Wanda has 80 baseball cards and Kyle has 110 baseball cards. Given that they know the total value of all their individual base ball cards, the worth of each baseball card will be derived by dividing the Total Worth of the cards by the number of cards. This is an example of Mean. Therefore they should use Mean to compare the worth of the cards.

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3 years ago

find the value of x of given figure and solve this question step by step plzz help question number D​

find the value of x of given figure and solve this question step by step plzz help question number D