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marusya05 [52]
3 years ago
7

12 mm 9 mm What is the length of the hypotenuse?

Mathematics
1 answer:
stepan [7]3 years ago
5 0

Step-by-step explanation:

By Pythagoras's theorem,

hypotenuse^2 = 12^2 + 9^2

hypotenuse = ±15mm (rej -15mm since hypotenuse > 0mm)

therefore, 15mm

Topic: Pythagoras theorem

If you like to venture further, do check out my insta (learntionary) where I regularly post useful math tips! Thank you!

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2b. Jill and Alice each sold 40 pieces of
Diano4ka-milaya [45]

Answer:

Jill sold more apples

1 more than Alice

Step-by-step explanation:

Jill sold 40 fruits

Alice sold 40 fruits

15% of Jill's sales is APPLES, that is:

15/100 = 0.15

0.15 * 40 = 6

Jill sold 6 apples.

Now, it is given Alice sold 5 apples.

<em>Who sold more? Of course, Jill.</em>

<em>By how much? 6 - 5 = 1 apple more</em>

7 0
4 years ago
Carys calculates the total amount E, in dollars, that she earns for working h hh hours using the equation E=10h. How many dollar
Monica [59]

if an hour is able to be split up for payment then it will be 1/10 of an hour

6 0
3 years ago
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Solve the equations for points!! <br><br> (Only 3)
jonny [76]

Answer:

-2 , -10 & -99

Step-by-step explanation:

1)

⇒ x + 6 = 4

⇒ x = 4-6

⇒ x = (-2)

2)

⇒x - (-4) = -6

⇒ x + 4 = -6

⇒ x = -6-4

⇒ x = -10

3)

⇒2(x-1) = -200

⇒ x - 1 = -200/2

⇒ x - 1 = -100

⇒ x = 1 - 100

⇒ x = (-99)

4 0
3 years ago
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Cot^2x csc^2x + 2 csc^2x –cot^2 = 2
kow [346]

Answer:

x = π/2 + πk

Step-by-step explanation:

cot² x csc² x + 2 csc² x − cot² x = 2

Multiply both sides by sin² x:

cot² x + 2 − cos² x = 2 sin² x

Add cos² x to both sides:

cot² x + 2 = 2 sin² x + cos² x

Pythagorean identity:

cot² x + 2 = sin² x + 1

Subtract 1 from both sides:

cot² x + 1 = sin² x

Pythagorean identity:

csc² x = sin² x

Multiply both sides by sin² x:

1 = sin⁴ x

Take the fourth root:

sin x = ±1

Solve for x:

x = π/2 + 2πk, 3π/2 + 2πk

Which simplifies to:

x = π/2 + πk

4 0
4 years ago
A square ceiling has a diagonal of 23 ft. Shelton wants to put molding around the perimeter of the ceiling. The molding is sold
Hatshy [7]

Answer:

Minimum 66 feet of molding that he needs.

Step-by-step explanation:

Given that a square ceiling has a diagonal of 23 ft.

If the sides of the square ceiling are 'a' feet, then applying Pythagoras Theorem we can write, a² + a² = 23²

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Now, the perimeter of the square ceiling will be 4a = 65.05 feet.

If the cost of molding along the perimeter of the ceiling is in per foot, then a minimum of 66 feet of molding that he needs. (Answer)

6 0
3 years ago
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