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AleksAgata [21]
2 years ago
5

Work out the percentage change when a price of £20 is increased to £50

Mathematics
1 answer:
Verdich [7]2 years ago
8 0

Answer:

it is 250 percent increase

Step-by-step explanation:

it is cuz if you multiply 20 times 2 you get 40 but you need 50 so you say ok well half of 20 is ten so add a 50 percent in there if it makes sense

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What is the inverse of y=r? + 8?
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Answer:

F-1(x)=x+8

Step-by-step explanation:

What is the inverse of y=r? + 8?

I hope this help.

6 0
3 years ago
Trim earnings 28.50 tutoring for 3hours write an equation relating her earnings m to the number of hours h she tutors assuming t
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Answer:

142

Step-by-step explanation:

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5 0
3 years ago
How do you find an area of a triangle when you just have two sides and an angle?
Olenka [21]
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2 years ago
Eight sided dice can be described as two square based pyramids stuck together at
kobusy [5.1K]
It costs $3.63 more for the gold die than the gold plated die.

The volume of each half of the die is given by the formula

V=1/3s³.

This means the total volume is V = 2(1/3s³) = 2(1/3(2³)) = 16/3 = 5.33 mm³.

For the solid gold die, we know that it weighs 0.02g per mm³:

5.33(0.02) = 0.1066g

Gold costs $40.38 per gram:
40.38(0.1066) = $4.30

For the plastic die, plastic weighs 0.01 g per mm³:
0.01(5.33) = 0.0533g

Plastic costs $10 per gram:
0.0533(10) = 0.533 ≈ $0.54.

We also need to find the surface area, as it will be painted.  Each face is an equilateral triangle; the area of a triangle is given by the formula

A = 1/2bh

We need to use the Pythagorean theorem to find the height.  The height will be one leg and 1/2 of the base will be the other; the slanted side will be the hypotenuse:

h² + (1/2(2))² = 2²
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h² = 3
h = √3

The area of the triangle would then be A = 1/2bh = 1/2(2)(√3) = √3.  There are 8 such faces on the die, so the total surface area would be 8√3 = 13.86mm².

Paint costs $0.01 per mm²:
13.86(0.01) = 0.1386 ≈ $0.14

Together the cost for the plastic is 0.14+0.53 = $0.67.

The difference between it and the cost for the gold die is 4.30 - 0.67 = $3.63.
5 0
2 years ago
Find the quotient and reminder: 2,697/12
Lelechka [254]

Answer:

224 with a remainder of 9

4 0
2 years ago
Read 2 more answers
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