3 years ago

If she sells her maths book for 10€ at a loss of 60% how much did she originally pay for the book

Mathematics

1 answer:

spin [16.1K]3 years ago

8 0

Answer:

She originally paid 25 pounds

Step-by-step explanation:

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Solve the equation x³ − 5 = 59

In-s [12.5K]

Answer:

4 = x

Step-by-step explanation:

x³ - 5 = 59 Add five to both sides of the equation.

x³ = 64 Now find the cubed root of 64

∛64 = 4

x = 4

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3 years ago

If you spend $3 on 6 apples what is the unit rate? Or in other words, what is the cost of each apple?

Andrew [12]

Each apple costs .50 cents :D

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3 years ago

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What is the length of AC¯¯¯¯¯

Nutka1998 [239]

Answer: AC=12 cm

Step-by-step explanation:

To solve this problem you must apply the law of sines, as you can see below:

$\frac{a}{sinA}=\frac{b}{sinB}$

Where:

a=13

A=85.2°

B=71.6°

Therefore, you must solve for b, then, you obtain that the lenght AC asked in the problem above is:

$b={sinB}*\frac{a}{sinA}\\b=\frac{sin(71.6)*13}{sin(85.2)}\\b=12$

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3 years ago

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Which choice is equal to the fraction below?<br> 8/9<br> A. 0.888888....<br> B. 0.8<br> C. 0.888

77julia77 [94]

Answer:

8/9 becauseits a fraction

3 0

3 years ago

If f(x) = 5x, what is f–1(x)?

Verdich [7]

We are given f(x) = 5x
and we are to find inverse of f(x).

Step 1:
Replace f(x) by y.
So,

y = 5x

Step 2:
Isolate x
So,

x = y/5

Step 3:
Replace x by f'(y)
So,

f'(y) = y/5

Step 4:
Replace all occurrences of y by x.
So,

f'(x) = x/5

Therefore, the inverse of f(x) = 5x is f'(x) = x/5

7 0

4 years ago