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Lerok [7]
2 years ago
12

If something is marked down 40% what expression in a new retail price

Mathematics
1 answer:
trapecia [35]2 years ago
7 0
In terms of x it would either be .60x or x-.40x
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What is the decimal that is equivalent to the expression 3 * 100 + 7 * 10 + 4 * 1 + 6 * 0.01 + 1 * 0.001
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I believe it is 0.0318
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(a) The rate that the point 8,28 represents is 3.5 cm/s since 28/8 = 3.5
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Step-by-step explanation:

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Pls answer this...its very important for me...i have an exam coming up...and this 2 questions will come up so pls help. I WILL M
tamaranim1 [39]

Answer:

a. x = 3

b. x = 3

Step-by-step explanation:

Given

\frac{4^{2x}}{4^x} = 64

(2^{2x}) = 64

Required

Find x

Solving \frac{4^{2x}}{4^x} = 64

From laws of indices;

\frac{a^{m}}{a^n} = a^{m-n}

So;

4^{2x-x} = 64

4^{x} = 64

Write 64 in base of 4

4^{x} = 4^3

From laws of indices;

if\ x^a = x^b;\ then\ a = b

So; x = 3

Solving (2^{2x}) = 64

Write 64 as a base of 2

(2^{2x}) = 2^6

if\ x^a = x^b;\ then\ a = b

2x = 6

Divide both sides by 2

\frac{2x}{2} = \frac{6}{2}

x = 3

3 0
3 years ago
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