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3 years ago

Mathematics

2 answers:

Eva8 [605]3 years ago

6 0

Answer:

$24

Step-by-step explanation:

y = total cost x=each addition pound or part of a pound

y = 8 + 2x

Substitute the value of x in. (8 because it is still 2 dollars more for the 0.4)

y = 8 + 2(8)

Solve

Total cost = $24

Anestetic [448]3 years ago

3 0

Answer:

5 pounds

Step-by-step explanation:

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4 years ago

Richard simplified an expression in three steps, as shown:

soldi70 [24.7K]

Answer:

Step 2 because Richard multiply the powers of same base in denominator instead adding powers of same base.

Step-by-step explanation:

We are given that Richard simplified an expression in threes steps

We have to find the incorrect step in simplification of Richard

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$\frac{x^{-4}y^2}{yx^2\cdot x^2y^{-4}}^{3}=\frac{x^{-12}y^6}{y^3x^6\cdot x^6y^{-12}}$

Step 2:The exponents in the denominator are multiplied

$\frac{x^{-12}y^6}{y^3x^6\cdot x^6 y^{-12}}=\frac{x^{-12}y^6}{x^{12}y^{-9}}$

Step 3:The exponents of the same base are subtracted during division

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Richard makes mistake in step 2 when we multiply then power of same base should be added but Richard multiply the powers of same base in denominator.

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4 years ago

Factor ab + bc + b2 + ac.

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3 years ago

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3 years ago

By selling a watch in Rs 150 and Rs 200 loss and profit are happened

Travka [436]

Answer:

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Step-by-step explanation:

Suppose the cost is x and at Rs150 the loss is 150-x (this should be a negative number).

At Rs200, the profit is 200-x.

So we have an equation: minus 150 minus x is equal to 200 minus x.

To solve the equation, the cost price X is Rs175.

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3 years ago

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