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If a= b^2/3 and b= c^3/4; what is the relation between a and c?

Lorico [155]

Answer: a = c^(1/2) which is the first answer choice of the list

Work Shown:

a = b^(2/3) ... given equation

a = (c^(3/4))^(2/3) ... replace b with c^(3/4)

a = c^((3/4)*(2/3)) .... multiply exponents

a = c^(1/2) .... Simplify; note the 3's cancel, also 2/4 turns into 1/2

6 0

3 years ago

the cost of annual tution design at a university increased from 10,500 to $11,300. what is the percent increase in tution to the

tangare [24]

For this case we can make the following rule of three:
$ 10500 -------> 100%
$ 11300 -------> x
Clearing the value of x we have:
x = (11300/10500) * (100)
x = 107.6190476
The percentage of growth is:
107.6190476 - 100 = 7.6190476%
Round to the nearest tenth:
7.6%
Answer:
the percent increase in tution is:
7.6%

8 0

4 years ago

What is factorisation

liubo4ka [24]

Factorization is a method of writing numbers as the product of their factors or divisors.

Solution:

Factorisation:

Factorization is a method of writing numbers as the product of their factors or divisors.

In other words we can say, Finding what to multiply together to get an expression.

It is like "splitting" an expression into a multiplication of simpler expressions.

Methods of factorisation:

Factoring out the GCF

The sum-product pattern

The grouping method

The perfect square trinomial pattern

The difference of squares pattern

Factoring out the GCF:

This methods means that factoring out common factors

For example:

$12x^2 + 3x = 3x(4x + 1)$

This can be used when each term in given expression shares a common factor

The sum-product pattern

A quadratic equation may be expressed as a product of two binomials

For example:

$x^2 + 7x + 12 = (x + 3)(x + 4)$

This method can be used for quadratic equations of form $ax^2 + bx + c = 0$

The grouping method

If the polynomial is of the form $ax^2 + bx + c$ and there are factors of ac that add up to b , we can use this method

For example:

$2x^2 + 7x + 3\\\\2x^2 + 6x + 1x + 3\\\\2x(x + 3) + 1(x + 3)\\\\(x + 3)(2x + 1)$

The perfect square trinomial pattern

If the first and last terms are perfect squares and the middle term is twice the product of their square roots , we can use this method

For example:

$x^2 + 10x + 25\\\\(x + 5)^2$

The difference of squares pattern

If the expression represents a difference of squares, we can use this method

Because $a^2 - b^2 = (a + b)(a - b)$

For example:

$x^2 - 25\\\\x^2 - 5^2\\\\(x + 5)(x - 5)$

6 0

4 years ago

A laptop is bought for $1380 VAT inclusive. If VAT was charged at 15%, what

miskamm [114]

Answer:

vat=15%

selling price with vat=$1380

selling price with out vat=?

we have

selling price with vat=$1380

selling price with out vat+vat%of selling price with out vat =$1380

selling price with out vat(1+15/100)=$1380

selling price with out vat=$1380/1.15=$1200

4 0

3 years ago

What type of symmetry can the graph of a quadratic function have?

spin [16.1K]

Answer:

B

Step-by-step explanation:

7 0

4 years ago