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likoan [24]
3 years ago
5

105x^6y^5+70x^7y^11/35x^7y^4

Mathematics
1 answer:
o-na [289]3 years ago
6 0

Answer:

3\frac{y}{x} + 2y^{7}

Step-by-step explanation:

We have to simplify the expression as given below:

\frac{105x^{6}y^{5} + 70x^{7}y^{11}}{35x^{7}y^{4}  }

As we know that \frac{a + b}{c} = \frac{a}{c}  + \frac{b}{c}

= \frac{105x^{6}y^{5}}{35x^{7}y^{4}} + \frac{70x^{7}y^{11}}{35x^{7}y^{4}}

As we know the property of exponent \frac{x^{a} }{x^{b} } = x^{a - b}

= 3x^{6 - 7}y^{5 - 4}  + 2x^{7 - 7} y^{11 - 4}

= 3x^{-1}y^{1} + 2x^{0} y^{7}

As we know the properties of exponents a^{-b} = \frac{1}{a^{b} } and a^{0} = 1

= 3\frac{y}{x} + 2y^{7} (Answer)

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Average national teachers salaries can be modeled using the equation y=9.25(1.06)^n , where y is the salary in thousands of doll
kiruha [24]
y=9.25(1.06)^{n}
Plug in n to find y.
n would be 50 because 2020-1970=50.

Use order of operations to solve.
y=9.25(1.06)^{50} \\ y=9.25(18.42) \\ y=170.39

Since y is the salary in thousands, multiply 170.39 by 1000.
170.39*1000=17039

A teacher can expect to have about $17,039 as a salary in the year 2020.
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2 years ago
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2 years ago
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3 0
3 years ago
The value of y varies directly with x. If x = 218, then y = 436. What is
adell [148]

Answer:

<h2>x = 7</h2>

Step-by-step explanation:

To find the value of the value of x when

y = 14 we must first find the relationship between them

The statement

The value of y varies directly with x is written as

y \:  \:  \:  \alpha  \:  \:  \: kx

where k is the constant of proportionality

when x = 218

y = 436

So we have

436 = 218k

Divide both sides by 218

k = 2

So the formula for the variation is

<h2>y = 2x</h2>

when y = 14

We have

14 = 2x

Divide both sides by 2

<h3>x = 7</h3>

Hope this helps you.

5 0
2 years ago
Solve the following equation: 2(4^2 + 10) =
lesantik [10]

Answer:

52

Step-by-step explanation:

2(4^2 + 10) =

We do what's in the parenthesis first.

4^2 = 16 and 16+10 =26.

2(26)

= 52

3 0
3 years ago
Read 2 more answers
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