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Licemer1 [7]
3 years ago
6

3y-(4y+6x) y=3 x=-2 Evaluate each expression for the given values of the variables

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0

Answer:

9

Step-by-step explanation:

3y-(4y+6x)

=3*3-(4*3+6*-2)

=9

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Write 0.0000002711 in scientific notation. (Use 2 numbers after the decimal point.)
Lesechka [4]

Answer:

Number = 2.71 *  10^{-7}

Step-by-step explanation:

Given

Number = 0.0000002711

Required

Write, using scientific notation

The scientific notation is written in the form:

Form = a * 10^n  <em>Where n is an integer and </em>1 \leq a \leq 10<em />

To start with; <em>Represent the given number as fraction</em>

Number = \frac{2711}{10000000000}

Represent the denominator as an exponent

Number = \frac{2711}{10^{10}}

This can be rewritten in form of:

Number = 2711 * 10^{-10}

Remember that: Form = a * 10^n  <em>Where n is an integer and </em>1 \leq a \leq 10<em />

<em>This implies that; we need to adjust 2711 to a number between 1 and 10;</em>

This gives:

Number = 2.711 * 1000 * 10^{-10}

Write 1000 as an exponent

Number = 2.711 * 10^3 * 10^{-10}

Apply law of indices

Number = 2.711 *  10^{3-10}

Number = 2.711 *  10^{-7}

The question requires 2 numbers after the decimal point;

So, 2.711 will be approximated to 2.71

Number = 2.71 *  10^{-7}

Hence;

<em></em>0.0000002711<em>  </em><em>is equivalent to </em>2.71 * 10^{-7}<em></em>

3 0
3 years ago
Determine if the function is an even function, an odd function or neither. Y=-6x^6-5x^2- 2
nadya68 [22]

Answer:

Even

Step-by-step explanation:

The function Y=-6x^6-5x^2- 2 is a polynomial. A polynomial function is a function where a whole number exponent greater than 1 is on the variable. All polynomial functions have a degree known as the highest exponent. This degree also determines if the functions is even, odd or neither.

The highest exponent on the polynomial is 6 which is an even number. This polynomial is even.

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Nikitich [7]
The answer is $200 the equation is 20+10(3)+150
7 0
3 years ago
Why would you need inequalities?
77julia77 [94]

Answer:

An inequality is a mathematical expression that contains inequality signs. For example, y≤ 12x is an inequality. Inequalities are used to tell us that an expression is either larger or smaller than another expression. Equations and inequalities can contain both variables and constants.

Step-by-step explanation:

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