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2 years ago

What is the solution to the inequality |2n +5| > 1?

Mathematics

1 answer:

NemiM [27]2 years ago

5 0

Answer:

the answer is C

Step-by-step explanation:

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When asked about favorite Thanksgiving leftovers, 5% of the people said turkey and 7/100 said mashed potatoes. Which food was mo

Serjik [45]

Answer: Mash Potatoes

Step-by-step explanation: 7/100 written as a percentages is 7%

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1 year ago

Read 2 more answers

Explain how you know which method you should use to solve a rational equation.

notsponge [240]

<u>Methods to solve rational equation:</u>

Rational equation:

A rational equation is an equation containing at least one rational expression.

Method 1:

The method for solving rational equations is to rewrite the rational expressions in terms of a common denominator. Then, since we know the numerators are equal, we can solve for the variable.

For example,

$\frac{1}{2}=\frac{x}{2}\Rightarrow x=1$

This can be used for rational equations with polynomials too.

For example,

$\frac{1+x}{x-3}=\frac{4}{x-3}\Rightarrow(1+x)=4 \Rightarrow x=3$

When the terms in a rational equation have unlike denominators, solving the equation will be as follows

$\frac{x+2}{8}=\frac{3}{4}$

$\Rightarrow\frac{x+2}{1}=\frac{3\times8}{4}\Rightarrow{x+2}=2\times3$

$\Rightarrow{x+2}=6\Rightarrow x=6-2\Rightarrow x=4$

Method 2:

Another way of solving the above equation is by finding least common denominator (LCD)

$\frac{x+2}{8}=\frac{3}{4}$

Factors of 4: $1\times2\times2$

Factors of 8: $1\times2\times2\times2$

The LCD of 4 and 8 is 8. So, we have to make the right hand side denominator as 8. This is done by the following step,

$\Rightarrow\frac{x+2}{8}=\frac{3}{4}\times{2}{2}$

we get,

$\Rightarrow\frac{x+2}{8}=\frac{6}{8}$

On cancelling 8 on both sides we get,

$\Rightarrow(x+2)=6\rightarrow x=6-2\rightarrow x=4$

Hence, these are the ways to solve a rational equation.

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2 years ago

What is the approximate percent decrease from 1,865 to 1,240?

bearhunter [10]

Answer: 33.5

Step-by-step explanation: this question is on brainly lol but nobody explained it

1865 - 1240 = 625

Divide 625 by 1865 (626 goes first)

The answer is 0.335 move the decimal 2x forward

33.5

4 0

2 years ago

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Explain how System 1 becomes equivalent to System 2.

Nostrana [21]

Answer:

$\left\{\begin{array}{ccc}(A+L)x+(B+M)y=C+N\\Ax+By=C\end{array}\right$

<h3>A.The first equation in System 2 is the sum of the equations in System 1. The second equation in System 2 is the first equation in System 1.</h3>

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}Ax+By=C\\Lx+My=N\end{array}\right}\qquad\text{add both sides of the equations}\\(Ax+Lx)+(By+My)=C+N\qquad\text{distributive}\\(A+L)x+(B+M)y=C+N$

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2 years ago

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5. Why is marine pollution a major problem?

andreyandreev [35.5K]

Answer:

Marine pollution is a major problem because it <em>endangers marine life that ingests the pollution which affects us when we eat fish or seafood, makes the ocean less safe for humans to swim in, and the ocean can't function the way it's meant to when unpolluted.</em>

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2 years ago