All categories

2 years ago

Solve system by using substitution show all work please quickly x + y = 2 y = 5

Mathematics

1 answer:

Olegator [25]2 years ago

5 0

Answer:

(-3, 5)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality

Step-by-step explanation:

Step 1: Define Systems

x + y = 2

y = 5

Step 2: Solve for x

Substitute in y: x + 5 = 2
Isolate x term: x = -3

You might be interested in

The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c

ivanzaharov [21]

Answer:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma= 500$ represent the population standard deviation

n represent the sample size

Solution to the problem

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{s}{\sqrt{n}}$ (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The confidence2 level is 98% or 0.98 then the significance level would be $\alpha=1-0.98=0.02$ and $\alpha/2=0.01$ , the critical value for this case would be $z_{\alpha/2}=2.326$ , replacing into formula (b) we got:

$n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94$

So the answer for this case would be n=94 rounded up to the nearest integer

8 0

3 years ago

The law that prohibited the marketing of new drugs unless they were adequately tested to demonstrate safety was the A. Poison Pr

snow_lady [41]

I believe the answer your looking for is B.. good luck my friend!

3 0

3 years ago

WHO IS IN K12 7TH...

dsp73

Answer:

.id.k

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

• The ratio of cookies to eggs was 9 to

UkoKoshka [18]

I got shot in the Hebrew morning I was going on the same day lol I was going on the balls in

4 0

2 years ago

Solve 3y-6x=9x for y

mariarad [96]

The answer is 1/5y,,,,,

6 0

2 years ago