Explain when each method(graphing, substitution,linear combinations) is a good method to find a solution to a system of equations.

Answers

Answer 1

Answer: Graphing is a good method when you have small integers or fractions as your slope.
Substitution is a good method when you have two equations, and when one of the coefficient of the variables is one.
Linear combinations is a good method when you have the same coefficient for the same variable in 2 different equations.

Answer 2

Answer: Graphing is good to graph a line. Substitution is good because you have to subtitute the value whichis easy and elimination is good just to find oone variable first and the other variable

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A report sponsored by the California Citrus Commission concluded that cholesterol levels can be lowered by drinking at least one glass of a citrus product each day. This report is biased. The report may be biased because:

Answers

becasue, if x company sells y product, and they release some research that says that y product is good for you, then maybe they just want your money

also they may not be an authority on the nutrition levels of citric products

Which of these geometric terms best describes railroad tracks?

Answers

Gee, there's nothing to choose from. I'd guess parallel lines.

Subtract: 5 – 3 1⁄3

Answers

5 - 3 1/3?

whell the answer would come up to be 5/3

5/3 the answer is or 2/3

What is 0.0008235 in scientific notation

Answers

By definition, we have:

Scientific notation, also called pattern or notation in exponential form, is a way of writing numbers that accommodate values too large or too small to be written in a conventional manner.

A number written in scientific notation follows the following pattern:

Where,

m: mantissa

e: order of magnitude

We then have the following number:

0.0008235

Using the definition, we have the number in scientific notation is:

$0.0008235 = 8.235 * 10 ^ {-4}$

Answer:

0.0008235 in scientific notation is:

$0.0008235 = 8.235 * 10 ^ {-4}$

The number in scientific notation is,

⇒ 8.235 × 10⁻⁴

We have to give that,

A number to change into scientific notation is,

⇒ 0.0008235

Since Scientific notation is a way of writing very large or very small numbers.

For example; 230,000,000 can be written in scientific notation as

2.3 x 10⁸.

Now, Change the number into scientific notation as,

⇒ 0.0008235

⇒ 8.235 × 10⁻⁴

To learn more about scientific notation visit:

brainly.com/question/1767229

#SPJ6

Given PQRS ≌ BCDE, what is m∠D?A.
63°

B.
90°

C.
98°

D.
109°

Answers

If they are congrunt, and it seems like the shape was rotated, so the answer is D

What is the solution to the equation?4 x squared − 3 equals 77
Choose all answers that are correct.

A.
5 square root of 2

B.
2 square root of 5

C.
− 2 square root of 5

D.
− 5 square root of 2

Answers

The answers are B. 2 square root of 5 and C. − 2 square root of 5.

$4 x^(2) -3=77$
$4 x^(2) =77+3$
$4 x^(2) =80$
$x^(2) =80:4$
$x^(2) =20$
$x= √(20)$
$x= √(4*5)$
$x= √(4)* √(5)$

Since √4 could be either -2 or +2, the solutions are:
$x=2 √(5)$ or $x=-2 √(5)$

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