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DerKrebs [107]
3 years ago
15

Whats the definition of quadratic expression

Mathematics
1 answer:
pantera1 [17]3 years ago
8 0
A quadratic expression<span> is any mathematical </span>expression<span> whose power or degree is two. In other words, any </span>expression<span> that uses variables where the highest exponent or the </span>expression's<span> degree is two is a </span>quadratic expression<span>. The </span>expression<span> must have a power of two, no higher nor lower.</span>
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What is the best defenition for sample as used in in statistics​
leva [86]

Answer: Well sampling is the process of choosing a representative sample from a target population and collecting data from that sample in order to understand something about the population as a whole. A data sample is a set of data collected and the world selected from a statistical population by a defined procedure.

Step-by-step explanation:

8 0
3 years ago
Please Help Me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
GuDViN [60]

Answer:

(-2, 11) and (2, 3)

Step-by-step explanation:

<u>Given system of equations:</u>

1) f(x) = x² - 2x + 3 ⇒ y = x² - 2x + 3

2) f(x) = -2x + 7 ⇒ y = -2x + 7

Solve Using the Substitution Method:

<u>Step 1:</u> Substitute the the first equation into the second.

⇒ x² - 2x + 3 = -2x + 7

<u>Step 2:</u> Solve for x.

x² - 2x + 3 = -2x + 7 [ Add 2x to both sides. ]

x² - 2x + 2x + 3 = -2x + 2x + 7

⇒ x² + 3 = 7 [ Subtract 3 from both sides. ]

x² + 3 - 3 = 7 - 3

⇒ x² = 4 [ Take the square root of both sides. ]

√x² = √4

x = ± 2

⇒ x = -2, x = 2

<u>Step 3:</u> Solve for y.

<em>Substitute the found x-values into one of the given equations.</em>

y = -2x + 7 ⇒ y = -2(-2) + 7 ⇒ y = 4 + 7 ⇒ y = 11

y = -2x + 7 ⇒ y = -2(2) + 7 ⇒ y = -4 + 7 ⇒ y = 3

The solutions to the system of equations are: (-2, 11) and (2, 3).

Learn more about system of equations here:

brainly.com/question/26094713

brainly.com/question/27850666

5 0
2 years ago
Read 2 more answers
Which statements can be represented by this equation? Select three options.<br> 4<br> 29.2 - 14
MariettaO [177]
The answer is 15.2 hope helps you
6 0
3 years ago
Read 2 more answers
X+6-5=8-2 <br> x=? <br> solve the following equation. then place the correct number in the box
Valentin [98]
X
+
6
−
5
=
8
−
2

+
6
−
5
=
8
−
2
Solve
1
Subtract the numbers
x
+
6
−
5
=
8
−
2

+
6
−
5
=
8
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2
x
+
1
=
8
−
2

+
1
=
8
−
2
2
Subtract the numbers
x
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1
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8
−
2

+
1
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8
−
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x
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1
=
6

+
1
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6
3
Subtract
1
1
from both sides
x
+
1
=
6

+
1
=
6
x
+
1
−
1
=
6
−
1

+
1
−
1
=
6
−
1
4
Simplify
Subtract the numbers
Subtract the numbers
x
=
5

=
5
7 0
2 years ago
Why do you cross-multiply when you solve proportions?
Llana [10]

Answer:  The reason you cross multiply fractions is to compare them. Cross multiplying fractions tells us if the two fractions are equal or which one is greater. This is especially useful when you are working with larger fractions that you aren't sure how to reduce.

It works cause they have the same denominator

bruh

5 0
3 years ago
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