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aleksley [76]
3 years ago
15

Substitution is replacing a variable with an expression it is equal to. True or False

Mathematics
1 answer:
IceJOKER [234]3 years ago
4 0
I’m not gonna do it for a while I think
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Which function is a quadratic function? u(x) = –x 3x2 – 8 v(x) = 2x2 8x3 9x y(x) = x2 3x5 4 z(x) = 7x2 2x3 – 3.
Komok [63]

The function u(x)=-x+3x^{2} -8 is a quadratic function due to the highest exponent being 2.

Given functions are:

u(x)=-x+3x^{2} -8

v(x)=2x^{2} +8x^3+9x

y(x)=x^{2} +3x^5+4

z(x) =7x^{2} +2x^3-3

<h3>What is a quadratic function?</h3>

A function of the form f(x)=ax^{2} +bx+c with a\neq 0 is called a quadratic function means the highest exponent of polynomial should be 2.

Let us check one by one.

u(x)=-x+3x^{2} -8

Highest exponent =2

The function is also of form f(x)=ax^{2} +bx+c so u(x) is a quadratic function.

The functions v(x), y(x), and z(x) are having highest exponents as 3,5, and 3 respectively so they are not quadratic functions.

Hence, the function u(x)=-x+3x^{2} -8 is a quadratic function due to the highest exponent being 2.

To get more about quadratic functions visit:

brainly.com/question/1214333

7 0
2 years ago
A square piece of plastic has a perimeter of 8 cm. how long is each side of the piece of plastic?​
Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Since it is a square, all four sides are equal and its perimeter is just

P=4s, so if P=8 then

4s=8, dividing each side by 4 we get

s=2

So each side of the plastic square is 2 centimeters.

8 0
3 years ago
Read 2 more answers
PLS HELP ASAP<br> does anyone know these answers
katovenus [111]

Answer: i know it

Step-by-step explanation: i know

7 0
2 years ago
What is the radius of the circle given the equation x2 - 6x + y2 + 10y - 2 = 0?
Bezzdna [24]
4x+12y=2
2=4x+12y
2x+6y
8 0
3 years ago
How do I multiply a whole number and a mixed number? For example how do I multiply 8 × 2 7/12
OLga [1]
Make the whole number as an improper fraction. example, 2 7/12 would be 31/12 and then you can multiply 8/1 x 31/12
3 0
3 years ago
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