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lesya [120]
3 years ago
14

On a table what does quadratic, linear, and exponential mean?

Mathematics
1 answer:
salantis [7]3 years ago
5 0
A quadratic equation is an equation with exponents and x's, for example 3x^2+4x+3 is a quadratic. and quadratics usually have two points it can cross the x axis. though that doesn't mean it always crosses twice. some quadratic equations can cross more then twice and some don't at all.

linear equations are simple. they always show a straight line on a graph.

And exponential are kind like quadratics, exponential always have an exponent but don't have multiple x intercepts. exponentials  are equations like the equation for compound interest rates (Initial Account Balance * (Interest Rates) ^ Time) it is exponentially growing using exponents.
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Which of the following are solutions?
zloy xaker [14]

This is a quadratic equation. There's a shortcut (two shortcuts really) called the Shakespeare Quadratic Formula (2b or -2b) applicable when the middle term is even:

x^2 - 2bx + c \textrm{ has zeros } x= b\pm \sqrt{b^2-c}

ax^2 - 2bx + c \textrm{ has zeros } x= \dfrac 1 a( \left b\pm \sqrt{b^2-ac} \right)

OK, our problem is

9x^2 - 6x -7 = 0

x = \frac 1 9 (3 \pm \sqrt{9-(9)(-7)}) = \frac 1 9(3 \pm \sqrt{72})= \frac 1 9(3 \pm 3 \sqrt{8}) = \frac 1 3(1 \pm \sqrt 8)

Typically we'd write \sqrt 8 = 2 \sqrt 2 but the answers here don't so we won't either.

Answer: C and D

7 0
3 years ago
4. Find the value of x.
oksano4ka [1.4K]

Answer:

x = 50°

Step-by-step explanation:

The sum of the measures of the angles of a quadrilateral is 360°

360 - 40 - 80 - 110 = 130

130 is the measure of the quad that is adjacent to the angle of x° and is supplementary to that angle also.

Therefore, x = 180 - 130 = 50

7 0
3 years ago
Write an equation to describe the relationship between the independent variable x and the dependent variable y.
AlexFokin [52]

Answer:

x=y+2

Step-by-step explanation:

4 0
3 years ago
(-2.3) +<br> (-5.9)<br><br><br><br> Can somebody please show me how to do these types of problems?
agasfer [191]

Answer:

Idk

Step-by-step explanation: I think u multiply the -2.3 and -5.9 and get 13.57. Idk about the addition part

7 0
3 years ago
Can the side of a triangle have lengths 2,8,9?
photoshop1234 [79]

Answer:

Yes

Step-by-step explanation:

The smaller two sides have to be greater than the biggest side.

2+8>9, so it can make a triangle.

3 0
2 years ago
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