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Studentka2010 [4]
3 years ago
5

Is either x = 18 or x = 14 a solution to x - 8 < 9?

Mathematics
2 answers:
polet [3.4K]3 years ago
4 0

Answer:

A.

Step-by-step explanation:

IRISSAK [1]3 years ago
4 0

Answer:

B. Neither is a solution

Step-by-step explanation:

x - 8 < 9

  + 8 + 8

     x = 17

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How to find the discriminant of
Evgen [1.6K]

the discriminant   b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0


13x^2-16x = x^2 -x


we need to get in it the standard form


subtract x^2 from each side


12x^2 -16x = -x


add x to each side


12x^2 -15x = 0


12x^2 -15x -0 =0


a=12 b=-15 c=0


b^2 -4ac


the discriminant = b^2


b^2 = (-15)2 = 225




6 0
3 years ago
What is the perimeter of the triangle?<br>units=<br>​
Luba_88 [7]

Answer:

36

Step-by-step explanation:

Use pythagorean theorem

side 1 = 9

side 2 = 12

9^2 + 12^2 = third side ^2

third side = 15

9+12+15 = 36

Hope this helpful!!!!! :)

8 0
3 years ago
What is the image of (−3,−9) after a dilation by a scale factor of 1/3 centered at the origin.
denis-greek [22]

Answer:

(-1,-3)

Step-by-step explanation:

Multiply both x and y values by 1/3 or divide both by 3.

4 0
3 years ago
What is the average rate of change of the function
Reptile [31]

Answer:

Average rate of change =-35.7084

Step-by-step explanation:

Given function is f(x)=480(0.3)^x and we need to find average rate of change of the function from x=1\ to\ x=5.

Average rate of change =\frac{f(b)-f(a)}{b-a}

So,

here\ b=5\ and\ a=1\\f(5)=480(0.3)^5\\=480\times0.00243=1.1664\\and\\f(1)=480(0.3)^1\\=480\times0.3=144

Average rate of change

=\frac{f(b)-f(a)}{b-a}\\\\=\frac{f(5)-f(1)}{5-1}\\\\=\frac{1.1664-144}{5-1}\\\\=\frac{-142.8336}{4}= -35.7084

Hence, average rate of change of the function f(x)=480(0.3)^x over the intervel x=1\ to\ x=5 is =-35.7084.  

5 0
3 years ago
PLEASEEEEEEEEEEEEEEEEEEEEE answer this today thank u
Lostsunrise [7]

Answer:

see explanation

Step-by-step explanation:

f(x) × g(x)

= 11(123x - 40) ← distribute

= 1353x - 440

Substitute x = - 4 into the product

= (1353 × - 4) - 440

= - 5412 - 440

= - 5852

7 0
3 years ago
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