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luda_lava [24]
2 years ago
8

Find the domain and range of the function below

Mathematics
1 answer:
natali 33 [55]2 years ago
6 0
X is greater than or equal to 0
y is greater than or equal to 0
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Use the quadratic function f(x) = 2x^2 + 4x - 15. Find any x intercepts.
8_murik_8 [283]

So for this function we will be using the quadratic formula, which is x=\frac{-b+\sqrt{b^2-4ac}}{2a},\frac{-b-\sqrt{b^2-4ac}}{2a} , to solve. a = x^2 coefficient, b = x coefficient, and c = constant. Using our equation, we can solve for the zeros (x-intercepts) as such:

x=\frac{-4+\sqrt{4^2-4*2*(-15)}}{2*2},\frac{-4-\sqrt{4^2-4*2*(-15)}}{2*2}\\ \\ x=\frac{-4+\sqrt{16-(-120)}}{4},\frac{-4-\sqrt{16-(-120)}}{4}\\ \\ x=\frac{-4+\sqrt{136}}{4},\frac{-4-\sqrt{136}}{4}\\ \\ x=1.92,-3.92

In short, your x-intercepts (rounded to the hundredths) are (1.92,0) and (-3.92,0).

6 0
3 years ago
#9 What is the RADIUS of this circle?<br> 5 cm <br> Someone plz help my friends ain’t responding
ivolga24 [154]

Answer and Step-by-step explanation:

<u>The radius of this circle is 5 cm.</u>

This is because the radius of any circle is the distance from the middle of the circle to the edge of the circle. The diagram shows us 5cm as that distance.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

3 0
3 years ago
Find the midpoint (6,-7) and (4,1)
shepuryov [24]

Answer:

(5, -3)

Step-by-step explanation:

let (x1, y1) = (6, -7) and (x2, y2) = (4,1)

(Xmidpoint, Ymidpoint) = ( (x1+x2) / 2, (y1+y2) / 2)

                                       = (5, -3)

5 0
3 years ago
HELPPOP PLEASRSGEHDNDBIEISJEp
-Dominant- [34]

Answer:

linear

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
18x + 3°<br> ( 10x - 27)<br> Find the measure of each indicated angle
Natali [406]

Answer:

48x-81

Step-by-step explanation:

18x+3(10x-27)

Then distribute

18x+30x-81

Combine like terms

Final Answer: 48x-81

7 0
3 years ago
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