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stich3 [128]
4 years ago
12

Solve 0.25[2.5x + 1.5(x – 4)] = –x. x =

Mathematics
1 answer:
Aleksandr [31]4 years ago
5 0
0.25[2.5x+1.5(x-4)]=-x
0.25(2.5x+1.5x-6)=-x
0.25(4x-6)=-x
x-1.5=-x
2x-1.5=0
2x=1.5
x=0.75
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If a new lacrosse stick is labeled $29, what would the new price be if the sign above it says "10% off"?
olga2289 [7]
The actual price of a new lacrosse stick = $29
Percentage of discount given = 10%
Then
Amount of discount that is given = (10/100) * 29 dollars
                                                     = 29/10 dollars
                                                     = 2.9 dollars
So
The new price of the lacrosse stick = (29 - 2.9) dollars
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So the new price of the lacrosse stick on display will be $29.10 dollars. I hope there is nothing complicated in the procedure for you to not understand. In future you can always use this procedure for solving similar problems without requiring any additional help from outside.
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8 0
2 years ago
30 POINTS!!! WILL MARK BRAINLIEST IF YOU SHOW ALL YOUR WORK!!!
Alborosie

Answer:

Part A: (2x−5)(x+2)

Part B: (5/2,0) and (-2,0)

Part C: The graph of f(x) has both "ends" of the graph pointing upward. You can describe this as heading toward infinity.

Part D: To graph function we can use x-intercepts and "ends" to sketch.In order to graph better use one more point of parabola that you can find as the average of x-intercepts: (-2+5/2)/2 =1/4.This is just x coordinate and you need to plug in 1/4 in the f(x) and find y coordinate -10 1/8. You can use y-intercept (0,-10) as well to graph.

Step-by-step explanation:

2x^2-3x-5=y

(2x-5)(x+1)=y

(2x-5)(x+1)=0

2x-5=0

2x=5

x=2.5

x+1=0

x=-1

you have an even degree (2) and a positive coefficient (2)

therefore as x---> -∞, f(x)----> +∞

also, as x----> +∞, f(x)----> +∞

also notice that this is a parabola that opens upwards so both "ends" approach positive infinity

plot the x-intercepts, find the vertex using h=-b/2a and substituting this value into the equation to find k and make a table of values to graph the parabola unless you only want a rough sketch of the graph-you know the x-intercepts and you found the vertex using h=-b/2a

Mark brainliest please.

3 0
3 years ago
Which ordered pair in the form (x,y) is a solution of this equation?
qwelly [4]
D
7•4 =28, -5•0 =0... 28+0=28
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3 years ago
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