1) x^2=64 is the same as x=the root of 64 which gives us: (+-)8
2) here you must us pq-formel as:
5m^2-5m=60
5m^2-5m-60=0
(m^2-5m-60)/5=0
m^2-m-12=0
m=0,5(+-) the root of 0,25+12
m=0,5(+-)3,5
m1=0,5+3,5
m2=0,5-3,5
15) x^2=7x
x^2-7x=0 here there is two x, so:
x(x-7)=0
x1=0
x2=7
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Here you can only use PQ formula in all the others, just as I did in the question number 2</span>
Answer: Choice D) x intercept of f(x) is larger then the x intercept of g(x)
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Explanation:
A) False. The x intercept of f is 1 while the x intercept of g is -1. The x intercept happens when y = 0. Visually, this is where the graph crosses the x axis.
B) False. The y intercept of f(x) is -1, compared to the y intercept of g(x) is +1. The y intercept happens when x = 0, which is when the graph crosses the y axis.
C) False. The y intercept of f(x) is actually smaller than the y intercept for g(x)
D) True. The x intercept of f(x) is larger than the x intercept of g(x). Compare 1 and -1, which are the x intercepts for f and g in that order.
What do you need help with maybe i can help.
Answer:
A possible tape diagram to represent the context if a represents the number of gigabytes of data Abigail can use while staying within her budget is as follows:
52 + 4a = 62
This tape diagram would show that for every gigabyte of data that Abigail uses, she would need to pay an additional $4 on her monthly bill, with a base monthly cost of $52. In order to keep her monthly bill at $62, she would need to use a maximum of 10 gigabytes of data.
-24a²- 6a +9 = - 3(8a² +6a - 9)
8a² +6a - 9 =0
x=(-b +/-√(b² - 4ac))/2a
x = (-6 +/-√(36+4*8*9) /(2*8) = (-6 +/-√(324) /16 = (-6 +/-18)/16
x1 = (-6 +18)/16 = 0.75
x2 = (-6 -18)/16 = - 1.5
-24a²- 6a +9 = - 3(8a² +6a - 9) = -3(a - 0.75)(a + 1.5)
