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taurus [48]
3 years ago
10

Can you please for the love of god help me it's 2am and I cannot figure this out​

Mathematics
2 answers:
natta225 [31]3 years ago
8 0

Answer: a) d(t) = \frac{13}{14} (t - 70) + 65   b: 6:41 pm

duration of time passed:

5:10 pm - 4:00 pm = 70 mins

distance = 65 miles

you points to use to make an equation:

(0,0) and (70,65)  ---------------------> <em>( (0,0) is bc youre beginning the trip and you have no distance )</em>

find the slope of your "future" equation

\frac{y_2-y_1}{x_2-x_1} = \frac{65}{70} = \frac{13}{14} = m

now use point-slope form

y - 65 =  \frac{13}{14} (x - 70)

y=  \frac{13}{14} (x - 70) + 65

and since it wants it in terms of d and t,

d(t) = \frac{13}{14} (t - 70) + 65

part b:

150 =  \frac{13}{14} (t - 70) + 65

85 = \frac{13}{14} (t - 70)

85 = \frac{13}{14} t - 65

150 = \frac{13}{14} t

2100 = 13t

161.54 = t

about 162 minutes

Thennnn:

162/60 = 2 hours and 41 mins

4:00 pm + 2 hours and 41 mins = 6:41 pm

anzhelika [568]3 years ago
5 0

Answer:

8:05 pm (If you round to the nearest tenth place)

Step-by-step explanation:

basically, 4:00 pm and 5:10 pm have a 1 hour and 10 minute difference.

1 hour and 10 minutes divided by 65 miles is 1.6923076 or 1.7 minutes

1.7 minutes times 150 miles is 2 hours and 55 minuets

2 hours and 55 minutes plus 5:10pm is 8:05 pm

I'm so sorry if I'm wrong!

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If she doubles the area of her lot, it should be 2x^2.

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Three functions are given below: f(x), g(x), and h(x). Explain how to find the axis of symmetry for each function, and rank the
LuckyWell [14K]

Answer:

1. x=8 is the line of symmetry for f(x) = -4(x − 8)2 + 3

2. x=-2 is the line of symmetry of g(x) = 3x2 + 12x + 15

3. x=3 is the line of symmetry of h(x), shown in the graph.

Step-by-step explanation:

To find the line of symmetry of a vertical parabola (second degree polynomial), find the value of x that sets the squared term to zero.  This is a vertical line passing through the vertex of the second degree function.

1. f(x) = -4(x − 8)2 + 3

setting x=8 will give f(8) = 3, so x=8 is the line of symmetry

2. g(x) = 3x2 + 12x + 15

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g(x) = 3x2 + 12x + 15

g(x) = 3(x^2+4x+5)

g(x) = 3(x^2 + 2(2x) +4 +1)

g(x) = 3((x+2)^2 +1)

So setting x=-2 will anihilate or cancel the squared term, therefore

x= -2 is the line of symmetry.

3. the curven shown in graph,

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3 years ago
Distance: Jack and Jill start from the same point and walk in'opposite directions. Jack
777dan777 [17]

Answer:

t = 6 km/hour

And, J would be 4 km per hour

Step-by-step explanation:

Let us assume the speed of Tom be T

And, the Speed of Jim  be J

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As they are walking in the opposite direction

Thus,  

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