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Scilla [17]
3 years ago
12

When maggie applies the brakes of her car, the car slows uniformly from 15.0 m/s to 0 m/s in 2.50 s. how many meters before a st

op sign must she apply her brakes in order to stop at the sign?
Mathematics
1 answer:
Aliun [14]3 years ago
3 0
In this question, we can determine Maggie car initial speed (15m/s), final speed(0m/s) and the time her car moves (2.5s). Then to calculate the distance she travels, we need to multiply the average speed with time. The equation would be:

Distance traveled= (initial speed+final speed)/2 x time
Distance traveled= (0m/s + 15m/s)/2 x 2.5 second= 7.5m/s x 2.5s= 18.75m
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The number $75$ is decreased by $40\%$, then the result is again decreased by $40\%$. What is the final result?
stich3 [128]
To get 75 decreased by 40% you subtract 40% from 100%.
100 - 40 = 60

So to get 60% of 75 you multiply .60 by 75.
.60 x 75 = 45

You have $45 now, but you have to decrease it by 40% again. You do the same process, so we need to multiply .60 by 45.
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So, the final result is $27.
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3 years ago
If a movie theater sells 400 tickets for a total of
Oksanka [162]

Answer:

they would make $25,500

Step-by-step explanation:

6,800/400=17

1,500*17=25,500

<em>answer</em><em> </em>:$25,500

8 0
3 years ago
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gogolik [260]

Answer:

  60 + 70n ≤ 200

Step-by-step explanation:

Since the $200 is a maximum, only inequalities with "≤ 200" make any sense in this context.

Since the unit rate for training sessins is $70, only expressions containing 70n make any sense in this context.

The only inequaity that makes any sense in this context is ...

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5 0
3 years ago
And the options are:
andreyandreev [35.5K]
They aren't similar because they're not proportional (the sides do not form equal ratios)<span />
6 0
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What are the solutions of the quadratic equation 4x^2-8x-12=0
Wewaii [24]

Answer:

<h3>          x₁ = -1,   x₂ = 3</h3>

Step-by-step explanation:

4x^2-8x-12=0\\{}\qquad\qquad^{\div4\qquad\div4}\\x^2-2x-3=0\\\\x^2+x-3x-3=0\\\\x(x+1)-3(x+1)=0\\\\(x+1)(x-3)=0\\\\x+1=0\quad\vee\quad x-3=0\\\\x=-1\quad\vee\quad x=3

6 0
3 years ago
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