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vfiekz [6]
3 years ago
15

-7.71875 as mixed number in simplest form

Mathematics
1 answer:
Maksim231197 [3]3 years ago
6 0
The answer as a mixed number is 7 \frac{23}{32}
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the stopping distance of an automobile is directly proportional to the square of its speed v. a car required 90 feet to stop whe
vesna_86 [32]
First we write the mathematical model in a generic way:
 "The stopping distance of an automobile is directly proportional to the square of its speed v"
 d = kv ^ 2
 Where,
 k: proportionality constant.
 We now look for the value of K:
 d = kv ^ 2
 90 = k ((70) * (5280/3600)) ^ 2
 k = 90 / ((70) * (5280/3600)) ^ 2
 k = 0.008538539 s ^ 2 / feet
 The equation will then be:
 d = (0.008538539) * v ^ 2
 For v = 71 miles per hour we have:
 d = (0.008538539) * ((71) * (5280/3600)) ^ 2
 d = 92.6 feet
 Answer:
 a mathematical model that gives the stopping distance in terms of its speed v is:
 d = (0.008538539) * v ^ 2
 The stopping distance if the brakes are applied when the car is traveling at 71 miles per hour is:
 d = 92.6 feet
3 0
3 years ago
What is the value of k
Orlov [11]

Answer:

b

Step-by-step explanation:

I think

4 0
3 years ago
Solve the Simultaneous equations 2x + 4y = 9 and <br> 4x2 + 16y2 = 20x + 4y - 19
Veseljchak [2.6K]

Answer:

I'm so sorry I can't help but you can try and use math-way to answer anyquestions regarding equations and such!

8 0
3 years ago
Read 2 more answers
Factor completely: −2x3 + 6x2
Pavel [41]
Correct answer is C.

-2x^3+6x^2  \\-2x^2x+2x^23 \\2x^2(-x+3) \\2x^2(-(x-3)) \\-2x^2(x-3)
4 0
3 years ago
= 1/2 (u+v)t
RoseWind [281]

The distance travelled by an object is 50 m.

<h3>What is Distance?</h3>

The distance between two points is the length of the path connecting them.

Here, given equation of distance

         S = 1/2 (u + v)t

Where s is the distance traveled by an object (in meters)

initial velocity u (in m/s)

final velocity v (in m/s).

t in seconds.

Now, given values are;

u = 8 m/s ;  v = 12 m/s ;   t = 5 sec.

    S = 1/2 (8 + 12)5

    S = 1/2 (20)5

    S = 100/2

    S = 50 m.

Thus, the distance travelled by an object is 50 m.

Learn more about Distance from:

brainly.com/question/15172156

#SPJ1

5 0
2 years ago
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