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2 years ago

Please help me with this.

Mathematics

1 answer:

DanielleElmas [232]2 years ago

4 0

Under the assumption of uniform motion, the traveller will travel a distance of 20 feet before slowing down the vehicle to less than 40 miles per second.

<h3>How to calculate the distance taken by traveler before braking</h3>

According to this question, the vehicle travels at constant velocity before the traveler hit the brakes. The distance traveled (s), in feet, is equal to the product of velocity (v), in feet per second, and time (t), in seconds:

s = v · t (1)

If we know that v = 40 ft/s and t = 0.5 s, then the traveled distance of the vehicle is:

s = (40 ft/s) · (0.5 s)

s = 20 ft

Under the assumption of uniform motion, the traveller will travel a distance of 20 feet before slowing down the vehicle to less than 40 miles per second.

To learn more on uniform motion: brainly.com/question/118814

#SPJ1

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Machine A produces bolts at a uniform rate of 120 every 40 seconds, and Machine B produces bolts at a uniform rate of 100 every

Nutka1998 [239]

Answer:

25 seconds

Step-by-step explanation:

Hi there!

In order to answer this question, first we need to know how many bolts per second are produced by each machine, this can be known by dividing the number of bolts by the time it takes.

For machine A:

$A = \frac{120 bolts}{40 s}= 3 \frac{bolts}{s}$

For machine B:

$B = \frac{100 bolts}{20 s}= 5 \frac{bolts}{s}$

So, if the two machines run simultaneously, we will have a rate of prodcution of bolts equal to the sum of both:

$A+B=(3+5)\frac{bolts}{s}=8\frac{bolts}{s}$

Now, we need to know how much time it will take to producee 200 bolts, to find this out we need to divide the amount of bolts by the production rate:

$t = \frac{bolts}{ProductionRate}= \frac{200 bolts}{8 \frac{bolts}{s} }$

The bolts unit cancell each other and we are left with seconds

$t = \frac{200}{8} s = 25 s$

So it will take 25 seconds to produce 200 bolts with machine A and B running simultaneously.

Greetings!

4 0

3 years ago

Read 2 more answers

About 2% of children in the United States are allergic to peanuts. Choose three children at random and let the random variable X

VMariaS [17]

For the answer to the question above asking what is the conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy?
The answer to the question above is 0.0012. I hope this helps

3 0

3 years ago

Craig ran 4 days last week. His distances were

elixir [45]

6.875 average.

To calculate the average you add up all of the numbers and divide it by the number of numbers there are, in this case there are 4 numbers. So you add 3.25+6.5+7.25+10.5 and divide that by 4

8 0

2 years ago

Realice la óperacion y exprese el resultado en notación científica (0,00000826) (235×10 elevado a -7) sobre 0,0017×10 elevado a

earnstyle [38]

Answer:

1,42 * 10 ^ -5

Step-by-step explanation:

La notación científica también se conoce como forma estándar.

Tenemos que realizar la siguiente operación y dejar el resultado en forma estándar.

Entonces;

0,00000826 * 235 × 10 ^ -7 / 0,0017 × 10 ^ -2

También;

8.26 * 10 ^ -6 * 2.35 * 10 ^ -5 / 1.7 * 10 ^ -5

= 19,411 * 10 ^ -11 / 1,7 * 10 ^ -5

= 1,42 * 10 ^ -5

6 0

2 years ago

How should I solve this? I tried to but I couldn't get past the quadratic formula.

xxMikexx [17]

First multiply all terms by z
8-z^2=4z

Then order into standard form
-z^2-4z+8=0

Multiply the equation by -1
z^2+4z-8=0

Plug into quadratic equation
-4±√16-4(-8)
-4±√48

(-4±4√3)/2
-2±2√3

Final answer: z=-2± 2√3

8 0

3 years ago