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Mnenie [13.5K]
3 years ago
11

the position of a particle moving to the right on the x-axis is given by x(t), where x(t) is measured in inches and t is measure

d in minutes for 0≤t≤100. if y=x(t) is a linear function, which of the following would most likely give the best estimate of the speed of the particle, in inches per minute, at time t=20 minutes?
SAT
1 answer:
oee [108]3 years ago
3 0
Jehdjejtjtbsbdbdbfbb bc bfbrbjrjtjtjjtjtjthtbt
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The fathers age is the sum of the son and the mother ​
Anni [7]

Answer: The son is 1 year old and the father is 27 years old.

Explanation: Let’s call the sons age x and the fathers is y. You have the equations x+26=y and 3(x+8)=y=3x+24. So you could say that (3x-24)-(x+26)= z -z. So 2x-2=0. Add 2 to both sides and get 2x=2. x = 1 so the son is 1 year old

7 0
3 years ago
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An ellipse is represented by the equation . each directrix of this ellipse is a ________________________ from the center on the
Anastasy [175]

The true statement about the directrix is that each directrix of this ellipse is 31.25 units from the center on the major axis.

<h3>How to determine the distance of the directrix?</h3>

The equation of the ellipse is given as:

\frac{(x - 5)^2}{625} -\frac{(y - 4)^2}{225} =1

The above means that:

a^2 = 625

a = 25

b^2 = 225

b = 15

Calculate c using:

c^2 = a^2 - b^2

This gives

c^2 = 625 - 225

Evaluate the difference

c^2 = 400

Evaluate the square root

c = 20

The equation of the directrix is

x - x₀ = ± a²/c

So, we have:

x - x₀ = ± 625/20

Evaluate the quotient

x - x₀ = ± 31.25

This means that, each directrix is 31.25 units from the center on the major axis.

Read more about directrix at:

brainly.com/question/26109874

7 0
2 years ago
A doctor sees 24 patients in 8 hours. At this rate, approximately how many patients will the doctor be able to see in a 20-hour
ipn [44]

Answer:

about 60 patients

Explanation:

he sees 3 patients every hour

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3 years ago
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Which of the following groups of children are least likely to be abused than others
ioda
Approximately 4.6 percent of kids get bullied, and then approximately 5. something gets you to the kids who aren't bullied, half of it tge bystanders and the other half the bullies. So, you're left with that other percent of kids who get abused. I hope that helped and if it did then you're welcome
5 0
3 years ago
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