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Gnoma [55]
3 years ago
12

PLEASE HELP ME!!!!!!!!!!

Mathematics
1 answer:
Svetlanka [38]3 years ago
6 0
V = r + at (solve for a).

You want to isolate a. First subtract r.

v - r = at

Divide by t.

(v - r)/t = a

The answer is a = \frac{v - r}{t}.
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What subjects together do more than half of the class like?
Arturiano [62]

Answer:

Math and Writing

Step-by-step explanation:

Well if we add up all the people we get (9 + 3 + 5 + 3 + 1) = 21. Half of that is 10.5 so the sum of the two subjects must be at least 11. The amount of people that like Math and Writing is 11 people so the two subjects that more than half the class like are Math and Writing.

4 0
2 years ago
Read 2 more answers
30.72 rounded to the nearest tenth
lisabon 2012 [21]
30.72 rounded to the nearest tenth is 30.7
6 0
3 years ago
Read 2 more answers
If a and b are the zeros of the quadratic polynomial 4x2+4x+1, find the value of a/b+b/a?
kow [346]

Answer:

2

Step-by-step explanation:

First you need to factor your quadratic equation. You'll get (2x+1)(2x+1). Your two zeroes will be -1/2 and -1/2 with one being a, the other b. So then

a/b = (-1/2)/(-1/2)

and

b/a = (-1/2)/(-1/2)

Both reduce to 1. So a/b + b/a is 1+1=2

7 0
3 years ago
2. Find the stationary points for the function
vovikov84 [41]

Answer & step-by-step explanation:

Stationary points are the points where the first derivative is equal to zero.

Let's calculate it using the power rule (exponent comes forward, decrease exponent by 1) and the fact that the derivative is a linear operation (that is D[a\ f(x) + b\ g(x)] = a Df(x) + b Dg(x))

The first derivative is then

y' = \frac13 (3x^2) - \frac12 (2x) -6 = x^2-x-6 = (x+2)(x-3)

Note that the last passage is not strictly needed, but it's really helpful to find stationary points, when in this next passage we set it equal to zero. Alternatively, you can use the quadratic formula if you can pull the factors out of your head right away.

y'=0 \rightarrow (x+2)(x-3) = 0 \implies x=-2  || x=3

These two point could be maxima, minima, or inflection points. To check them you can either see how the sign of the first derivative goes, or check the sign of the second derivative, as you're required.

The rules states that if the second derivative evaluated in that point is negative we have a maximum, if it's positive we have a minimum, and if we have a zero we keep derivating until we get a non-zero  value.

In our case, the second derivative we get by calculating the derivative again and we get y'' = 2x-1 . Evaluating it at both points we get

y''(-2) = 2(-2)-1 = -5\\y''(3) = 2(3) -1 = 5

so -2 is a maximum and 3 is a minimum.

5 0
2 years ago
Read 2 more answers
15. You want to design an experiment using 800 marbles and you want six different colors-blue, red,
uysha [10]

Ans : 133.33

800/6=133.33

blue, red,

green, yellow, purple, and pink. You also do not want more than two colors to have the same

What is probability?

Probability is the branch of mathematics concerning numerical descriptions of how probably an event is to do, or how likely it's that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.( note 1)( 1)( 2) The advanced the probability of an event, the more likely it's that the event will do. A simple illustration is the tossing of a fair( unprejudiced) coin. Since the coin is fair, the two issues(" heads" and" tails") are both inversely probable; the probability of" heads" equals the probability of" tails"; and since no other issues are possible, the probability of either" heads" or" tails" is1/2( which could also be written as0.5 or 50).

To learn more about probability from the given link:

brainly.com/question/11234923

#SPJ9

7 0
2 years ago
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