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SVETLANKA909090 [29]
3 years ago
13

Calculate the average speed for the following sections on the graph.

Mathematics
2 answers:
Temka [501]3 years ago
5 0

Answer:

a to b is 20m/s I'm in k12 and I got the same question but I don't know for c to d yet

Step-by-step explanation:

A =0

B=200

T=10s

200 divided by 10 is 20m/s

and for the question at the bottom, the answer is c bc c to d is accelerating

Dimas [21]3 years ago
3 0

Answer:

A to B = 2000 m/s

C to D = 30,000m/s

Step-by-step explanation:

A to B is 10secs and the distance is 200m so you multiply them and you get 2000m/s

C to D is 60secs and the distance is 500m so you multiply and you get 30,000m/s

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Maria bought apples(a) for $2.32 per pound and bananas(b) for $1.65. She spends $31.42. Write the equation for this situation.
riadik2000 [5.3K]
(2.32a) + (1.65b) = 31.42
6 0
3 years ago
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Given that 3+√5/4−√5 = a + b√5, find the values of “a” and “b”<br>URGENT PLZ ANSWER!
Vikki [24]

Answer:

Step-by-step explanation:

hello :

√(5/4)= √5/ √4 =√5/2 = (1/2)√5

3+√5/4−√5 = 3+(1/2)√5   so : a=3  and  b= 1/2

6 0
4 years ago
Five percent of all blue ray players manufactured by a large electronics company are defective. A quality control inspector rand
iVinArrow [24]

Answer:

0.1354 = 13.54% probability that exactly one of these three blue ray players is defective.

Step-by-step explanation:

For each player, there are only two possible outcomes. Either it is defective, or it is not. The probability of a player being defective is independent of any other ray. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Five percent of all blue ray players manufactured by a large electronics company are defective.

This means that p = 0.05

A quality control inspector randomly selects three players from the production line.

This means that n = 3

What is the probability that exactly one of these three blue ray players is defective?

This is P(X = 1). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{3,1}.(0.05)^{1}.(0.95)^{2} = 0.1354

0.1354 = 13.54% probability that exactly one of these three blue ray players is defective.

6 0
3 years ago
F(x)=2x g(x)=3x^3 f(x)/g(x)
Dimas [21]

Answer:

\frac{f(x)}{g(x)}=\frac{2}{3x^2}

Step-by-step explanation:

We want to find \frac{f(x)}{g(x)} given that f(x)=2x and g(x)=3x^3.

We substitute the functions to get:

\frac{f(x)}{g(x)}=\frac{2x}{3x^3}

We simplify the rational function to get:

\frac{f(x)}{g(x)}=\frac{2}{3x^2}

However, this function is only defined for x\ne 0

6 0
3 years ago
How many solutions does the following system of equations have? y=5/2x+2 and 2y=5x+8
TiliK225 [7]

Answer:

No solutions.

Step-by-step explanation:

y = 5/2x + 2

2y = 5x + 8

Plug the first equation into the second.

2(5/2x + 2) = 5x +8

5x + 4 = 5x + 8

5x + 4 cannot equal 5x + 8, so this system of equations has no solutions.

8 0
3 years ago
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