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3 years ago

True or false A segment is a part of a line with one endpoint and extends infinitely in one direction

Mathematics

2 answers:

Alik [6]3 years ago

8 0

False . A ray is a part of a line that has one endpoint and goes on infinitely in only one direction.

ELEN [110]3 years ago

8 0

Answer:false

Step-by-step explanation:

a segment is a line with two endpoints. a ray however has one end point and extends in another direction

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Giving 20 points to the right person if your wrong your getting reported

Paha777 [63]

Answer:

730

Step-by-step explanation:

A(X)= 2πRH+2πR^2

A(X)=2π(7.5)(8)+2π(7.5)^2=730.42 = 730

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3 years ago

Notebooks cost 0.75 each and shipping costs are $3.00. How many notebooks can you buy with $14? Round your answer to the nearest

Otrada [13]

Answer:

Step-by-step explanation:

$0.75 + $3.00

$3.75

$14 ÷ $3.75

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2 years ago

Suppose that the probability that any particle emitted by a radioactive material will penetrate a certain shield is 0.01. If 10

AnnyKZ [126]

Answer:

a)P=0.42

b) $n\geq 297$

Step-by-step explanation:

We have a binomial distribution, since the result of each experiment admits only two categories (success and failure) and the value of both possibilities is constant in all experiments. The probability of getting k successes in n trials is given by:

$P=\begin{pmatrix}n\\ k\end{pmatrix} p^k(1-p)^{n-k}=\frac{n!}{k!(n!-k!)}p^k(1-p)^{n-k}$

a) we have k=2, n=10 and p=0.01:

$P=\frac{10!}{2!(10!-2!)}0.01^2(1-0.01)^{10-2}\\P=\frac{10!}{2!*8!}0.01^2(0.99)^{8}\\P=45*0.01^2(0.99)^8=0.42$

b) We have, $1-(1-p)^n=P$ , Here P is the probability that at least one particle will penetrate the shield, this probabity has to be equal or greater than 0.95. Therefore, this will be equal to subtract from the total probability, the probability that the particles do not penetrate raised to the total number of particles.

$1-0.99^n\geq 0.95\\0.99^n\leq 1-0.95\\0.99^n\leq 0.05\\n\geq 297$

4 0

3 years ago

Which expression is equivalent to 30(1/2x - 2) plus 40(3/4y-4)

nirvana33 [79]

Answer:

225

Step-by-step explanation:

7 0

4 years ago

Antione swam 42 laps in 7 minutes. Frank swam 48 laps in 8 minutes. Are

makkiz [27]

9514 1404 393

Answer:

Yes, these rates are equivalent because the unit rate of 6 laps per minute matches each rate.

Step-by-step explanation:

In each case we have ...

laps/minutes = (42 laps)/(7 minutes) = 6 laps/minute = (48 laps)/(8 minutes)

Yes, the rates are both 6 laps/min, so are equivalent.

8 0

3 years ago