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tester [92]
3 years ago
7

Why is 743 a prime number

Mathematics
1 answer:
bonufazy [111]3 years ago
7 0
743 is a prime number because it has no other positive divisors besides one and itself.
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Choose the equivalent system of linear equations that will produce the same solution as the one given below:
skelet666 [1.2K]
D is the answer as the both have solution x=-2 y=3
14x=-28       12(-2)-3y=-33
x=-2              -3y=-9
                       y=3
from the given equation
4x-y=11 eq 1
2x+3y=5 eq 2
x=y-11/4 from equation 1
subsitute this value of x in equation 2
2(y-11/4)+3y=5
y-11+6y=10
7y-11=10
y=3
subsitude this value of y in equation (x=y-11/4)
so x= -2 
thus same solution so ANSWER IS D
3 0
3 years ago
Please answer the following thanks
Studentka2010 [4]
F(-5) is 23-D
Line change is B
7 0
3 years ago
Read 2 more answers
In a version of the game of roulette, a steel ball is rolled onto a wheel that contains 19 red, 19 black and 2 green slots. If t
trasher [3.6K]

Answer:

The probability is 0.3576

Step-by-step explanation:

The probability for the ball to fall into the green ball in one roll is 2/1919+2 = 2/40 = 1/20. The probability for the ball to roll into other color is, therefore, 19/20.

For 25 rolls, the probability for the ball to never fall into the green color is obteined by powering 19/20 25 times, hence it is 19/20^25 = 0.2773

To obtain the probability of the ball to fall once into the green color, we need to multiply 1/20 by 19/20 powered 24 times, and then multiply by 25 (this corresponds on the total possible positions for the green roll). The result is 1/20* (19/20)^24 *25 = 0.3649

The exercise is asking us the probability for the ball to fall into the green color at least twice. We can calculate it by substracting from 1 the probability of the complementary event: the event in which the ball falls only once or 0 times. That probability is obtained from summing the disjoint events: the probability for the ball falling once and the probability of the ball never falling. We alredy computed those probabilities.

As a result. The probability that the ball falls into the green slot at least twice is 1- 0.2773-0.3629 = 0.3576

5 0
3 years ago
the capacity of a school swimming pool is 243m cubed. An olympic pool is 50 m long, 25 m wide and 2 m deep, How much greater is
sveticcg [70]

Answer:

2257m3

Step-by-step explanation:

50x25x2=2500

2500-243=2257

6 0
2 years ago
I need helppp what’s the answerrr?!!?
nevsk [136]

Answer:

3,240

Step-by-step explanation:

6 0
2 years ago
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