91 IS THE AREAS OF THE SIX RECTANGLES
Answer:
x=(3/5) + (3√6)i/10, and x =(3/5) - (3√6)i/10
Step-by-step explanation:
Use the quadratic formula for ax² +bx +c=0
x= [-b±√(b²-4ac)]/2a
For, -10x² +12x -9 = 0
x= [-12 ±√(12²-4(-10)(-9)] /2(-10)
x= [-12 ±√(144-360)] /-20
x= [-12 ±√(144-360)] /-20
x= (-12 ±i√216) /-20
x= (-12 ±i6√6) /-20
so one solution will be
x= (-12 +i6√6) /-20
= (3/5) - (3√6)i/10
the second solution will be
x= (-12 - i6√6) /-20
= (3/5) + (3√6)i/10
The prime factorization of 240 is 2 x 2 x 2 x 2 x 3 x 5
The easy way I was taught how to find the product of primes is: Draw a vertical line. On the left write your number. On the right, write the smallest Prime number that is a factor of this number (i.e ask, does it divide by 2? If the answer is no, then ask does it divide by 3, 5, 7 etc etc until you find a number that does). Then divide the number on the left by the number on the right and write it under the number on the left. Repeat this process until the number on the left is equal to the number on the right (i.e. a prime number).
eg, for 240:
240 | 2
120 | 2
60 | 2
30 | 2
15 | 3
5 | 5
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➷ (12/20) = 0.6
(8/20) = 0.4
The experimental probability of the coin landing heads up is 0.6.
B) The theoretical would be considering it a fair coin.
1/2 = 0.5
The theoretical probability would be 0.5
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Answer:
x-12
Step-by-step explanation:
(x+12)*(x-12)
x*x=x²
12x-12x=0
12*-12=-144