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expeople1 [14]
3 years ago
14

(8x − 5)(2x2 − 5x − 6)

Mathematics
1 answer:
Elodia [21]3 years ago
6 0

Answer:

(-5x - 2)(8x - 5)

I hope this helps!

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Which of the following is the Triangle Proportionality Theorem?
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A a line parallel to one side of a triangle divides the other two sides
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“a number n equals 7 more than half the number” can be written as what
sergiy2304 [10]

Answer:

Step-by-step explanation:

n=n/2 +7

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Graph the line containing the given pair of points and find the slope.<br> ​(​-2, 4​), ​(3, -2​,​)
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Slope: -6/5

The graph is below :

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3 years ago
Daniel wants to have a 90 average in his math class at the end of the year. He is trying to determine what he needs to get on hi
morpeh [17]
Exam + Tests + Quizzes + HW + Projects = 90

Exam = 10% * grade (x) = 0.1 * x 

Tests = 50% * 85 = 0.5 * 85 = 42.5

Quizzes  = 15% * 95 = 0.15 * 95 = 14.25

HW = 15% * 98 = 0.15 * 98 = 14.7

Projects = 10% * 92 = 0.1 * 92 = 9.2

Exam + Tests + Quizzes + HW + Projects = 90

(0.1 * x) + 42.5 + 14.25 + 14.7 + 9.2 = 90

(0.1 * x) + 80.65 = 90      
  (subtract 80.65 from each side)

(0.1 * x) = 9.35        
  (divide 0.1 from each side)

(0.1 * x)/0.1 = 9.35/0.1

x = 0.935

The answer is 93.5%


4 0
3 years ago
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exercise 1.3. a telephone number consists of ten digits, of which the first digit is one of 1;2;:::;9 and the others can be 0;1;
dezoksy [38]

Answer:

The probability that "0" appears at most once in a telephone number is 0.82

Step-by-step explanation:

Telephone number = 10 digits

First digit = (1,2......9)------> there are 9 possible digits

digit 2 - digit 10 = (0,1,2......9) -----> there are 10 possible digits

Let's find the total amount of telefone numbers with those characteristics:

possible first digit X possible second digit X...............X possible tenth digit

9X10X10X10X10X10X10X10X10X10 = 9X10^{9} = 9.000.000.000

Let's find the amount of telephone numbers that "0" appears at most once (it means 0 will occur either once or will not occur):

If "0" appears once, the rest of the numbers should be 1.2.....9 (9 possible digits)

9X10X9X9X9X9X9X9X9X9 =10X9^{9} = 3.874.204.809

If "0" doesn't appear, the ten digits should be 1,2....9

9X9X9X9X9X9X9X9X9X9 = 9^{10} =3.486.784.401

Finally, find the probability

P=(favorable outcomes/total outcomes)

P=\frac{3.874.204.890 + 3.486.784.401}{9.000.000.000} = 0.82

6 0
3 years ago
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