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4 years ago

A fair spinner has 9 equal sections: 2 red, 3 blue and 4 green.

Mathematics

1 answer:

Alex17521 [72]4 years ago

3 0

Answer:

The Probability of not getting two consecutive reds is 0.9506

Step-by-step explanation:

Number of sections = 9

Number of red sections = 2

Number of blue sections = 3

Number of green sections = 4

Probability of getting two consecutive reds = $\frac{2}{9} \times \frac{2}{9}=\frac{4}{81}$

So,The Probability of not getting two consecutive reds = $1- \frac{4}{81}=\frac{77}{81}=0.9506$

Hence The Probability of not getting two consecutive reds is 0.9506

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Please help i will give brainly?

Eva8 [605]

Answer: $141.75

Explanation:

8:00-> 12:00= 4 hours

12:45->17:30= 5.45 hours

4+5.45=9.45 hours

9.45 x 15 = 141.75

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2 years ago

Use the point-slope formula to write an equation of the line that passes through (-5, -4) and (3, -1).

aalyn [17]

Answer:

point slope form: y + 4 = 3/8 (x + 5) slope intercept: y = 3/8x - 17/8

Step-by-step explanation:

y2 - y1 / x2 - x1

-1 - (-4) / 3 - (-5)

slope = 3/8

y + 4 = 3/8 (x + 5)

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8 0

3 years ago

CAN SOMEONE HELP PLZ

Vlad1618 [11]

Answer:

Step-by-step explanation:

The solution to the system (c , p) represent the cost of each hot cocoa is c and the cost of each pretzel is p

Nothing changed just two equations were added to form another third equation which represent the total cost of 7 cups of hot cocoa and 8 pretzels

so the solution (c , p) would still be the same as the solution represents cost of each cup of hot cocoa c and cost of each pretzel p

No adding both the equations does not help us solve the equation, It just forms another equation further making the question longer and the third equation is not needed because to solve a system of equations with 2 variables to equations are enough, in this case c and p To solve the system of equations we multiply the first equation with 2 and the second equation with 5 and then subtract equation 1 from equation 2

$Equation\ 1 \\\\5c+4p=18.40\\Multiplying\ it\ with\ 2\\10c+8p=36.8\\\\Equation\ 2\\\\2c+4p=11.20\\Multiplying\ equation\ 2\ with\ 5\\10c+20p=56\\\\Now\ subtract\ equation\ 2\ from\ equation\ 1\\\\10c-10c+8p-20p=36.8-56\\0-12p=-19.2\\-12p=-19.2\\p=-19.2/-12\\p=1.6\\$

Now for the value of c we insert the value of p in any equation, lets insert it in equation 1

$5c+4p=18.40\\5c+4(1.6)=18.40\\5c+6.4=18.40\\5c=12\\c=12/5\\c=2.4$

7 0

3 years ago

one side of a right angled triangle is 10cm the other two are both of length x calculate x to 2 decimal place

shepuryov [24]

Answer: $x = 7.07$

Step-by-step explanation:

Using Pythagoras theorem , since it is a right angled triangle ,

side 1 = 10cm

side 2 = x cm

side 3 = x cm

Pythagoras theorem states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides. That is

$10^{2}=x^{2} +x^{2}$