All categories

3 years ago

Answer it correctly:)can anyone help me?:)

Mathematics

1 answer:

lara [203]3 years ago

8 0

Answer:

JAR WITH MARBLES.

There's

5 Blue Marbles

3 Red Marbles

2 Yellow Marbles

Pr = No of desired outcome/No of Possible Outcomes

No of Possible Outcomes = 10.

1. Pr(yellow) = 2/10 = 1/5.

2. Pr(Red) = 3/10

3. Pr(Blue) = 5/10 = 1/2

4. Pr(Yellow and Red) = 2/10 x 3/10 = 6/100 = 3/50.

5.Pr(Blue and Red)= 5/10 x 3/10 = 15/100 = 3/20.

6.Pr( Yellow and Blue) = 2/10 x 5/10 = 10/100 = 1/10.

THE CHIPS ARE PLACED IN A JAR AND MIXED.

No of Possible Outcomes = 8.

The Numbers are 1,2,3,4,5,6,7,8.

There's

4 Even Numbers

4 Odd Numbers

1. Pr(Even) = 4/8 = 1/2

2. Pr(Odd) = 4/8 = 1/2

3. Pr(Chip with Biggest No) = 1/8.

Reason. There can only be one Number which Is the biggest amongst all. So the Probability of picking it is 1.

4.Pr(Smallest Number) = 1/8 (Same concept).

5.Pr(Prime Number)

The prime Numbers above are 2,3,5,7

Pr(Prime) = 4/8 = 1/2.

Hope this helps!.

You might be interested in

9/20

Stella [2.4K]

Question:

Find the number of real number solutions for the equation. x^2 + 5x + 7 = 0

Answer:

The number of real solutions for the equation $x^{2}+5 x+7=0$ is zero

Solution:

For a Quadratic Equation of form : $a x^{2}+b x+c=0$ ---- eqn 1

The solution is $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Now , the given Quadratic Equation is $x^{2}+5 x+7=0$ ---- eqn 2

On comparing Equation (1) and Equation(2), we get

a = 1 , b = 5 and c = 7

In $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ , $b^2 - 4ac$ is called the discriminant of the quadratic equation

Its value determines the nature of roots

Now, here are the rules with discriminants:

1) D > 0; there are 2 real solutions in the equation

2) D = 0; there is 1 real solution in the equation

3) D < 0; there are no real solutions in the equation

Now let solve for given equation

$D= b^2 - 4ac\\\\D = 5^2 - 4(1)(7)\\\\D = 25 - 28 \\\\D = -3$

Since -3 is less than 0, this means that there are 0 real solutions in this equation.

4 0

4 years ago

Jordan volunteered for the same amount of time each day for 7 days. If he volunteered for 329 minutes altogether, how many minut

AVprozaik [17]

Answer:

Step-by-step explanation:

Just divide 329 by 7

That gives you 47

3 0

3 years ago

What does a straight angle look like

Ksivusya [100]

Answer:

A straight angle is an angle of 180 degrees, so it looks like follows

4 0

1 year ago

Read 2 more answers

A car is advertised with a price of $16336. The payment plan to own a car is $474 per month for 8 years. What is the

beks73 [17]

The interest rate is about 32.045%.

6 0

3 years ago

Find the circumference of this circle using 3 for 7. C ~ [?] 2. C = 27r

ZanzabumX [31]

Answer:

C = 12.

Step-by-step explanation:

Given :-

Radius of circle , r = 2.
Value of pi, π = 3

To find :-

Circumference of circle

Formula for finding circumference of circle;

Circumference of circle = 2 × π × radius.

Solution :-

Circumference of circle = 2 × π × radius.

Substitute the value of radius into the formula.

Circumference of circle = 2 × π × 2

Multiply ; 2 × 2

Circumference of circle = 4 π.

plug 3 as π.

Circumference of circle = 4 × 3

Multiply to get

Circumference of circle = 12

5 0

3 years ago

Read 2 more answers

Answer it correctly:)can anyone help me?:) ​

Answer it correctly:)can anyone help me?:)