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2 years ago

12. The roots of a quadratic are x = -5 and x = 3.

1 answer:

8 0

3 , because, 8 think i because, so deinslfy and I have to do this for the next week or so and i and again to je to park on je road and then we Iz

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consider the numbers 4205 176 and 408 what is the difference in the values of the digit 4 in each number

Elodia [21]

The 4 in the first one is in the thousands place, the second one doesn't have a 4 and the 4 in the third one is in the hundreds place. Hope this helped.

7 0

2 years ago

Suppose we have an unfair coin that its head is twice as likely to occur as its tail. a)If the coin is flipped 3 times, what is

Alenkinab [10]

Answer: a) 0.2222, b) 0.3292, c) 0.1111

Step-by-step explanation:

Since we have given that

Let the probability of getting head be p.

Since, its head is twice as likely to occur as its tail.

$p+\dfrac{p}{2}=1\\\\\dfrac{3p}{2}=1\\\\p=\dfrac{2}{3}$

a)If the coin is flipped 3 times, what is the probability of getting exactly 1 head?

So, here, n = 3

$p=\dfrac{2}{3}$

$q=\dfrac{1}{3}$

Now,

$P(X=1)=^3C_1(\dfrac{2}{3})^1(\dfrac{1}{3})^2=0.2222$

b)If the coin is flipped 5 times, what is the probability of getting exactly 2 tails?

2 tails means 3 heads.

So, it becomes,

$P(X=3)=^5C_3(\dfrac{2}{3})^3(\dfrac{1}{3})^2=0.3292$

c)If the coin is flipped 4 times, what is the probability of getting at least 3 tails?

$P(X\leq 1)=\sum _{x=0}^1^4C_x(\dfrac{2}{3}^x(\dfrac{1}{3})^{4-x}=0.1111$

Hence, a) 0.2222, b) 0.3292, c) 0.1111

8 0

2 years ago

Carol has had a $145,000 fixed mortgage for 5 years at 5.5% and is

irina1246 [14]

Answer: no the two blended interest rates are the same

Step-by-step explanation:

5 0

2 years ago

The expression to find the perimeter of a rectangle is 2(length + width). What is the perimeter, in units, of a rectangle of len

stiks02 [169]

That is 2(1/7 + 1/2)

= 2( 2/14 + 7/14)

= 2 * 9/14

= 18/14 = 9/7 units ( or 1 2/7 units)

8 0

2 years ago

One spinner is divided into five equal sections numbered 1 to 5. A second spinner is divided into seven equal sections numbered

White raven [17]

Spinning the first and second spinner will give 5 and 7 outcomes, respectively. To determine the total combinations or total outcome if these two are spun, use the <em>Fundamental Principles of Counting</em>. The total outcome is the product of the two outcomes. Thus, the answer is 35.

7 0

3 years ago

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