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3 years ago

I need help on this question!!!ASAP!!!

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

6 0

Answer:

the brother has a 1/5 chance to be at the front of the line.

Step-by-step explanation:

nirvana33 [79]3 years ago

3 0

Answer: 1 out of 5

Step-by-step explanation: since their are 5 family members

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How do I solve this please? Can SOMEONE please help me this and the ones Iposted on my page.

vagabundo [1.1K]

Answer: $\dfrac{15}{64}$

Step-by-step explanation:

Given

Inside radius of figure $r_1=\frac{14}{2}=7\ ft$

Outside radius of figure $r_2=\frac{16}{2}=8\ ft$

Area of outside region is $A_1=\pi (8^2)$

Area of inside region $A_2=\pi (7)^2$

Area of shaded region $A_1-A_2$

Probability that point lies inside the shaded region is

$\Rightarrow P=\dfrac{A_1-A_2}{A_1}\\\\\Rightarrow P=\dfrac{\pi (8^2-7^2)}{\pi 8^2}\\\\\Rightarrow P=\dfrac{64-49}{64}\\\\\Rightarrow P=\dfrac{15}{64}$

5 0

3 years ago

Suppose that $8500 is placed in an account that pays 12% Interest compounded each year.

Nitella [24]

A) 7480$ will be in the account at the end of one year.
B) $6460 will be in the account at the end of 2 years.

3 0

3 years ago

There are 1,000 fish in a lake. Each year the population declines by 15%, but afterward, the lake is restocked with 500 aditiona

KatRina [158]

We begin with 1,000 fish in a lake.
Each year the population declines to 15%
Then they put back 500 fish in the lake.

The equation: (1000 * .85) +500

4 0

3 years ago

Makovka662 [10]

Answer:

Option A ( -3/2 , $\frac{-3\sqrt{3} }{2}$ )

Step-by-step explanation:

According to Question, The Spinner Rotate 600* Thus after Completing 360* it Comes Exactly Where It Started . Now again rotate It 180* .

Now We Are on ( -X axis ) & Completed 360*+180*=540* Rotation

Now After Rotate It 60* More we come in Third Quadrant & Here In Third Quadrant Only Tangent & Cotangent Is Positive .(Sine & Cosine is Negative)

(For Diagram, Please Find in attachment)

Now In Triangle OAB

Cos60* = OA / OB

1/2 = -X / 3 Thus X= -3/2

Sin60* = AB / OB

$\sqrt{3}$ /2 = -Y / 3 Thus Y = - $\sqrt{3}$ * 3 /2

6 0

3 years ago

Which of the following is a factor of f(x) = 3x3 + 8x2 − 87x + 28?

mart [117]

Factoring a trinomial is a tedious process, sometimes involving a trial-and-error process. The best approach would be to try out all the choices, replace them with x, and see if it satisfies the equation to be equal to zero. Since no choice are given, we use another technique: by using the scientific calculator under mode EQN (equation).

Once you're in mode EQN, choose the trinomial (ax^3 + bx^2 +cx +d =0).Then, all you have to do is substitute the coefficients (a=3, b = 8, c = -87, d = 28). Press equals, then the three roots would appear.

The roots, and therefore factors, are -7, 4 and 1/3. Any of those are factors of the given equation.

4 0

4 years ago

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