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Hunter-Best [27]
3 years ago
11

7/8 times c for c = 8

Mathematics
2 answers:
slamgirl [31]3 years ago
8 0
\frac{7}{8} \times c \hbox{ for } c=8 \\ \\
\frac{7}{8} \times 8= 7 \times \frac{8}{8}=7 \times 1=\boxed{7}
Inga [223]3 years ago
5 0
The answer is 7!!!!!!!!!
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P(k)=a^k=2 3 4 find value of a that makes this is a valid probability distribution
Vesna [10]
Sounds like you're asked to find a such that

\displaystyle\sum_{k=2}^4\mathbb P(k)=\mathbb P(2)+\mathbb P(3)+\mathbb P(4)=1

In other words, find a that satisfies

a^2+a^3+a^4=1

We can factorize this as

a^4+a^3+a^2-1=a^3(a+1)+(a-1)(a+1)=(a+1)(a^3+a-1)=0

In order that \mathbb P(k) describes a probability distribution, require that \mathbb P(k)\ge0 for all k, which means we can ignore the possibility of a=-1.

Let a=y+\dfrac xy.

a^3+a-1=\left(y+\dfrac xy\right)^3+\left(y+\dfrac xy\right)-1=0
\left(y^3+3xy+\dfrac{3x^2}y+\dfrac{x^3}{y^3}\right)+\left(y+\dfrac xy\right)-1=0

Multiply both sides by y^3.

y^6+3xy^4+3x^2y^2+x^3+y^4+xy^2-y^3=0

We want to find x\neq0 that removes the quartic and quadratic terms from the equation, i.e.

\begin{cases}3x+1=0\\3x^2+x=0\end{cases}\implies x=-\dfrac13

so the cubic above transforms to

y^6-y^3-\dfrac1{27}=0

Substitute y^3=z and we get

z^2-z-\dfrac1{27}=0\implies z=\dfrac{9+\sqrt{93}}{18}
\implies y=\sqrt[3]{\dfrac{9+\sqrt{93}}{18}}
\implies a=\sqrt[3]{\dfrac{9+\sqrt{93}}{18}}-\dfrac13\sqrt[3]{\dfrac{18}{9+\sqrt{93}}}
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3 years ago
I need help using cosine and sine ratios to find the missing side lengths
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I hope this is helpful
8 0
4 years ago
Volume=<br> Help me please! Thank u so much I appreciate it
blsea [12.9K]

the volume of the oblique pyramid is 16 cubic units

<h3>How to determine the volume</h3>

The formula for finding the volume of a oblique pyramid is given as;

Volume = \frac{1}{3} × base area/ height

Where

base area = area of a right triangle

From the lengths of the triangle given, we can deduce that the opposite side is 24unit and the adjacent side or the base is 10 unit

let's put in the values to the formula

Base area = 10 × 24

Base area = 240 units

height = 5 units

Since we have both the height and the base area, let's find the volume

Volume = \frac{1}{3} × \frac{240}{5}

Volume = \frac{1}{3} × 48

Find the division

Volume = 16 cubic units

Thus, the volume of the oblique pyramid is 16 cubic units

Learn more about an oblique pyramid here:

brainly.com/question/24249430

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2 years ago
An urn contains 12 balls, five of which are red. Selection of a red ball is desired and is therefore considered to be a success.
SVEN [57.7K]

Answer:

2/10

Step-by-step explanation:

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3 years ago
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Miss Ortega is purchasing 3.4 pounds of trail mix that cost 4.25 per pound how much change will Miss Ortega receive if she gives
Elena-2011 [213]

Answer:

$5.55

Step-by-step explanation:

4.25 * 3.4 = $14.45

20 - 14.45 = $5.55

3 0
4 years ago
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