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3 years ago

The formula, P=V^2/R,gives the relationship between resistance (R), voltage (V) and power (P). Solve the formula for Voltage

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Start by multiplying both sides by R to isolate V².
V² = P·R

Now, take the square root of both sides to get V.

V = √PR

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What is the value of 7x squared + 2x when x = 3

jolli1 [7]

So we know this expression:

7x^2 + 2x.

And we know x = 3.

(7*3)^2 + (2*3)

21^2 + 6.

441 + 6

447

7 0

3 years ago

HELPPPP!!! please!!!

natita [175]

By looking at the graph, we can see that the shape is a quarter of a circle.

The area of a circle is:

$a = \frac{1}{2} \pi {r}^{2}$

So, this "quarter circle" is:

$a = \frac{1}{4} \times \frac{1}{2} \pi {r}^{2}$

R is the radius (the diagram shows the radius is 8), so we can now find the area:

$a = \frac{1}{4} \times \frac{1}{2} \pi \times {8}^{2} \\ a = \frac{1}{8} \pi \times 64 \\ \\ a = \frac{64\pi}{8} \\ a = 8\pi$

The area is 8π.

7 0

3 years ago

Read 2 more answers

A product is made up of components A, B, C, D, E, F, G, H, I, and J. Components A, B, C, and F have a 1/10,000 chance of failure

Svetach [21]

Answer:

The overall reliability is 99.7402 %

Step-by-step explanation:

The overall reliability of the product is calculated as the product of the working probability of the components.

For components A,B,C and F we have :

$P(failure)=\frac{1}{10000}$

⇒

$P(Work)=1-\frac{1}{10000}=\frac{9999}{10000}=0.9999$

For components D,E,G and H we have :

$P(failure)=\frac{3}{10000}$

⇒

$P(Work)=1-\frac{3}{10000}=\frac{9997}{10000}=0.9997$

Finally, for components I and J :

$P(failure)=\frac{5}{10000}$

⇒

$P(Work)=1-\frac{5}{10000}=\frac{9995}{10000}=0.9995$

Now we multiply all the working probabilities. We mustn't forget that we have got ten components in this case :

Components A,B,C and F with a working probability of 0.9999

Components D,E,G and H with a working probability of 0.9997

Components I and J with a working probability of 0.9995

Overall reliability = $(0.9999)^{4}(0.9997)^{4}(0.9995)^{2}=0.997402$

0.997402 = 99.7402 %

6 0

3 years ago

Anna put $500 into a savings account and made no more deposits or withdrawals. The account earns 2% simple interest per year. Ho

marishachu [46]

Answer:

Step-by-step explanation:

What I did was 2 divided by 100 = 0.02 Then multiply 0.02 times 500 and you should get 10 then multiply by how many years of interest and you get 50

<h3>hope this helped!</h3>

4 0

3 years ago

What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)?

LekaFEV [45]

Something funny is that the x value of the vertex lies directl in the middle of the x intercepts
so
we see the x intercepts or 0's at x=8 and 2
the average is x=5
so find f(5) to find the y value of the vertex
f(5)=(5-8)(5-2)
f(5)=(-3)(3)
f(5)=-9

vertex is at (5,-9)

the actual way the teacher wants is to expand then compltete the square to get into the form f(x)=a(x-h)^2+k where the vertex is (h,k)
but whatever

verrtex is at (5,-9)

7 0

4 years ago