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3 years ago

5

Mindy conducted a survey of the phones in 4 stores and wrote The Following observations:

1 answer:

balu736 [363]3 years ago

5 0

The first one is 75% i think I dont know if thats the answer though hold on and I'll get you the others

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A digital camera for 249.99 at 4% sales tax

spin [16.1K]

First round up 249.99 to 250.00

Then change the 4% into a decimal= 1.04

Now multiply so the equation is= 250 x 1.04 =

$260 as your answer!

4 0

3 years ago

What does pi r 2 mean

Neporo4naja [7]

Pi r² is circle's area expression.
So the r is radius,.

8 0

2 years ago

Read 2 more answers

2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a

Mariulka [41]

Answer:

$0.225 \Omega =225 m\Omega$

Step-by-step explanation:

We know (Ohm second law) that $R= \frac{k}{d^2}$ where k inlcudes the rest of the parameters (material, lenght). In our situation we have k= $0.4\cdot9 \Omega mm^2$ . The moment the diameter becomes 8mm R becomes

$R= {{0.4\cdot 9}\over{16}} \Omega = 0.225 \Omega$

4 0

2 years ago

Factor the expression over the complex numbers. x^2+72

neonofarm [45]

x^2 = -72 so x is $i*6\sqrt{2} or -i*6\sqrt{2}$

4 0

3 years ago

Read 2 more answers

Solve similar triangles (basic)

fiasKO [112]

Answer:

<em>T </em><em>=</em><em> </em><em>1</em><em>6</em>

Step-by-step explanation:

As triangles are similar

AB/DE = BC/EF = AC/DF

13.5/18 = 6/4 = 12/T

3/4 = 3/4 = 12/T

3/4 = 12/T

T = 12×4/3

T = 16

4 0

2 years ago