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3 years ago

It cost Brody $9.80 to send 196 text messages. How many text messages did he send if he spent $4.20? *

Mathematics

1 answer:

Dvinal [7]3 years ago

3 0

Answer:

Step-by-step explanation:

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What is the constant rate

dedylja [7]

The answer is Cu = X times 2.5

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4 years ago

Please help me out :)

arlik [135]

Answer:

$\frac{\sqrt{17} }{7}$

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = $\sqrt{1-cos^2x}$

Note that ( $\frac{4\sqrt{2} }{7}$ )² = $\frac{32}{49}$

sinΘ = $\sqrt{1-(32/49)}$

= $\sqrt{\frac{17}{49} }$ = $\frac{\sqrt{17} }{7}$

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3 years ago

The quotient of m and 11 minus 3 as a algebraic expression

PilotLPTM [1.2K]

(m/11) - 3
Doing the quotient first so I put it in parenthesis, then subtract 3

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3 years ago

If a 100 m. diameter wind turbine is exposed to 7 m/s wind with an air density of 1.25 kg/m what is the electricity produced by

Yuliya22 [10]

Answer:

electric energy = 980 J

Step-by-step explanation:

Given,

Diameter of wind turbine = 100 m

Speed of wind,v = 7 m/s

Density of air = 1.25 kg/m

Hence, the total mass of air enters into turbine =Speed of wind x Diameter of wind turbine

= 1.25 x 100

= 125 kg

Hence, total mechanical energy of turbine can be given by,

$E\ =\ \dfrac{1}{2}.m.v^2$

$=\ \dfrac{1}{2}\times 125\times 7^2$

= 3062.5 J

Efficiency of turbine = 32%

Hence,

total electric energy = 32% of mechanical energy

$=\dfrac{32}{100}\times 3062.5\ J$

= 980 J

So, the total electric energy produced by the turbine will be 980 J.

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3 years ago

What percent of the muffins were carrots

Readme [11.4K]

Answer:

Step-by-step explanation:

Muffins aren't carrots, unless they are carrot muffins.

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3 years ago