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3 years ago

Easy prealgebra.. really struggling!

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

6 0

Answer:

= 3/4

Step-by-step explanation:

WX = 9

W = 12

12X = 9

Divide both sides by 12

12X/12 = 9/12

X = 9/12 - Simplify

X = 3/4

X is located at 3/4

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<img src="https://tex.z-dn.net/?f=0%20%3D%20%20%20-%204.9t%20%7B%7D%5E%7B2%7D%20%20%2B%2027t%20%2B%202.4" id="TexFormula1" title

marta [7]

$0 = - 4.9t {}^{2} + 27t + 2.4$
Convert decimals to fractions

$0 = - \frac{49}{10} t {}^{2} + 27t + \frac{12}{5}$
Multiply both sides by 10

$0 = - 49t {}^{2} + 270t + 24$
Move expression to the left.

$0 + 49t {}^{2} - 270t - 24 = 0$
Remove zero.

$49t {}^{2} - 270t - 24 = 0$ Solve the quadratic equation.

$t = \frac{ - ( - 270) + - \sqrt{( - 270) {}^{2} - 4 \times 49 \times ( - 24) } }{2 \times 49}$
Remove parenthesis and calculate.

$t = \frac{270 + - \sqrt{72900 + 4704} }{98}$
Add the numbers

$t = \frac{270 + - 77604}{98}$
Separate the solutions

$t = \frac{270 + \sqrt{77604} }{98} \\ t = \frac{270 - \sqrt{77604} }{98}$
The final solution are
$t1 = \frac{270 - \sqrt{77604} }{98} , t2 = \frac{270 + \sqrt{77604} }{98}$

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3 years ago

List three ways you can use an electric current. Describe the energy Chang that takes place

Crazy boy [7]

Three ways you can use an electric current:
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2. to produce heat
3. using a power tool
4. chargers

If the two requirements of an electric<span> circuit are met, then charge will flow through the external circuit. Causing a </span> flow of electric charge to power any machine or device, etc.

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Harrizon [31]

J is the correct answer

$180 - (90 + 20) = 180 - 110 \\ = 70$

good luck

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Answer:

Step-by-step explanation:

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Answer:

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