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3 years ago

Find the solution to the equation below. 2x^2+3x-20=0

Mathematics

2 answers:

icang [17]3 years ago

8 0

C maybe bro I’m not really sure tho think I’m messing up

Sphinxa [80]3 years ago

4 0

<h2>Answer:</h2>

<u>The right choice is </u><u>(D) x= -4, 5/2</u>

<h2>Step-by-step explanation:</h2>

2x^2+3x-20=0

By factoring the expression we get

2x²2 +8x−5x−20=0

(x+4) (2x−5) = 0

Now

(x+4) = 0 OR x = -4

and

(2x-5) = 0 OR x = 5/2

S the solutions are

x= -4 and x = 5/2

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The diameter of a semicircle is 6 miles. What is the semicircle's perimeter?

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Answer:

$15.42mi$

Step-by-step explanation:

Use the formula for a semicircle's perimeter.

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Plug in 6 for d.

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Answer:

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Step-by-step explanation:

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Eugenia walked all the way to school at 3 mph then realized she forgot her math book (how could she?!), so she ran back at 7 mph

kondor19780726 [428]

Let us say distance between Eugenia's home and school is x miles.

Speed of Eugenia when she walked from home to school = 3 mph

Speed of Eugenia when she walked from school to home = 7 mph

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$speed=\frac{distance}{time}$

$time=\frac{distance}{speed}$

Time taken by Eugenia when she walked from home to school = x/3 hours

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Total time taken = x/3+x/7

So forming an equation we have,

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Taking lcd of 7 and 3 as 21,

$\frac{7x}{21}+\frac{3x}{21}=0.75$

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9514 1404 393

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The range is the set of y-values in the ordered pairs. It is usually convenient to list a set in alphanumeric order.

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