2 years ago

What is the distance, in units, between the points (-4,5) and (8,0) in the

Mathematics

1 answer:

Anna71 [15]2 years ago

8 0

Answerrrrrrrrrrrrrrrr isssssssss: 5.38

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Mashcka [7]

Answer: 201 is the correct answer

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2 years ago

If 2x^2+2x=12, what is x?

Rainbow [258]

Answer:

x= 2

x= -3

Step-by-step explanation:

Solving as normal quadratic equation:

2x^2+2x=12
x^2 +x = 6
x^2 + x - 6= 0
x = (-1 ± √(1+4*1*6)/2
x = ( - 1 ± √25)/2
x = (-1 ± 5)/2
x= 2
x= -3

Roots are 2 and -3

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2 years ago

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Please help I don’t get it!!! 3(-x+2)

Dennis_Churaev [7]

Answer:

-3x + 6

Step-by-step explanation:

Distribute the 3 across the parentheses, like you are multiplying. 3 x (-x) = -3x and 3 x 2 = 6. Then write as an expression.

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1 year ago

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Interval is 0, 2pi) 4 sin^2x-4 sin x + 1 = 0

svetoff [14.1K]

Answer:

$\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}}$

Step-by-step explanation:

$4\sin^2x-4\sin x+1=0\\\\2^2\sin^2x-2(2\sin x)(1)+1^2=0\\\\(2\sin x)^2-2(2\sin x)(1)+1^2=0\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(2\sin x-1)^2=0\iff2\ain x-1=0\qquad\text{add 1 to both sides}\\\\2\sin x=1\qquad\text{divide both sides by 2}\\\\\sin x=\dfrac{1}{2}\to x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}$

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2 years ago

If it takes 5 hours to travel 200 miles to the beach, what is the average speed?

Anni [7]

Average speed = total distance/ time taken

= 200/5 = 40 miles per hour.

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2 years ago