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3 years ago

Which is an example of periodic motion?

1 answer:

6 0

I’m pretty sure the answer is B. Periodic motion is when the motion of an object is repeating itself, like back and forth or circling in an orbit and whenever you bounce a ball, you continuously bounce it back and forth.

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If Miguel types 40 words per minute and he types for 30 minutes how many words will he have typed total? *

krok68 [10]

Answer:

1200 words

Step-by-step explanation:

If he types 40 words a minute, you have to multiply that by thirty because he typed 40 words 30 timers. 40 x 30=1200

8 0

3 years ago

Read 2 more answers

There is a large number of cubes in a bag.

Alla [95]

Marked(10)/total = 3/20 (from sample)

total/10 = 20/3 (inverting the above proportion)

total = 10•20/3 = 200/3 ≈ 67

7 0

2 years ago

What are the possible values of x in x2 + 3x + 3 = 0?

e-lub [12.9K]

To solve a quadratic equation like $ax^2+bx+c=0$ , you can use the quadratic formula

$x_{1,2} = \cfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In your case, $a = 1, b = c = 3$ , so the formula becomes

$x_{1,2} = \cfrac{-3\pm\sqrt{(-3)^2-4\cdot 1\cdot 3}}{2\cdot 1}$

We can simplify the expression:

$x_{1,2} = \cfrac{-3\pm\sqrt{9-12}}{2} = \cfrac{-3\pm\sqrt{-3}}{2}$

Since -3 is negative, its square root is computed as

$\sqrt{-3} = \sqrt{-1\cdot 3} = \sqrt{-1}\sqrt{3} = \sqrt{3}i$

So, the solutions are

$x = \cfrac{-3+i\sqrt{3}}{2} \text{ or } x = \cfrac{-3-i\sqrt{3}}{2}$

4 0

3 years ago

Read 2 more answers

HELP WILL GIVE BRAINLIST!! ONLY 1 QUESTION!!!

Annette [7]

Answer:

an inch

Step-by-step explanation:

i mean. think about it. if u had it, ud just do one inch. did they say it had to be even? NO. so...

5 0

2 years ago

George had a score of 25 points in a game. During the rest of the game, he lost 59 points. What score did George have at the end

tensa zangetsu [6.8K]

Answer:

-34

Step-by-step explanation:

25-59=-34

He ended with -34

5 0

3 years ago