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Butoxors [25]
3 years ago
7

A child throws a ball up in the air to a height of 3.5 m and catches it at the same point from which he threw it. The ball is in

the air for a total of 1.7 s. What is the average velocity of the ball?
Mathematics
1 answer:
dimaraw [331]3 years ago
5 0
S = 3,5 + 3,5 = 7 m \\ V =  \frac{\triangle S}{\triangle T} =  \frac{7}{1,7}  \approx 4,12  \frac{m}{s}
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Vesnalui [34]

Answer:

to solve this we do the oppisite of multiplication which is division

so 84 divided by 12 = 7 so that means that our mysterious k = 7

so reprhase  the sentence so  '' The product of 12 and 7 is 84

hope this helps:)

Step-by-step explanation

8 0
3 years ago
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Anna11 [10]

Answer:

2 real solutions

Step-by-step explanation:

Remember this messy thing?

x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

The <em>quadratic formula</em>, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the <em>type</em> of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the <em>discriminant</em>. If it's non-negative, we'll have <em>real</em> roots, if it's negative, we'll have <em>complex roots</em>.

For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.

4 0
3 years ago
Class be boring but anyways what is ( 2 x 2 − 1 )?
mina [271]

Answer:

3

Step-by-step explanation:

In order to do this equation, your first step is to use the Order of Operations, or PEMDAS, which means that you multiply (M) two times two first before subtracting the equation (S). 2 times 2 is 4.  4 - 1 = 3. Hope I helped! :)

5 0
3 years ago
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Anvisha [2.4K]
I’m pretty sure it’s -1
How you solve this is y2-y1/x2-x1
So 5-2/-3-1 which would be -1
4 0
2 years ago
Please help as fast as possible.
ankoles [38]

Answer:

B 7.3

Step-by-step explanation:

1/4 times 24 is 24/4 which is 6 plus 1.3 is 7.3 your answer is B

Hope I helped :]

3 0
2 years ago
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