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2 years ago

<-- 50 points No Trolls please

Mathematics

2 answers:

vichka [17]2 years ago

5 0

Answer:

the correct answer is 1 because it looks like they are doing it by odd numbers.

hope this helps :)

Step-by-step explanation:

Artemon [7]2 years ago

4 0

The answer would be a.

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If a store advertisted a sale that gave customers a 1/4 discount,vwhat is the fractional part of the original price the customer

Dvinal [7]

3/4. 1/4 is taken off so 3/4 is left over.

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2 years ago

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The cost of a student ticket to the school play is $7. Write an equation that correctly relates the total cost, c, for a particu

Mazyrski [523]

C = $7s
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dependent variable ie the non changing variable is c

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2 years ago

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15+15+15=45 7+7+7=21 4+4+4=12 4+15×7=?

vesna_86 [32]

Answer:

109

Step-by-step explanation:

15+15+15= 45

7+7+7=21

4+4+4=12

4+15×7=109

I hope this helps!

3 0

3 years ago

A ball is thrown from a height of 38 meters with an initial downward velocity of 3 m/s

ANTONII [103]

<h2>Hello!</h2>

The answer is:

The ball will hit the ground after $t=2.47s$

Since we are given a quadratic function, we can calculate the roots (zeroes) using the quadratic formula. We must take into consideration that we are talking about time, it means that we should only consider positive values.

So,

$\frac{-b+-\sqrt{b^{2} -4ac} }{2a}$

We are given the function:

$h=-5t^{2}-3t+38$

Where,

$a=-5\\b=-3\\c=38$

Then, substituting it into the quadratic equation, we have:

$\frac{-b+-\sqrt{b^{2} -4ac} }{2a}=\frac{-(-3)+-\sqrt{(-3)^{2} -4*-5*38} }{2*-5}\\\\\frac{-(-3)+-\sqrt{(-3)^{2} -4*-5*38} }{2*-5}=\frac{3+-\sqrt{9+760} }{-10}\\\\\frac{3+-\sqrt{9+760} }{-10}=\frac{3+-\sqrt{769} }{-10}=\frac{3+-27.731}{-10}\\\\t1=\frac{3+27.731}{-10}=-3.073s\\\\t2=\frac{3-27.731}{-10}=2.473s$