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raketka [301]
2 years ago
10

You have $190 to buy 8 model trains for

Mathematics
1 answer:
lubasha [3.4K]2 years ago
6 0

Answer:

8x; x ≤ $23.75

Step-by-step explanation:

You have to buy 8 trains with 190 dollars. You can't use more money or have more trains.

8x ≤ 190

Divide by 8 on both sides.

x ≤ $23.75 per train

Your welcome!

Kayden Kohl

8th Grade Student

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tamaranim1 [39]

Answer:

t \approx 0.43\,s

Step-by-step explanation:

The vertical displacement function is y(t) = -4.9\cdot t^{2}-3.5\cdot t + 2.4, where y(t) is measured in meters and t in seconds. Ball hits the ground when y(t) = 0. That is:

-4.9\cdot t^{2}-3.5\cdot t + 2.4 = 0

Whose roots can be found by using the General Formula for Second-Order Polynomials:

t_{1,2} = \frac{3.5\pm \sqrt{(-3.5)^{2}-4\cdot (-4.9)\cdot (2.4)} }{2\cdot (-4.9)}

Solutions of this polynomial are:

t_{1} \approx 0.43\,s,t_{2} \approx -1.14\,s

Only the first root is physically consistent.

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3 years ago
There is a specialty store that you like to go to when you are craving jelly beans. The price is reasonable at $1.30 per pound.
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3 years ago
Read 2 more answers
3^3 . x^2- 25 divided by 5 when x= 0.6
Alenkasestr [34]

Hey there!

3^3 * x^2 - 25 / 5

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= 9.72 - 25 / 5

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Therefore, your answer is: 4.72


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

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