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Diano4ka-milaya [45]
2 years ago
14

Oscar and Maria each wrote an equation that they felt represented the proportional relationship between distance in kilometers a

nd distance in miles. One entry in the table paired 152 km with 95 miles. If represents the number of kilometers and represents the number of miles, who wrote the correct equation that would relate kilometers to miles? Explain why.
Oscar wrote the equation = 1.6, and he said that the unit rate fraction numerator 1.6 over denominator 1 end fraction represents kilometers per mile.



Maria wrote the equation = 0.625 as her equation, and she said that 0.625 represents kilometers per mile.



Who is correct?
Mathematics
1 answer:
MatroZZZ [7]2 years ago
6 0

Answer: your mom

Step-by-step explanation:your mom

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An object is thrown straight up from the top of a 100-foot platform at a velocity of 48 feet per second. The height h(t) of the
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Answer:

  • The maximum height is 136 ft
  • The time it takes to achieve this height is 1.5 s.

Explanation:

<u>1. Function for the height (given):</u>

    h(t)=-16t^2+48t+100

<u />

<u>2. Type of function</u>

That is a quadatic function, whose graph is a parabola that opens downward.

The maximum of the function, i.e. the maximum height, is the vertex of the parabola.

The vertex of a parabola with the genral equation   y=ax^2+bx+c  is at the x-coordinate

                       x=-b/(2a)

<u>3. Time to achieve the maximum height</u>

Substitute b with 48 and a with - 16:

        t=-48/(2(-16))=48/32=3/2=1.5

Then, time when the object achieves the maximum height it 1.5s

<u />

<u>4. Maximum height:</u>

Replace t with 1.5 in the equation, to find the maximum height, h(1.5)

     h(1.5)=-16(1.5)^2+48(1.5)+100=136

Then, the maximum height is 136 ft

3 0
3 years ago
DeanR where.are youuu i need ur helppppppp
Tatiana [17]

Do the formula length times width times height.

Then, round like you normally would!

And for the second one, just multiply 2.5 x 6!

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Answer:

D. y = 5\cdot \Sigma_{i=0}^{4} \left(\frac{1}{3} \right)^{i}

Step-by-step explanation:

Let be y = \Sigma_{i = 0}^{4} \left[5\cdot \left(\frac{1}{3} \right)^{i}\right]. To find the equivalent expression we must use the following property:

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