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Inessa [10]
2 years ago
9

What is the value of fraction 1 over 3x2 + 5.2y when x = 3 and y = 2?

Mathematics
2 answers:
LenaWriter [7]2 years ago
4 0
\dfrac{1}{3}x^2+5.2y\\\\for\ x=3\ and\ y=2\\\\\dfrac{1}{3}\cdot3^2+5.2\cdot2=\dfrac{1}{3}\cdot9+10.4=\dfrac{9}{3}+10.4=3+10.4=13.4
GrogVix [38]2 years ago
3 0

Answer:

B. 13.4

Step-by-step explanation:

We have the fraction, L=\frac{1}{3}x^2+5.2y.

It is required to find the value of the fraction when x = 3 and y = 2.

So, on substituting these values, we get,

L=\frac{1}{3}(3)^2+5.2\times 2

i.e. L=\frac{9}{3}+10.4

i.e. L=3+10.4

i.e. L=13.4

So, the value of the fraction is 13.4

Hence, option B is correct.

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Answer:

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Step-by-step explanation:

GIVEN :- <em>Time taken by family to travel 600 km is 8 hours</em>

CALCULATIONS :-

<em>To calculate the time to travel 2100 km, we need to calculate distance traveled in 1 hour</em>

<em>Distance traveled in 1 hour = 600 km ÷ 8</em>

<em>                                              = 75 km</em>

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Therefore time required to travel 2100 km is 28 hours.


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Answer:

-3/2

Step-by-step explanation:

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