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3 years ago

I don’t understand!!!

Mathematics

1 answer:

marishachu [46]3 years ago

8 0

Answer:

Step-by-step explanation:

We can use momentum and conservation of momentum equation to solve this problem. The equation would be:

$m_1v_1+m_2v_2=(m_1+m_2)v_3$

m_1 is given as 2

v_1 is given as 3

m_2 is what we want

v_2 is 0 since they are sticking together after collision

v_3 is the final velocity at the resultant end, which is 1

Substituting and solving via algebra:

$m_1v_1+m_2v_2=(m_1+m_2)v_3\\(2)(3)+m_2(0)=(2+m_2)(1)\\6+0=2+m_2\\6=2+m_2\\m_2=6-2=4$

Thus, mass of 2nd box is 4kg

Answer choice A is right

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Answer:

y = 2x³ + x² - 4x + 6

Step-by-step explanation:

General formula:

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If you replace point (0, 6) in the general formula, you get:

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If you replace points (-1, 9), (1, 5) and (2, 18) in the general formula, you get the following system of equations:

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18 = 8a + 4b + 2c + 6 (eq. 3)

Adding equation 1 to equation 2:

14 = 2b + 12

(14 - 12)/2 = b

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Multiplying equation 1 by 2:

18 = -2a + 2b - 2c + 12 (eq. 4)

Adding equation 4 to equation 3, and replacing with b value:

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3 years ago

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Answer:

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Step-by-step explanation:

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The state fair is a popular field trip destination. This year the senior class at High School A and the senior class at High Sch

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Answer:

The number of students in each van = 14

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Let the number of students that can fill a van be v.

Let the number of students that can fill a bus be b.

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