2 years ago

Solve the system of equations below.

Mathematics

1 answer:

Andreas93 [3]2 years ago

6 0

It is c and your welcome

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22.857142857142858 As a fraction

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Step-by-step explanation:

1. The answer is 8/35.

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(d) h = 2A/b

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Find the volume of the regular pyramid given that 12 cm is the height of the pyramid.

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Step-by-step explanation:

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3 years ago

Read 2 more answers

8 times of the eight term of an arithmetic progression is equal to 12 times of the twelfth term. find its first term if the comm

Ilya [14]

Answer:

a₁ = 38

Step-by-step explanation:

Given AP, where:

8a₈ = 12a₁₂
d = -2,
a₁ = ?

=============

<h3>Solution</h3>

aₙ = a₁ + (n-1)d

a₈ = a₁ + 7d = a₁ + 7*(-2) = a₁ - 14
a₁₂ = a₁ + 11d = a₁ + 11*(-2) = a₁ - 22

8a₈ = 12a₁₂

8(a₁ - 14) = 12(a₁ - 22)
2(a₁ - 14) = 3(a₁ - 22)
2a₁ - 28 = 3a₁ - 66
3a₁ - 2a₁ = -28 + 66
a₁ = 38

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2 years ago