What is the correct answer

Mathematics

1 answer:

saw5 [17]3 years ago

8 0

Since the total number of songs is 46,

g + d = 46

This is the first equation.

Since the guitarist wrote 8 less than twice the number of songs written by the drummer,

g = 2d - 8

This is the second equation.

Therefore, the answer is F.

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What is the value of R in this circuit

goblinko [34]

See that messy ugly fraction on the right side of the equation ? Let's make it easier to write.

If we multiply the top and bottom of the fraction by the same thing, we won't change the value of the fraction. Let's multiply top and bottom by <em>R</em> .

The fraction 1 / (1/R + 1/2R)

Multiply top and bottom by R :

The fraction = R / (1 + 1/2) .

But that's just R/1.5 .

So 20 = R/1.5

Multiply each side of this equation by 1.5 , and you have . . .

This is not even a problem about electrical circuits or resistors. This is a problem about handling complicated fractions to make them less messy.

5 0

2 years ago

Find the highest common factor of 12 and 40<br>

levacccp [35]

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Take every common prime factor between 12 and 40

$\red {\large \implies} \large \: 12 \: = \: 2 \: \times \: 3 \: \times \: 2 \: \: \: \: \: \: \: \: \: \: \\ \\ \red {\large \implies} \large \:40 \: = \: 2 \: \times \: 2 \: \times \: 5 \: \times \: 2 \:$