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2 years ago

14

Which instrument sends back radio signals to Earth about temperature at various heights in the atmosphere? A. weather balloon B.

radar C. sunscope D. barometer

Advanced Placement (AP)

2 answers:

USPshnik [31]2 years ago

6 0

I'm more than sure it's A. weather balloon.

Margaret [11]2 years ago

5 0

I am really sure that it is a.Tell me if it’s correct

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1. Carol owns Virgil’s Electrical Corporation. She needs an electrician and is placing a nine line classified ad. The cost of an

olchik [2.2K]

Answer:

The cost of 9 line ad is #52

Explanation:

Given

$f(x) = 28$ --- $x \le 3$

$f(x) = 28 + 4(x - 3)$ --- $x > 3$

Required

The cost of a 9 line ad

This means that:

$x = 9$

To calculate the cost, we make use of:

$f(x) = 28 + 4(x - 3)$ --- $x > 3$

Because $9 > 3$

So, we have:

$f(x) = 28 + 4(x - 3)$

$f(9) = 28 + 4 * (9 - 3)$

$f(9) = 28 + 4 * 6$

$f(9) = 28 + 24$

$f(9) = 52$

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3 years ago