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2 years ago

Solve for x. -4.5 (x - 8.9) = 12.6 Enter your answer, as a decimal, in the box.

2 answers:

7 0

For a Brainliest?

<span>Simplifying 21.5x + -7.7 + -12.6x + 17 = 0 Reorder the terms: -7.7 + 17 + 21.5x + -12.6x = 0 Combine like terms: -7.7 + 17 = 9.3 9.3 + 21.5x + -12.6x = 0 Combine like terms: 21.5x + -12.6x = 8.9x 9.3 + 8.9x = 0 Solving 9.3 + 8.9x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9.3' to each side of the equation. 9.3 + -9.3 + 8.9x = 0 + -9.3 Combine like terms: 9.3 + -9.3 = 0.0 0.0 + 8.9x = 0 + -9.3 8.9x = 0 + -9.3 Combine like terms: 0 + -9.3 = -9.3 8.9x = -9.3 Divide each side by '8.9'. x = -1.04494382 Simplifying x = -1.04494382</span>

ollegr [7]2 years ago

5 0

I believe that the answer would be 26. First, put 26 for x and subtract 8.9 from 26 s 26 - 8.9 = 17.1. Next, you will subtract -4.5 from 17.1 which equals 12.6. So 26 is your answer.

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3. You know that that 1 liter of helium can lift 1 gram and that Ryan weighs 5 stone and 5 pounds. So you must make the following conversions:

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4. Then Ryan's weigh is:

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5. Then, if 1 liter of helium can lift 0.0022 lb, to lift 75 lb (which is the weight of Ryan) they need:

$\frac{75lb*1L}{0.0022lb}=34,090.90L$

6. Then, to calculate the aproximated number of balloons they need to make him float (which can call $n$ ), you must divide the liters of helium needed to lift the weight of Ryan by the volume of a balloon, then the result is: