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2 years ago

5. HELP ASAP!!! GIVING BRAINLIEST!!! Find each missing measure.

Mathematics

2 answers:

garri49 [273]2 years ago

5 0

X = 6
because the the whole triangle equals 180 degrees
so you have to add all the equations and equal it to 180

Sladkaya [172]2 years ago

4 0

Answer:

x = 6

<u><em>Sorry if this answer is not correct, if it is or is not, please tell me in the comments!</em></u>

Step-by-step explanation:

All of the angles add up to 180 degrees (since it is a triangle), so

(11x - 3) + (7x + 5) + (13x - 8) = 180

Then, combine the like terms.

31x - 6 = 180

Now, out goal is to separate the x from everything. To do that, we need to add 6 to 180.

31x = 186

Then divide by 31.

x = 6

(Feel free to replace x with 6 back in the previous equation to double check it!)

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garri49 [273]

Average speed the others are categorical.

7 0

2 years ago

A 41 gram sample of a substance that's used to detect explosives has a k-value of 0.1392. Find the substance's half life, in day

-BARSIC- [3]

Answer:

The substance half-life is of 4.98 days.

Step-by-step explanation:

Equation for an amount of a decaying substance:

The equation for the amount of a substance that decay exponentially has the following format:

$A(t) = A(0)e^{-kt}$

In which k is the decay rate, as a decimal.

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This means that:

$A(t) = A(0)e^{-0.1392t}$

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This is t for which $A(t) = 0.5A(0)$ . So

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$0.5A(0) = A(0)e^{-0.1392t}$

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$\ln{e^{-0.1392t}} = \ln{0.5}$

$-0.1392t = \ln{0.5}$

$t = -\frac{\ln{0.5}}{0.1392}$

$t = 4.98$

The substance half-life is of 4.98 days.

5 0

2 years ago

Work out the area of the shaded shape.

Step2247 [10]

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Step-by-step explanation:

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3 years ago

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KATRIN_1 [288]

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3 years ago