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3 years ago

9

Help Please!

1 answer:

steposvetlana [31]3 years ago

8 0

Answer:

The answer to this question is x=2

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Evaluate x2 + 14 for x = –5.

algol13

Answer: A) JUST TOOK THE TEST

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How do you make predictions using experimental probability

ValentinkaMS [17]

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How you make predictions is by finding the ratio of the number of times an event occurs to the total number of trials.

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3 years ago

What are the two solutions of <br><br>2|2y-1| + 5 = 19

Bess [88]

Answer:

y=4

y=−3

Step-by-step explanation:

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Angle a and angle b are both supplementary angles. What must be true about the angles?

melamori03 [73]

Not sure if there're any answer choices of some sort,

but if the angle a and angle b are supplementary, that means when you add their measures together they must equal 180.

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3 years ago

A toxic radioactive substance with the density of 4 mg/cm² is detected in the been detected in the ventilating ducts that was us

Kruka [31]

The formula for half-life is:

$A = P(0.5)^{t/h}$

A is the amount remaining, P is the initial amount, t is the time that has passed, and h is the half-life of the substance. Plug in the values that you know and solve:

$4 = P(0.5)^{35/20} \\ \\ 4 = P(0.5)^{1.75} \\ \\ P = \frac{4}{0.5^{1.75}} \\ \\ P \approx 13.4543426441$

Rounded to the nearest whole number, the density of the substance was about 13<span>mg / cm².</span>

8 0

3 years ago