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liq [111]
2 years ago
13

Help please i need it thanks.

Mathematics
1 answer:
Shalnov [3]2 years ago
8 0

Answer:

x is less than or equal to 7

Step-by-step explanation:

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A radioactive substance decays according to the formula A=A0e^kt
Sholpan [36]
Without needing fancy formulas, we can conclude that after 10 years, half of the substance will be left.  So, we can make our own formula:
amount remaining = 1 / 2^(years/10)
So, after 5 years
amount remaining = 1 / 2^(5/10)
amount remaining = 1 / 2^(.5)
amount remaining = 1 / <span> <span> <span> 1.414213562 </span>
</span></span><span>amount remaining = 0.70711 * 20 grams
</span><span><span><span><span>amount remaining = </span>14.1421356237 grams

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4 0
2 years ago
Almost done with my hw but stuck on this one please help ​
Mashutka [201]

Answer:

<h2>z = 27°</h2>

Because that angle is 30°.

it's nearest value is 27.

6 0
2 years ago
HigherOrder thing name two rays with the same endpoint in the figure below. Do they form an angle? Explain.
Artist 52 [7]

Answer:

where is the figure?

Step-by-step explanation:

4 0
3 years ago
What ratio is equivalent to 4:5 A. 10/15 B. 4/10 C. 16/20 D. 15/8
laila [671]

The answer is C 16:20 because both numbers 4&5 are multiplied by four

8 0
3 years ago
Read 2 more answers
you plant 15 tulip bulbs and 10 of them grow into flowers to bloom. If you plant 21 more re tulips bulbs, predict how many of th
harina [27]

Answer:

14 more flower would bloom if 21 more tulip bulb is planted.

Step-by-step explanation:

Given ratio for tulip bulbs and flowers is 15:10.

Now, finding number of flower to bloom if 21 tulip bulb are planted.

Assume if 21 tulip bulbs are planted then number of flower would bloom be"x"

ratio given: \frac{Tulip\ bulbs}{ Flower} = \frac{15}{10} = \frac{21}{x}

Cross multiplying the ratio to get:

⇒x= \frac{21\times 10}{15} = \frac{210}{15}

∴x= 14\ flowers

Hence, 14 flowers would bloom if 21 tulip bulb are planted.

If total tulip bulb is 15+21= 36, then 10+14= 24\ flowers would bloom.

5 0
2 years ago
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