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Debora [2.8K]
4 years ago
9

An element with mass 210 grams decays by 8.3% per minute. How much of the element is remaining after 15 minutes, to the nearest

10th of a gram?
Mathematics
1 answer:
alexandr1967 [171]4 years ago
0 0

Answer:

57.2 g

Step-by-step explanation:

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A pentagon is formed by connecting the tips of a starfish's leds, as shown below
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The area is 161

Step-by-step explanation:

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See the picture below!!
Darya [45]

Answer:

Q1) x = 17.3

y = 8.7

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Step-by-step explanation:

Question 1

Angle = 60°

Hypotenuse = x

Adjacent = y

Opposite = 15

<u>Step 1: Find x</u>

Sin (angle) = opposite/hypotenuse

Sin (60°) = 15/x

x = 10√3 = 17.3

<u>Step 2: Find y</u>

Tan (angle) = opposite/adjacent

Tan (60°) = 15/y

y = 5√3 = 8.7

Question 2

<u>Step 1: Find the diagonal of the base</u>

c² = a²+b²

c² = 6² + 10²

c = 2√34 = 11.7

<u>Step 2: Find diagonal d</u>

c² = a² + b²

d² = 11.7² + 15²

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3 years ago
Find the missing angles. will give brainliest if done correctly.
NISA [10]

Answer:

<h2><u><em>x = 69°</em></u></h2><h2><u><em>V = 103°</em></u></h2>

Step-by-step explanation:

the sum of the interior angles in a triangles is 180°, take away from 180 the know angles (34° and 77°) and you will have your answer

180 - 34 - 77 = 69°

Now we find angle V

The angle V and the angle of 77 ° are on a straight line, so the sum is 180°, from 180° you subtract 77 ° and you have the value of V

180 - 77 = 103 °

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2 years ago
Read 2 more answers
-8(7 + x) = 137<br> What can be used to solve this problem
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Answer:

-24.5

Step-by-step explanation:

-56+-8x=137

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x=-24.5

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.....................
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