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aniked [119]
3 years ago
15

Element X is a radioactive isotope such that every 40 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 110 grams, how much of the element would remain after 29 years, to the nearest whole number?
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
3 0

Answer:67 or 66.549674907

Step-by-step explanation:

Man women baby

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Find the value of y in the given triangle
Andre45 [30]

Given:

In the given triangle,

With respect to y, Perpendicular = 10 cm and Base = 8 cm

To find the value of y.

Formula

By Trigonometric Ratio we get,

tan\theta = \frac{Perpendicular}{Base}

Now,

Putting the values of perpendicular and base we get,

tan\theta = \frac{10}{8}

or, \theta = tan^{-1} (\frac{10}{8})

or, \theta = 51.34 ^\circ

Rounding off to the nearest tenth, we have;

\theta = 51.3 ^\circ

Hence,

The value of y is 51.3°.

7 0
3 years ago
What is the difference of the two expressions shown below?<br> (3/4x + 2) - (1/4x + 5)
faltersainse [42]

Answer:

-4. (e) (2-7)(5–3)+32. (-5)(2) +9. -10+9. -8710. 913 - 12 - 13. Ex: Evaluate 4x-7 when x=5. 4(5)-7 ... Ex: In the following exercise we show how two linear expressions are ... equivalency of the two expressions you determined to be equivalent above? ... Ex: Determine an expression that is equivalent to 10x+15? lox+1. 5(2X+3).

Step-by-step explanation:

Here is my notes hope it helped

5 0
3 years ago
Daniel is making a cube using blocks. The cube is solid and has no holes.
cestrela7 [59]
Its d 729 because on 1 layer theres are 81 cubes and there are 9 layers so 81 times 9 equals 729

Hope this helps
4 0
3 years ago
Read 2 more answers
Which statement is true about every rectangular pyramid?
Ratling [72]

Answer:

At least two of the lateral faces are congruent.

Step-by-step explanation:

Because the words "at least" are used this means that at a minimum 2 of the faces are congruent. Because the base is in the shape of a triangle, this will definitely be true.

hope this helps:)

3 0
3 years ago
Read 2 more answers
How do I solve f+4/g=6 for f showing my work
V125BC [204]

We have two solutions for this problem based on the given equation.


<u><em>Answer #1:</em></u>

<u>If the given equation was:</u>

f + \frac{4}{g} = 6


To solve for f, we would need to isolate the "f" on one side of the equation.

In case of the above equation, we can simply do that by subtracting \frac{4}{g} from both sides of the equation

<u>This would give:</u>

f + \frac{4}{g} - \frac{4}{g} = 6 - \frac{4}{g}

f = 6 - \frac{4}{g}


<u><em>Answer #2:</em></u>

<u>If the given equation was:</u>

\frac{f+4}{g} = 6


To solve for f, we would still need to isolate the "f" on one side of the equation.

<u>This can be done as follows:</u>

\frac{f+4}{g} = 6 ................> multiply both sides by (g)

f + 4 = 6g ................> subtract 4 from both sides of the equation

f + 4 - 4 = 6g - 4

f = 6g - 4


Hope this helps :)

6 0
3 years ago
Read 2 more answers
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