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galben [10]
3 years ago
15

What percent of our world is made of Hydrogen and Helium?

Mathematics
1 answer:
Romashka [77]3 years ago
6 0
Hydrogen is around 0.000053% and Helium is around <span>0.000524%</span>
You might be interested in
Evaluate tan(sin^-1(-4/5)). Enter your answer as a fraction using the slash bar (/).
Anvisha [2.4K]

Answer:

-1333/1000

Step-by-step explanation:

Evaluate tan(sin^-1(-4/5)).

First we need to evaluate the expression in parenthesis

sin^-1(-4/5)

= sin^-1(-0.8)

= -53.13

SUbstitute the given value into the original expression as shown;

tan(sin^-1(-4/5))

=  tan(-53.13)

= -1.333

= -1333/1000

Hence the required answer is  -1333/1000

8 0
2 years ago
Read 2 more answers
Approximate the value of 5 π
olya-2409 [2.1K]

Answer with explanation:

→π is an Irrational Number.

→Decimal Representation of π is non terminating non repeating.

\pi=\frac{\text{Circumference of Circle}}{\text{Diameter}}\\\\\pi =3.14\\\\ 5\pi =5 \times 3.14=15.70

⇒5 π =15.70

8 0
3 years ago
Read 2 more answers
If a work group consistently achieves 80 % of its quarterly goals and the work group generally has 25 objectives per quarter how
storchak [24]
What this question is asking you to find 80% of 25. 10% of 25 is 2.5 because there is always a decimal point directly to the right of the ones place. (25.0)
You would move the decimal point over one place to find 10% of a given number. How I would approach this is to multiply 2.5 by 8 to find 80% of 25

2.5 x 8 = 20

80% of 25 = 20

You can expect the work group to get done 20 out of 25 of their objectives per quarter











6 0
3 years ago
The perimeter of a rectangular cattle feeding area is 100 meters. The
Gre4nikov [31]
The dimensions are 15x35 meters
8 0
3 years ago
4x+(7-3)5=10 please help with this one
Ostrovityanka [42]

Answer:

x=-2.5

Step-by-step explanation:

4x+(7-3)5=10

4x+(4)5=10

4x+20=10

subtract 20 from each side

4x=-10

divide each side by 4

x=-2.5

3 0
3 years ago
Read 2 more answers
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