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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
The altitude of a triangle is 5 less than its base. The area of the triangle is 42 square inches. Find its base and altitude.​
zavuch27 [327]

9514 1404 393

Answer:

  base: 12 in

  altitude: 7 in

Step-by-step explanation:

The formula for the area of a triangle is ...

  A = 1/2bh

Filling in the given information, we have ...

  42 = 1/2(b)(b -5)

  b^2 -5b -84 = 0 . . . . multiply by 2, put in standard form

  (b -12)(b +7) = 0 . . . . factor

The only positive solution is b = 12

The base is 12 inches; the altitude is 7 inches.

8 0
2 years ago
The area of a triangular banner is 64 square feet. The base of the banner is 16 feet long. Write an equation you can use to find
zaharov [31]
The equation would be h=(2A)/b
7 0
3 years ago
What are two integers whose product is a negative.
marissa [1.9K]
-25×2=-50
Negative and positive numbers are integers, like shown above. Their product is negstive.
4 0
3 years ago
There are 7 roses in a vase of 16 flowers. The rest are daisies.
Greeley [361]

Answer:

(a) 7:9 or 7 to 9 or \frac{7}{9}

(b) 9:16 or 9 to 16 or \frac{9}{16}

Step-by-step explanation:

The first thing you need to figure out is how many daisies are in the vase. There are 9. So the answer to question a is 7 roses to 9 daisies. The answer to question b is 9 daisies to 26 total flowers in the vase.

I wrote #:# or # to # or \frac{#}{#}#/# because these are all of the ways you can write a ration. I wasn't sure which one you needed.

Hope it helps! :)

8 0
3 years ago
Math help pls i don’t understand how to solve this
pochemuha
<h3>Answer:    y = x+1</h3>

===================================================

Explanation:

f(x) = x^3 - 2x + 3

f ' (x) = 3x^2 - 2 ..... apply the power rule

f ' (1) = 3(1)^2 - 2 ... plug in x coordinate of given point

f ' (1) = 1

If x = 1 is plugged into the derivative function, then we get the output 1. This means the slope of the tangent line at (1,2) is m = 1. It's just a coincidence that the x input value is the same as the slope m value.

Now apply point slope form to find the equation of the tangent line

y - y1 = m(x - x1)

y - 2 = 1(x - 1)

y - 2 = x - 1

y = x - 1 + 2

y = x + 1   is the equation of the tangent line.

The graph is shown below. I used GeoGebra to make the graph.

4 0
3 years ago
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