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alina1380 [7]
3 years ago
7

21 billion as how much more than 9.8 billion write it in scientific notation

Mathematics
2 answers:
Makovka662 [10]3 years ago
6 0

Answer:

life..........

bud

Step-by-step explanation:

Crazy boy [7]3 years ago
4 0
21 000 000 000-9 800 000 000=11 200 000 000= 1.12x10^10
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Can someone please help me extra points
Maslowich

Answer:

4) m: 1.25   b: 6         Equation: y= 1.25x + 6

5) m: 20      b: 10     Equation: y= 40x + 10

6) m: -2       b: 0       Equation: y= -2x + 0

7) m: 1/5      b: 1       Equation: y= 1/5x + 1

8) -8.7 = 1.3x + 0

I really hope this helps!

3 0
3 years ago
2x ​2 ​​ (9x ​2 ​​ −16)
xz_007 [3.2K]
Is the equation2x2(9x+2-16) if so you would do -16+2 first which is -14

Then multiply 2x2 equals 4

4(9x-14)

Multiply the 4 to 9x and -14

You get 36x-56
7 0
3 years ago
24 students and Jamal's class are wearing tennis shoes there are 30 students in this class your mom says that 70% of this class
mel-nik [20]
Im not sure if i am understanding the question correctly... 

If you are asking if Jama's mom is correct, then no. she is wrong. this is because 

if you take the proportion,  (is/of)=(%/100) you get (x/30)=(70/100). You then solve for x which in this case would be 21 students are wearing tennis shoes.

Hope this helps. 
3 0
3 years ago
The radius of one sphere is twice as great as the radius of a second sphere. Find the ratio of their volumes. 1/2 1/4 1/8 1/16
Anton [14]

Let's pick some simple points with which to set up an example for ourselves for this. Let's let the smaller radius be 1, and the larger, twice that, be 2. The radius itself is a single unit measure; in other words, it's measured as inches, feet, cm, etc., while the volume is a cubed measure. Volume is measured in inches cubed, feet cubed, cm cubed, etc. Therefore, if we have the radii measuring 1:2, we simply cube those single unit measures to find the ratio of their volumes. 1 cubed is 1, and 2 cubed is 8. So your answer for this is 1/8.

5 0
3 years ago
Read 2 more answers
Help! I’ll give BRAINLIEST!
iren [92.7K]

It’s letter C.

If you start at point (0,0) and go up two over one (rise over run) to the left, you’ll be at (-1,2). Go up two over one again to the left to get to (-2,4). Your equation would be: y=-2x+0 (0 because you started at 0 so your y-intercept is 0) though since it’s +0 you can leave that out and have y=-2x. It’s a negative slope because the line would be going down to the right.

4 0
3 years ago
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