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Snezhnost [94]
3 years ago
15

The diameter of a small grain of sand is about 0.00002 meters, which can be written as 2•10^n

Mathematics
2 answers:
defon3 years ago
6 0

Answer:

N = -5

Step-by-step explanation:

Move the decimal point right until it is right after the first significant figure.

N = 5

But wait! It's a decimal so it has to be negative.

N = -5

Anastaziya [24]3 years ago
4 0

Answer:

N=-5

Step-by-step explanation:

I just wanted the points lol

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The figure shows two similar triangles on a coordinate grid: A coordinate grid is shown from positive 6 to negative 6 on the x-a
SIZIF [17.4K]

From what I know, figure ABC has gotten smaller so you wouldn't use either options that suggests a dilation of 3, because that would mean it got bigger. (But please correct me if I'm wrong.) Also, if you look at the little unit square measurements on the graph, looking at figure ABC, C is 6 units from B, while in figure A'B'C', C' is 2 units from B', which 6÷2=3 meaning that A'B'C' would most likely be a third of its size.

Next the figure is being mirrored over the y-axis which is the vertical line going up and down.

So the answer would be the option that says

"Dilation by a scale factor of 1 over 3 followed by a reflection about the y-axis"

I hope that it's right, because I haven't practiced this in a while, and I hope this made some sense.

5 0
3 years ago
Richard and teo have a combined age of 42. Richard is 9 years older that twice teos age. How old are Richard and Teo
satela [25.4K]

Step-by-step explanation:

Richard and teo age is 51 years old

6 0
2 years ago
Zack, Jack and Sasha earned £250 altogether delivering leaflets.
AleksAgata [21]

Answer:

Zack earned £125, Jack earned £75, and Sasha earned £50

Step-by-step explanation:

Considering the number of leaflets delivered

Zack 50%, Jack 30% and Sasha 20%

Total delivered = 50 + 30 + 20 = 100%

If they earn £250 on the 100% delivery, then each will have as shown below

Zack = (50/100)*250

= 5*25

= £125

Jack = (30/100)*250

= 3*25

= £75

Sasha = (20/100)*250

=2*25

= £50

5 0
3 years ago
Read 2 more answers
What is 1 8/9 written as a improperfraction
Yakvenalex [24]
To write this as an improper fraction you would multiply 9 by 1 then add your product to the numerator.
9x1=9
9+8=17
17/9
Hoped this helped!
4 0
3 years ago
6. (08.02 MC)
MariettaO [177]

Answer:

The percentage change in volume between cylinder A and cylinder B is 50%

Step-by-step explanation:

The volume of a cylinder is given by the formula

V= πr^2h

For cylinder A, where r=7 and h= 5, π=22/7

V= π * 7^2 * 5

V= π * 49 * 5

V= 769.69 cubic inch

For cylinder B

V= 490π

V= 1539.3804 cubic inch

The percentage change in volume between cylinder A and cylinder B

=[ (VA- VB)/VB] *100

=( 1539.3804 - 769.69) / 1539.3804

= 0.5000 * 100

= 50%

8 0
3 years ago
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