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Anton [14]
4 years ago
11

What is the difference written in scientific notation? 0.00067 - 2.3 x 10^5

Mathematics
1 answer:
shepuryov [24]4 years ago
5 0
0.00067=67X10^5 so

67X10^5-2.3X10^5

64.7X10^5 which can be expressed as:

6.47X10^6

(not sure if it matters to you or not, but technically we only had two significant figures so it should be rounded to 6.5X10^6)


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I really need help with this question
Angelina_Jolie [31]
Its 34
Because it shoukd equal 180 so when you do 101+45= 146 then you subtract 180-146= 34
6 0
3 years ago
The answer for number 17
Sedbober [7]
Since cube has all faces as Squares

perimeter of each face P = 22.2
as we know perimeter of a square is P = 4 * ( Sides of a square )

let the sides of the square be 'x'

Hence , 22.2 = 4 * x

=> x = 22.2/4
=> x = 5.55

hence the edge's length is 5.55

Note : if the length from edge to edge is asked then

Length of the Diagonal for a cube =
\sqrt{3}  \times x
Hence we get edge to edge length as

√3 * 5.55 = 9.612

4 0
4 years ago
Which equation represents a direct variation?<br> y = 2х<br> y=x+4<br> y= 1/2x<br> y=3/x
gayaneshka [121]

Answer:option 1 and option 2 represents a direct variation.

Step-by-step explanation:

A direct variation is one in which, as one variable increases in value, the other variable increases in value. Also as one variable decreases in value, the other variable decreases in value.

Looking at the options,

1) y = 2х

When x = 2, y = 2×2 = 4

When x = 3, y = 2×3 = 6

Therefore, y = 2x is a direct variation.

2) y=x+4

When x = 2, y = 2 + 4 = 6

When x = 3, y = 3 + 4 = 7

Therefore, y = x + 4 is a direct variation.

3) y= 1/2x

When x = 2, y = 1/2×2 = 1/4 = 0.25

When x = 3, y = 1/2×3 = 1/6 = 0.17

Therefore, y = 1/2x is not a direct variation.

4) y = 3/x

When x = 2, y = 3/2 = 1.5

When x = 3, y = 3/3 = 1

Therefore, y = 3/x is not a direct variation.

6 0
3 years ago
Can someone pls solve these for me i’ll give brainlist
Sedbober [7]

Answer

3. 14

4. 4

5. 8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
2= 7/9 x 6 + b solve for b
netineya [11]

Answer:

8/3

Step-by-step explanation:

7/9 x 6

14/3

14/3 - 2

8/3

5 0
3 years ago
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