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givi [52]
3 years ago
6

Perform the following calculation. Express your answer in scientific notation. (2×105) + (6×105) Write your answer in scientific

notation using the format: 4.2x10^5 with no spaces
Mathematics
2 answers:
ZanzabumX [31]3 years ago
7 0
Answer:

8.4x10^1
Thanks
nirvana33 [79]3 years ago
6 0
8.4x10^1 I think that should be the answer
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mestny [16]

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swag

Step-by-step explanation:

8 0
3 years ago
Find the size of angle XZY<br> Answer given to one decimal place
barxatty [35]

Answer:

159cm

Step-by-step explanation:

Sum of all sides of triangles is 180

so, 15+6=21

then 180-21=159

4 0
2 years ago
How many 4-digit numbers are neither multiples of 2 nor multiples of 5?
Gwar [14]

There are 10,000 total four-digit numbers (1000 through 9999).

Multiples of 2 end in 0, 2, 4, 6, and 8. There are 9*10*10*5 = 4500 four-digit multiples of 2.

Multiples of 5 end in 0 or 5. There are 9*10*10*2 = 1800 four-digit multiples of 5.

There is redundancy between the two sets of numbers, namely those that end in 0, which are both multiples of 2 and 5. There are 9*10*10*1 = 900 four-digit multiples of both 2 and 5.

Then there are 4500 + 1800 - 900 = 5400 total four-digit numbers that are either multiples of 2 or 5, which means the remaining 4600 numbers are neither multiples of 2 nor 5.

4 0
3 years ago
Z^2 + 2z + 5 , when z = 2 , z^2 is "z squared
OverLord2011 [107]

Answer:

=13

Step-by-step explanation:

=2^2+2×2+5

=4+4+5

=8+5

=13

3 0
2 years ago
4. What is the formula for distance?
hichkok12 [17]

Answer:

b) d=rt

Step-by-step explanation:

5 0
2 years ago
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