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4 years ago

What is 0.00000000078 in scientific notation?

Mathematics

1 answer:

mixer [17]4 years ago

4 0

I think the answer would be 7.8 x 10^^10

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PLS HELP ASAP :DDDDDDDDDDDDDDDDDDD

gulaghasi [49]

Pythagoras in HBC : $HC=\sqrt{HB^2-BC^2}=\sqrt{20^2-12^2}=16in$

Pythagoras in HDC : $HD=\sqrt{HC^2-CD^2}=\sqrt{16^2-14^2}\approx\boxed{7.7 in}$

6 0

4 years ago

If the total value of the coins is 30¢, what is the missing coin?

IgorLugansk [536]

Answer:

$70

Step-by-step explanation:

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3 years ago

If the area of the right triangle is 72 what is the value of x

wel

36 i guess ha please that not right

8 0

3 years ago

A customer at a concession stand bought 2 boxes of popcorn & 3 drinks for $12. Another customer bought 3 boxes of popcorn &a

sergey [27]

Answer:

$10 each

Step-by-step explanation:

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3 years ago

X+y-5z=24,y+z=1,z=-4

aev [14]

Answer:

x=39, y = 5 and z = -4.

Step-by-step explanation:

x + y - 5z = 24

y + z = 1

z = -4

Plug z = -4 into the second equation:

y + -4 = 1

y = 5.

Now plug x = -4 and y = 5 into the first equation:

x + 5 - 5*4 = 24

x = 24 - 5 + 20

x = 39.

4 0

4 years ago