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Artyom0805 [142]
3 years ago
10

Write the following value in scientific notation: 0.00000021

Mathematics
2 answers:
iren [92.7K]3 years ago
8 0
10 to the power of negative 6
Nina [5.8K]3 years ago
6 0
the last one is the answer..
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What is the slope of a line perpendicular to the line with a slope of 1/2
frosja888 [35]

Answer:

-2

Step-by-step explanation:

To answer this, just take the negative reciprocal of 1/2.  We obtain -2.

7 0
4 years ago
Find the surface area. round to the nearest hundredth when necessary.
Dmitry_Shevchenko [17]

Answer:

The surface area of the cuboid is 648 m^2

Step-by-step explanation:

What we have here is cuboidal in outlook

By using the formula for the surface area of a cuboid, we can get the surface area of the shape

mathematically, we have the surface area of a cuboid as follows;

2(lb + lh + bh)

where l is the length, b is the breadth (width) and h is the height

We can have the length as 9 m, the width as 9 m and the height as 13.5 m

Substituting these values, we have the surface area of the cuboid as;

A = 2(9(9) + 9(13.5) + 9(13.5))

A = 2(81 + 243)

A= 2(324)

A = 648 m^2

8 0
3 years ago
Determine the # of X intercepts from this equation F(x)=x^2+5x+4 ?
k0ka [10]
There are 2 x intercepts, x=-4 and x=-1
8 0
4 years ago
The sum of two numbers is 21. the second number is six times the first number.
Tamiku [17]

Answer:

Therefore first number is 3 and second number is 18

Step-by-step explanation:

Sum of the two numbers is 21 and Second number is six times the first number

x+6x = 21

 7x = 21

x = 21/7

x = 3

substitute x value in 6x to find second number,

 = 6x

 = 6*3

 = 18

8 0
3 years ago
Plz help me solve this. and any song requests
LuckyWell [14K]

Answer:

66

Step-by-step explanation:

12(8)-9(8-6)-(12-9)(8)÷2=96-18-12      or   6(9)+(12-9)(8)/2=54+12

                                     = 66                                              =66

3 0
3 years ago
Read 2 more answers
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