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Papessa [141]
3 years ago
10

The mass of a small virus is 10^-20 kg. The mass of an average human cell is 10^-12 kg. Which of the two has lesser mass? how ma

ny less is it?
Mathematics
2 answers:
fredd [130]3 years ago
5 0

For this case we have:

10 ^ {- 20}, we must run the decimal point 20 spaces to the left.

0.00000000000000000010 \ kg

10 ^ {- 12}, we must run the decimal point 12 spaces to the left.

0.000000000010 \ kg

Thus, it is observed that the mass of a small virus is smaller!

We subtract and obtain:

10 ^ {-11}

ANswer:

The mass of a small virus is less!

Bess [88]3 years ago
5 0

Answer: -10kg

Step-by-step explanation:

10-20 =-10

10-22 =-12

-10 is lesser

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What is the reading on each of the scales??
kipiarov [429]
First number is length on map and second is the length in reality. Both are in kilometers.
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3 years ago
Expand.<br> If necessary, combine like terms.<br> (x+3)(x – 3) = ?
Kobotan [32]

Step-by-step explanation:

multiply it

x²-3x+3x-9=0

x²-9=0

x²=9

square root both side we get

x=3

5 0
3 years ago
Read 2 more answers
A rectangle field has an area of 300 square meters and a perimeter of 80 meters. what are the length and width of the field?
Yakvenalex [24]
By definition the area of a rectangle is:
 A = w * l
 The perimeter is:
 P = 2w + 2l
 Where,
 w: width
 l: long
 Substituting values:
 300 = w * l
 80 = 2w + 2l
 Solving the system of equations we have:
 l = 30 m
 w = 10 m
 Answer:
 
The length and width of the field are:
 
l = 30 m
 
w = 10 m
6 0
3 years ago
Evaluate f(-3) for f(x) = 2^x<br> a. 1/8<br> b. -8<br> c. 8<br> d. -6
pickupchik [31]

Answer:

A

Step-by-step explanation:

f(-3) = 2^-3

to get rid of a negative in an exponent, move the whole thing to the denominator.

1/(2^3)

2^3 = 2×2×2

1/(2×2×2)

1/8

6 0
2 years ago
I need help! Will this would be very appreciated!pls
elena-s [515]

Answer:

No real

solution

Step-by-step explanation:

Firstly, let us check if we would be having a real solution

We start by rewriting the equation

We have this as;

8x^2 -25x + 24 = 0

We proceed to get the discriminant

Mathematically, we have this as;

D = b^2 - 4ac

b is the coefficient of x which is -25

a is the coefficient of x^2 which is 8

c is the last number which is 24

So we have;

D = (-25)^2 - 4(8)(24)

D = 625 - 768 = -143

Since the value of the discriminant is negative, there cannot be real roots

What we have as solution are complex roots

6 0
2 years ago
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