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Novay_Z [31]
3 years ago
9

I need help choosing which two equations tool el to find the individual massses of A and B

Mathematics
1 answer:
sineoko [7]3 years ago
3 0

Answer:

Step-by-step explanation:

The third one :

  • a is twice the mass of b so a=2b
  • b and 2a combined equal 45

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What is the value of x in the equation 1,331x3 − 216 = 0?
erma4kov [3.2K]
1331 x³ = 216
x³ = 216/1331
x = \sqrt[3]{ \frac{216}{1331} } =  \frac{6}{11}
Thank you.
4 0
3 years ago
What is the inverse (opposite) of addition?
madam [21]

Answer:

Subtraction is the inverse (opposite operation) of addition

Step-by-step explanation:

4 0
3 years ago
Use the theoretical probability formula to solve the problem. Express the probability as a fraction
serg [7]

Answer:

c. 3 / 13

d. 2 / 13

Step-by-step explanation:

c.

A deck of cards has 52 cards. There are cards of 4 suits- Spades, Hearts, Diamonds and Clubs.

So, there are 52/4= 13 cards of each suit.

Among these 13 cards, there are 3 picture cards or face cards as they are called. These are the Jack, Queen and King cards.

So, the number of total picture cards = 4*3 = 12

the number of cards are 52

theoretical probability formula: P =  favorable events/  possible events

P = 12 / 52

P = 3 / 13

d.

there are four aces and four sevens in the deck

so favorable events = 4 + 4 = 8

possible eventas = 52

P = 8 / 52

P = 2 / 13

4 0
3 years ago
Can someone please help
Ira Lisetskai [31]
E = 1/2(1.59 × 10^3)([2.7 × 10^1]^2)
plug it in to the o'l calculator and ¡bam!
4 0
3 years ago
PLEASE HELP! I'LL GIVE BRAINLIEST!!!!!!!
daser333 [38]

Answer:

1.6x10^-18 gram

Step-by-step explanation:

(5.3 x 10⁻²³ gram/molecule) x (20,000 molecule)

= (5.3 x 10⁻²³ x 2 x 10⁴) gram

= (10.6 x 10⁻²³⁺⁴) gram

= (1.06 x 10⁻²³⁺⁵) gram

= 1.06 x 10⁻¹⁸ gram

We need to find the mass of 20,000 molecules of oxygen. It can be calculated using unitary method. Here, we can multiply 20,000 molecules  by the mass of one oxygen molecule.

7 0
3 years ago
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