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3 years ago

Please help help help help help me

Mathematics

1 answer:

NeTakaya3 years ago

4 0

Answer:

Less than or equal to a positive number. (and a whole number)

Step-by-step explanation:

We know that the capacity is 310. That means there can be no more than 310 people in a room. There cannot be a negative number of people in a room.

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Fine the probability. NEED THE STEPS IF POSSIBLE.

Mekhanik [1.2K]

Answer:

The probability of getting an even number on a number cube is 1/2

The probability of getting the heads on a dime is 1/2

Step-by-step explanation:

A number cube has six numbers

And three of those numbers are even numbers.

Therefore;

Probability = 3/6

= 1/2

A dime has two faces, heads and tails

One of them is heads

Therefore;

Probability = 1/2

5 0

3 years ago

The pH of solution A is 2.4, while the pH of solution B is 9.4.

raketka [301]

Answer:

Given:

The pH of solution A = 2.4

The pH of solution B = 9.4.

Solution:

The hydrogen ion concentration is the amount of hydrogen ions present in the given solution usually expressed in terms of moles pere litre .

(A) hydrogen-ion concentrations of the solution.

$H^+= 10^{-pH}$

Now,

The hydrogen ion concentration of the solution A

$H^+= 10^{-2.4}$

$H^+= 3.981\times 10^{-3}$

Similarly

hydrogen ion concentration of the solution B

$H^+= 10^{-9.4}$

$H^+= 3.981\times 10^{-10}$

(b) The hydrogen ion concentration of solution A $3.981\times 10^{-3}$ is and the solution B is $3.981\times 10^{-10}$

so we can conclude that the hydrogen ion concentration of solution A is $10^ 7$ times greater than solution B

(c) The solutions A and Solution B differ by 7 order of magnitude

3 0

3 years ago

Solve the following system of equations by substitution. *<br> 8x + 5y = 24<br> y = -4x

icang [17]

Answer:

x= 19/4

Step-by-step explanation:

6 0

3 years ago

Square root of (20 - r) = r

Marrrta [24]

R=4 because 20-4 = 16 and 4 times 4 = 16

6 0

4 years ago

The quotient of 10 and x

Naddik [55]

Answer:

it would be either 10/x or x/10 depending on the order

6 0

3 years ago