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2 years ago

What is not equivalent to 1/3 is it 5/15,7/21,6/24,or 9/27

Mathematics

1 answer:

Ne4ueva [31]2 years ago

6 0

Lets take a look.

1/3 x 5/5 = 5/15, so it is not A.

1/3 x 7/7 = 7/21, so it is not B.

1/3 x 9/9 = 9/27, so it is not D.

The answer must be C: 6/24, because 1/3 x 6 = 6/18, not 6/24. 1/3 x 8 = 8/24, not 6/24.

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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

Is 30 and 138 relatively prime

valkas [14]

Yes, If the two numbers have no factors in common then they are relatively prime.

3 0

2 years ago

Read 2 more answers

Please help me wit dis no one would help and i really need help

lukranit [14]

(4) 64 tiles, (5) $\mathrm{N}=\mathrm{s}^{2}$ , (6) $N^{2}=S^{4}$

Step-by-step explanation:

Given data: Side length of square tile = 1 ft

(4) Side length of square pool = 8 ft

$\text {Number of tiles} =\frac{\text { Area of square pool }}{\text { area of square tile }}$

$=\frac{8 \times 8}{1 \times 1}$

= 64

Hence 64 tiles needed for the border.

(5) Suppose number of square tiles be N and side of square tub is s ft.

So, N = $\frac{s \times s}{1 \times 1}$

$\Rightarrow N=s^{2}$

So, the expression is $\mathrm{N}=\mathrm{s}^{2}$ .

(6) The equivalent expression is $\mathrm{N}^{2}=\mathrm{S}^{4}$ .

5 0

2 years ago

FILL IN THE BLANKS: Given P(x) = 3x5 + 7x6 + 11x7 – 12x - 10

Mama L [17]

The polynomial $3x^5 + 7x^6 + 11x^7 - 12x - 10$ is in standard form if the exponents are arranged in decreasing order.

<h3>Polynomial in Standard Form</h3>

Polynomial is an algebraic expression with one or more terms. For example : $2x^3+6x^4+x^2+x+2$ . In this example and in your exercise the exponents of the terms are not arranged in order.

Um polynomial is in <u>Standard Form</u> when the exponents of the terms are in decreasing order. See more details below.

$2x^3+6x^4+x^2+x+2$ is not in standard form because the exponents are not written in decreasing order.

$6x^4+2x^3++x^2+x+2$ is in standard form because the exponents are written in decreasing order.

Therefore, the given polynomial will be in standard form if yours exponents are arranged in decreasing order.