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2 years ago

Question 1 (Multiple Choice Worth 1 points)

Mathematics

1 answer:

Bumek [7]2 years ago

4 0

Answer:

The third option: 3(x-4)

Step-by-step explanation:

In this case factoring means we want our x variable to be on its own and not have a coefficient, so:

3x-12

= 3·x + 3·4

= 3(x+4)

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Convert 1.5 kg to g.

KiRa [710]

The answer is 1500g. There are 1000 grams in a kilogram so 1.5 x 1000 = 1500.

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3 years ago

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What is a fraction is equivalent to 8/3 that its denominator is 9

Sidana [21]

Answer:

24/9

Step-by-step explanation:

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3 years ago

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HI decomposes into its elements according to second-order kinetics. What concentration of HI remains from an initial concentrati

Novosadov [1.4K]

Answer:

Therefore (2.30-0.03747)= 2.2625 M of HI remains from an initial concentration of 2.30 M after 4.5 hours.

Step-by-step explanation:

second order reaction: The rate of reaction proportional to the square of the concentration of reactant.

For second order reaction

$k=\frac{x}{ta(a-x)}$

K is rate constant = 1.6×10⁻³M⁻¹hr⁻¹

a = initial concentration of reactant = 2.30 M

a-x = concentration of reactant after t h

t = time = 4.5 h

Putting the values in the above equation,

$1.6\times 10^{-3}= \frac{x}{4.5 \times 2.30 \times (2.30-x)}$

$\Rightarrow 16.56 \times 10^{-3}\times (2.30-x)= x$

$\Rightarrow 16.56 \times 10^{-3}\times 2.30-16.56 \times 10^{-3}\times x= x$

$\Rightarrow (1+16.56 \times 10^{-3}) x=16.56 \times 10^{-3}\times 2.30$

$\Rightarrow x = 0.03747$

Therefore (2.30-0.03747)= 2.2625 M of HI remains from an initial concentration of 2.30 M after 4.5 hours.

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4 years ago

Can anyone help me please? i have 14 more minutes to finish this can anyone help?

valentinak56 [21]

Answer:

Step-by-step explanation:

A is 3-2 which is 1, not 5.

C is 3(2), which is 6, not 5.

D is 6, which is not 5.

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3 years ago

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The statue of liberty is 305.5 feet tall from the foundation of it pedestal to the top of its torch Isla is building a model of

Effectus [21]

Answer: The actual model is 3.055 feet tall.

Step-by-step explanation:

Given: The statue of liberty is 305.5 feet tall from the foundation of it pedestal to the top of its torch .

The height of the model of the statue = $\dfrac{1}{100}\times\text{ (Height of actual model)}$

$=\dfrac{1}{100}\times305.5\\\\=3.055\text{ feet}$

Hence, the actual model is 3.055 feet tall.

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3 years ago