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2 years ago

Plz answer quickly!!!!!!!

Mathematics

1 answer:

ValentinkaMS [17]2 years ago

6 0

Answer:

(A). x ≥ $\frac{16}{5}$ and x ≤ - $\frac{3}{4}$

Step-by-step explanation:

5x - 4 ≥ 12 ⇔ 5x ≥ 16 ⇒ x ≥  $\frac{16}{5}$  

and

12x + 5 ≤ - 4 ⇔ 12x ≤ - 9 ⇔ 4x ≤ - 3 ⇒ x ≤ -  $\frac{3}{4}$

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For this case we must find the product of the following expression:

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We add similar terms:

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Finally, the expression is as:

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Answeer:

$-2a ^ 3 + 9a ^ 2 + 6ab ^ 2 + 45a + 18b ^ 2$

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2 years ago

Without actually writing the formula, explain how to expand (x + 3)7 using the binomial theorem.

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1 year ago

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shepuryov [24]

Correct question:

Which reaction describes a beta emission? 2659Fe→ 2759Co + −10e, 88226Ra→ 86222Rn + 24He, 94239Pu + 24He→ 96242Cm + 01n, 54118Xe→ 53118I + +10e

Answer:

2659Fe→ 2759Co + 1e

Step-by-step explanation:

General equation for beta decay is given as;

$^A_zX -> \ ^A_{z+1}Y +\ ^0_{-1} \beta$

where;

A is the atomic mass of the element

z is atomic number of the element

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