In what periods are the lanthanides and actinides? Where are they

1 answer:

6 0

Lanthanides are in period 6 and actinides are in period 7. They are at the down part of the page so that the periodic table can fit on the page.

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Simplify (4x+2)3 please for my

Mademuasel [1]

Answer:

(4x + 2) x 3

4x + 2 x 3

4x + 6

4x/4 = X + 6/4 = 1.5

X = 1.5 I think

P.S. hope this helped if it is correct may I get Brainliest

3 0

3 years ago

A function, f(x), has degree of 9. If f(x) has 3 real zeros then how many complex zeros does it have?

Ivenika [448]

Answer:

if a function has degree 9

it will have 9 roots

given 3 are real this means rest (9-3 =6) are not real which means complex

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elena-14-01-66 [18.8K]

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4 years ago

Michelle places 15 potato plants in rows. All rows contain the same number of plants. how many plants could be in each row?

dedylja [7]

Answer:

225

Step-by-step explanation:

225 is the answer so each potato contain 15 so 15 x 15

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3 years ago

Read 2 more answers

Problem is in the pictures

marta [7]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}6x+3y=-21&\text{divide both sides by (-3)}\\2x+5y=5\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-2x-y=7\\2x+5y=5\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad4y=12\qquad\text{divide both sides by 4}\\.\qquad\qquad y=3\\\\\text{Put it to the second equation:}\\2x+5(3)=5\\2x+15=5\qquad\text{subtract 15 from both sides}\\2x=-10\qquad\text{divide both sides by 2}\\x=-5$

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3 years ago