2 years ago

Write an expression that is equivalent to (4x + 9)

Mathematics

2 answers:

notka56 [123]2 years ago

6 0

The final answer would be 4x+9.

zalisa [80]2 years ago

4 0

As this is already in its simplest form, I believe the only other expression is 4*X +9

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rusak2 [61]

Answer:

2/6

Step-by-step explanation:

the circle is devided into 3 pieces and one piece is taken , so if u multiply 1/3 by 2 it equals to 2/6

6 0

2 years ago

Which of the following equations is equivalent to -2(2 − 2x) = 4 − 8(1 − x) ?

Strike441 [17]

Answer:

0 = 4x

Step-by-step explanation:

-2(2 - 2x) = 4 - 8(1 - x)

-4 + 4x = 4 - 8 + 8x

-4 + 4x = -4 + 8x

-4 + 4 = 8x - 4x

0 = 4x

8 0

2 years ago

Read 2 more answers

Determine the sum of the first 9 terms in the geometric series where r= -0.25 and a1= 256.

Damm [24]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ r=-0.25\\ a_1=256\\ n=9 \end{cases}$

$\bf S_9=256\left(\cfrac{1-(-0.25)^9}{1-(-0.25)} \right)\implies S_9=256\left( \cfrac{1+0.25^9}{1+0.25} \right) \\\\\\ S_9=256\left( \cfrac{52429}{65536}\right)\implies S_9=\cfrac{52429}{256}\implies S_9=204.80078125$