All categories

3 years ago

3(4a+7)=5(2a+4)+1 What is it?

Mathematics

1 answer:

hichkok12 [17]3 years ago

7 0

Answer:

a = 0

Step-by-step explanation:

3(4a+7)=5(2a+4)+1 Distribute 3 through the parentheses

- > 12a + 21 = 5(2a + 4) +1

5(2a + 4) +1 --> 10a + 20 + 1

12a + 21 = 10a + 20 + 1 --> 12a + 21 = 10a + 21 --> 12a = 10a

12a - 10a = 0 --> 2a = 0

Divide both sides of the equation by 2 --> a = 0

You might be interested in

What is the first term in a geometric sequence if the common ratio is − 2 and the sum of the first six terms is −105?

Serggg [28]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
r=-2\\
n=6\\
S_6=-105
\end{cases}$

$\bf -105=a_1\left( \cfrac{1-(-2)^6}{1-(-2)} \right)\implies -105=a_1\left( \cfrac{1-(64)}{1+2} \right)
\\\\\\
-105=a_1\left( \cfrac{-63}{3} \right)\implies -105=a_1(-21)
\\\\\\
\cfrac{-105}{-21}=a_1\implies 5=a_1$

7 0

3 years ago

Multiply: (4x^2+4x+1)by(2x^2+x-2)<br><br>no spam step by step explanation

klemol [59]

Answer:

the answer is 34

Step-by-step explanation:

first we put the equation together (4x^2+4x+1)by(2x^2+x-2)

so we multiply the formula together so we (4x^2+4x+1) (2x^2+-2) and that's how you get 34

8 0

3 years ago

If 40x = 400, then A. x equals 100. B. x equals 10. C. I equals 4. O D. x equals 1. E. requals 0 ).

Brut [27]

Answer:

B- x= 10

Step-by-step explanation:

40x=400 -> 40 x 10= 400

8 0

3 years ago

8−i

GalinKa [24]

Hi Veracity,

Answer:

(2 + i) = 2

Step-by-step explanation:

Multiply the denominator and numerator by the conjugate,

= $\frac{(8 - i)(3 + 2i)}{13}$

Combine Like Terms,

= $\frac{26 + 13i}{13}$

Simplify,

= 2 + i

Hope This Helps :)

3 0

3 years ago

4 more than y into a algebraic expression

Anton [14]

Answer:

y+4

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers