All categories

3 years ago

Simplify each expression by combining like terms. 7a - 6 + 8a

Mathematics

1 answer:

anygoal [31]3 years ago

5 0

=7a - 6 + 8

=7a + 8a - 6 =15a - 6

You might be interested in

If a = -3, find the value of a) 2a b) a^2 c) 3a^2

White raven [17]

Answer:

a) -6

b) 9

c) 27

Step-by-step explanation:

$2( - 3) = - 6 \\ { - 3}^{2} = - 9 \\ 3 {( - 3)}^{2} = 27$

8 0

2 years ago

Read 2 more answers

executive committee consists of 15 members: 7 men and 8 women. 5 members are selected at random to attend a meeting in Hawaii.

larisa [96]

Answer:

1over3

Step-by-step explanation:

number of successful outs come over the total number 5over 15

7 0

3 years ago

What is 5 cm in mm. i need a simple answer. NO LINKS

Setler [38]

50 millimeters

keystrokes

4 0

3 years ago

Read 2 more answers

Please help me it is due in 10 minutes

MAXImum [283]

Answer:

whooops no one had answered u from 50 min!

3 0

2 years ago

Find x so that x, X +2, X'+3 are the first three terms of a geometric sequence. Then find the 5" term of the

velikii [3]

Answer:

The fifth term is -1/4.

Step-by-step explanation:

We know that the first three terms of the geometric sequence is x, x + 2, and x + 3.

So, our first term is x.

Then our second term will be our first term multiplied by the common ratio r. So:

$x+2=xr$

And our third term will be our first term multiplied by the common ratio r twice. Therefore:

$x+3=xr^2$

Solve for x. From the second term, we can divide both sides by x:

$\displaystyle r=\frac{x+2}{x}$

Substitute this into the third equation:

$\displaystyle x+3=x\Big(\frac{x+2}{x}\Big)^2$

Square:

$\displaystyle x+3 = x\Big( \frac{(x+2)^2}{x^2} \Big)$

Simplify:

$\displaystyle x+3=\frac{(x+2)^2}{x}$

We can multiply both sides by x:

$x(x+3)=(x+2)^2$

Expand:

$x^2+3x=x^2+4x+4$

Isolate the x:

$-x=4$

Hence, our first term is:

$x=-4$

Then our common ratio r is:

$\displaystyle r=\frac{(-4)+2}{-4}=\frac{-2}{-4}=\frac{1}{2}$

So, our first term is -4 and our common ratio is 1/2.

Then our sequence will be -4, -2, -1, -1/2, -1/4.

You can verify that the first three terms indeed follow the pattern of x, x + 2, and x + 3.

So, our fifth term is -1/4.

4 0

3 years ago

Simplify each expression by combining like terms. 7a - 6 + 8a ​

Simplify each expression by combining like terms. 7a - 6 + 8a