All categories

3 years ago

3(5a-b) - 2(3a-b) answer step by step

Mathematics

1 answer:

tiny-mole [99]3 years ago

4 0

Answer:

9a-b

Step-by-step explanation:

1) 3 (5a - b) - 2 (3a - b)

15a - 3b - 2 (3a - b)

2) 15a - 3b - 2 (3a - b)

15a - 3b - 6a + 2b

3) 15a - 3b - 6a + 2b

9a - 3b + 2b

4) 9a + 3b + 2b

9a - b

You might be interested in

Help me please!?!?!?!

eduard

The answer would be A

6 0

3 years ago

Solve x^2-8x-9=0 algebrically

SVETLANKA909090 [29]

Answer:

X = 9, -1

Step-by-step explanation:

1, Factor it

(x-9) (x+1) = 0

2. Both of a factor will = 0

x-9 = 0

x+1=0

3. Solve

x=9

x=1

7 0

4 years ago

A curious patterns occurs in a group of people who all shake hands with one another. It turns out that you can predict the numbe

ycow [4]

Missing part of the question

Determine the number of handshakes, i, that will occur for each number of people, n, in a particular room. (people)

Answer:

$S_n = \frac{n}{2}(n - 1)$

Step-by-step explanation:

Given

For 5 people

$\begin{array}{cc}{People} & {Handshakes} & {5} & {4} & {4} & {3} & {3} & {2} & {2} & {1} & {1} & {0} &{Total} & {10} \ \end{array}$

Using the given instance of 5 people, the number of handshakes can be represented as:

$(n - 1) + (n - 2) + (n - 3) + ........ + 3 + 2 + 1 + 0$

The above sequence is an arithmetic sequence and the total number of handshakes is the sum of n terms of the sequence.

$S_n = \frac{n}{2}{(T_1 + T_n})$

Where

$T_1 = n - 1$ --- The first term

$T_n = 0$ --- The last term

So:

$S_n = \frac{n}{2}(n - 1 + 0)$

$S_n = \frac{n}{2}(n - 1)$

7 0

3 years ago

Find the radius or diameter of each circle with the given dimensions. d=30 m

Alex_Xolod [135]

Answer:

r=94.2

Step-by-step explanation:

C=pi`d

C=3.14 multiplied by 30

C equals about 94.2

6 0

3 years ago

Which of the following is true for an isometry?

FrozenT [24]

Isometry is defined as the transformation that is invariant with respect to the distance
The statement that is true for isometry that is corrrect is
The preimage and the image are congruent.
so correct option is A as both the preimage and image are congruent
hope it helps

5 0

4 years ago

Read 2 more answers

3(5a-b) - 2(3a-b) answer step by step​

3(5a-b) - 2(3a-b) answer step by step