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vaieri [72.5K]
3 years ago
6

15x + 9 = 3(2x - 6) PLease Help me Ive benn stuck on this

Mathematics
2 answers:
Vitek1552 [10]3 years ago
5 0

Answer: x=−3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

15x+9=3(2x−6)

15x+9=(3)(2x)+(3)(−6)(Distribute)

15x+9=6x+−18

15x+9=6x−18

Step 2: Subtract 6x from both sides.

15x+9−6x=6x−18−6x

9x+9=−18

Step 3: Subtract 9 from both sides.

9x+9−9=−18−9

9x=−27

Step 4: Divide both sides by 9.

9x/9 = -27/9

x=−3

trapecia [35]3 years ago
3 0

Answer:

x= -3

Step-by-step explanation:

First let's work on the right side and use distributive property

15x+9= 3(2x-6)

15x+9= 6x-18

    -9         -9

15x= 6x-27

-6x  -6x

9x= -27

9x/9= -27/9

x= -3

Hope this helps!

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How many groups of 1/2 days are in 1 week? Write a multiplication equation or a division equation to represent the question, the
worty [1.4K]

Answer:

14 groups

Step-by-step explanation:

Given

Groupings = \frac{1}{2}\ day

Duration = 1\ week

Required

Determine the number of group in the week

To do this, we simply divide the duration by the number half day group.

This gives:

Group = \frac{Duration}{Groupings}

Group = \frac{1\ week}{1/2\ days}

Convert week to days

Group = \frac{7\ days}{1/2\ days}

Group = \frac{7}{1/2}

Group = 7 / \frac{1}{2}

Convert to multiplication

Group = 7 * \frac{2}{1}

Group = \frac{14}{1}

Group = 14

<em>Hence, there are 14 groups</em>

4 0
3 years ago
A canadian goose and a Great blue heron took off in opposite directions. The goose flew at 20 mph, and the heron flew at 10 mph.
iris [78.8K]

The Canadian goose flew for 4 hours and the Great blue heron flew for 10 hours

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let a represent the time flown by the goose and b represent the time flown by the heron. Hence:

a + b = 14    (1)

Also:

20a + 10b = 180   (2)

From equation 1 and 2:

a = 4, b = 10

The Canadian goose flew for 4 hours and the Great blue heron flew for 10 hours

Find out more on equation at: brainly.com/question/2972832

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4 0
1 year ago
7 gal 1 pt - 2 gal 7 pt =
Rus_ich [418]

Answer:

4 gal 2 pt

Step-by-step explanation:

8 pt = 1 gal

7 gal 1 pt = 57 pt

2 gal 7 pt = 23 pt

57 pt - 23 pt = 34 pt

34 pt = 4 gal 2 pt

5 0
3 years ago
Read 2 more answers
What is the prime factorization for 147
NemiM [27]
Prime Factorization = Divide by factors that are prime number

147 ÷  3 = 49
49 ÷ 7 = 7
7 ÷ 7 = 1
 
147 = 3 x 7 x 7

147 = 3 x 7²

-------------------------------------------------------------------------------
Answer: 147 = 3 x 7²
-------------------------------------------------------------------------------
4 0
3 years ago
Read 2 more answers
Which values of a, b, and c correctly represent the answer in simplest form?
sergiy2304 [10]

Answer:

The answer for this is a=1,b=7,c=19.

5 0
2 years ago
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