Ask question

Ask question

All categories

3 years ago

10

I need help on 12 and 13

2 answers:

goblinko [34]3 years ago

8 0

12) 7 + 7x
7(x + 1/7)

For the second equation, use the distributive property.
7x + 7 * 1/7
7x + 1

7 + 7x and 7(x + 1/7) are not equivalent expressions.

13) 2.5(3 + x)
2.5x + 7.5

Again, use the distributive property for the first equation
2.5x + 2.5*3
2.5x + 7.5

2.5(3 + x) and 2.5x + 7.5 are equivalent expressions.

Reil [10]3 years ago

3 0

They are not equivalent

You might be interested in

Someone help me please !

Artist 52 [7]

AE x BE = DE x CE

6x5 = 30

6 x DE = 30

DE = 30/6 =5

DC = DE +CE = 5+6 =11

Answer is C) 11

8 0

4 years ago

What is the solution set of these system5x-2y=17 and 4x-7=13?

MatroZZZ [7]

Answer:

x=5

y=4

Step-by-step explanation:

Step 1:

Let us solve for <em>x</em> using the $4x-7=13$ equation by <u>isolating terms containing the variable</u>:

$4x-7=13\\4x=20\\\fbox{x=5}$

Great! <em>x</em> is 5... let's find <em>y</em>.

Step 2:

Since we know the value of <em>x</em>, we can use what we know to find <em>y</em> using the <u>other equation</u>:

$5x-2y=17\\$

<em>Given that x=5, we can </em><u><em>replace</em></u><em> x with 5</em>.

$5*5-2y=17\\25-2y=17\\2y=8\\\\\fbox{y=4}$

<em>I hope this helps! Let me know if you have any questions :)</em>

3 0

3 years ago

last year fred earned $156 every week that he worked.he made a total of $4,680.how many weeks did he work

yanalaym [24]

30 weeks because
$4680 \div 156 = 30$

6 0

3 years ago

Read 2 more answers

A sequence is a function whose domain is the set of __numbers.

MariettaO [177]

Answer - natural

A sequence is a function whose domain is the set of natural numbers.

5 0

3 years ago

Which of the following proportions is false?

lesya [120]

Answer:

D is false

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers