2 years ago

jack got the expression 7x+1 and then wrote his answer as 1+7x is his answer an equivalment expression how do you know

Mathematics

1 answer:

Ugo [173]2 years ago

6 0

The equation was just flipped around, it will equal the same no matter what.

I hope this helps!! :)

You might be interested in

Need help plz i show me how to do it plz :)

DaniilM [7]

I’m pretty sure you multiply the sides your you find the formulas for the hight and width

8 0

3 years ago

Read 2 more answers

One cell phone plan charges 20$ per month plus$0.15 per minute used.

maw [93]

So for the first one... Let's just use x for months and m for minutes.

(20m)+(.15m)

20 times the number of months plus .15 times the number of minutes

Same for the next one

(35x)+ (.10m)

35 times the number of months +.10 times the minutes.

7 0

3 years ago

Read 2 more answers

At your hardware store, you buy hammers for a $30.00 a dozen and sell them for $3.50 each. What is the percent markup for the ha

kvasek [131]

I believe it’s 1.4%. 3.5/2.5=1.4

7 0

3 years ago

What is the value of x in the equation 2|3(1|2x+12)=1|2(1|3x+14)-3

lubasha [3.4K]

Answer:

x=-24

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Five times Carl's age plus three times Jill's age equals 110. Jill's age is also two times Carl's age. How old is Carla ?

aleksklad [387]

X - Carl's age
y - Jill's age

$5x+3y=110 \\
y=2x \ \ \ |\times (-3) \\ \\
5x+3y=110 \\
\underline{-3y=-6x} \\ 5x+3y-3y=110-6x \\ 5x=110-6x \\ 5x+6x=110 \\
11x=110 \\
x=10$

Carl is 10 years old.

6 0

3 years ago