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dexar [7]
3 years ago
7

If x + 3(2x-5) = 6 then x = O -3 3 O 15 O Option 4 O-14

Mathematics
2 answers:
Naily [24]3 years ago
8 0

Answer:

<h3>\boxed{ \boxed{ \bold{ \sf{3}}}}</h3>

Step-by-step explanation:

\sf{x + 3(2x - 5) = 6}

Distribute 3 through the parentheses

⇒\sf{x + 6x - 15 = 6}

Collect like terms

⇒\sf{7x  - 15 = 6}

Move constant to right hand side and change it's sign

⇒\sf{7x = 6 + 15}

Add the numbers

⇒\sf{7x = 21}

Divide both sides of the equation by 7

⇒\sf{ \frac{7x}{7}  =  \frac{21}{7} }

Calculate

⇒\sf{x = 3}

Hope I helped!

Best regards!

Ronch [10]3 years ago
7 0
<h2>x = 3</h2>

Step-by-step explanation:

x + 3(2x - 5) = 6 \\ x + 6x - 15 = 6 \\ 7x = 6 + 15 \\ 7x = 21

\frac{7x}{7}  =  \frac{21}{7}  \\ x = 3

Step 1 Use 3 to open the bracket

Step 2: Collect like terms and simplify

Step 3: Divide both sides by 7

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Yuri [45]
No because it would be
if you knew that
ax^2+bx+c was a trinomial square, then the factored form would be
( \sqrt{a}x+ \sqrt{c})^{2} or ( \sqrt{a}x- \sqrt{c})^{2}
so
if w^2-9w+81 is perfect square, factored form is either
( \sqrt{1}x+ \sqrt{81})^{2} or ( \sqrt{1}x- \sqrt{81})^{2}  aka ( x+9)^{2} or  ( x-9)^{2}
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(x-9)^2=x^2-18x+81 wrong

so it is not






8 0
3 years ago
Which pickle jar deal has the best price per ounce? $3.45 or 14 oz $4.35 for 16 oz $3.29 for 12 oz $4.25 for 15 oz
Allisa [31]
To find the answer divide each money amount by the cost:
3.45/14=<span>0.246428571429
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Hope this helps!

8 0
3 years ago
The temperature at noon was ­ 8 °.<br> How many degrees colder is 15°?
Nitella [24]

Answer:

7 degrees colder

Step-by-step explanation:

15 degrees - 8 degrees = 7 degrees

6 0
3 years ago
A $50 item was marked up 20%. What is the total increased cost of the item?​
GenaCL600 [577]

They increased it by $10.

It ended up costing $60.

Hope this helps.

4 0
3 years ago
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Romashka-Z-Leto [24]

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5 0
3 years ago
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