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never [62]
3 years ago
6

A friend rewrote the expression 5(x+2)as 5x+2. Wrote a few sentences to your friend explaining the error. Then, rewrite the expr

ession 5(x+2)
Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
7 0

Answer:

5x+2

Step-by-step explanation:

Ok so the expression 5(x+2) is not 5x+2 because you have to use the distributive property. So with that being said:

5(x+2)=5 times x and 5 times 2

so the realest answer is 5x+10 instead of 5x+2

marusya05 [52]3 years ago
6 0

EXPLANATION: The error in the rewritten expression done by your 'friend' is that he/she did not multiply the five in the parenthesis by ALL terms (meaning numbers and/or variables) as he/she should have done according to the distributive property. In the distributive property, you distribute equally to all numbers and parts in the equation or expression.

Take, For example, 7(x+4). Instead of just multiplying 7 times x in the parenthesis, you would also multiply seven times to four and add that to the end of the expression, making the rewritten expression 7x+28.


So, the correct rewritten expression for this problem is 5x+10.


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Cindy and Zoey work at a store. Both girls earn $6.25 per hour
wolverine [178]

Answer:

Step-by-step explanation:

I think this is your full question, right?

<em>Cindy and Zoey work at a store. Both girls earn $6.25 per hour. During a normal week Cindy works 15 hours and  Zoey works 20 hours. The expression 6.25(15) + 6.25(20) can be used to calculate the total amount of money that the  girls earned in one week. Which expression shows another way to calculate the amount of money the girls earn in  one week?  </em>

My answer:

The expression shows another way must be equal to: <em>6.25(15) + 6.25(20)  </em>

<=> 6.25 (15+20)

Because both girls earn the same per hour.

8 0
3 years ago
Could someone please help me solve this problem?
Iteru [2.4K]

Hello!

<u><em>Answer:</em></u>

<u><em>n=-9</em></u>

<u><em>*The answer must have a negative sign.*</em></u>

Step-by-step explanation:

First, you subtract by 7 from both sides of an equation.

7+2n-7=-11-7

Then, you simplify.

2n=-18

Next, you divide by 2 from both sides of an equation.

\frac{2n}{2}=\frac{-18}{2}

And finally, simplify and solve. You can also dividing into the groups.

18/2=9

n=-9

Hope this helps!

-Charlie

Have a great day!

Thanks!

:)

:D

4 0
3 years ago
Read 2 more answers
Which equation is the slope intercept form of this equation?
solmaris [256]

Answer:

<h2>A) y = -2x + 14</h2>

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

<em />

We have the equation i point-slope form.

Convert to the slope-intercept form:

y-4=-2(x-5)    <em>use the distributive property</em>

y-4=-2x+(-2)(-5)

y-4=-2x+10             <em>add 4 t oboth sides</em>

y-4+4=-2x+10+4\\\\y=-2x+14

4 0
3 years ago
ABC is similar to mno the scale factor from mno to ABC is 3/2 what's the length of no
saw5 [17]

Answer:

ok

Step-by-step explanation:

4 0
3 years ago
(-2x²y)³ / (xy²z)² * (-yz)² Hello guys, im having trouble with this babe...
Masja [62]
\frac{(-2x^2y)^3}{(xy^2z)^2(-yz)^2}

On top: (-2)³ = -2 × -2 × -2 = -8
(x²)³ = x^6 (the exponents multiply)
and of course, (y)³ = y³

On the bottom: (xy²z)² = x² y^4 z²
(-yz)² = y²z²
Multiplying these together, the exponents add and we get x² y^6 z^4.

\frac{-8x^6y^3}{x^2y^6z^4}

So, your reasoning is correct for what you have so far.

Your next step would be cancelling shared factors from the top and bottom.
Just like with regular fractions, if the numerator and denominator are divisible by the same number, you can divide them by it to simplify. (ex: 4/6 = 2/3)

Well, x^6 and x^2 are both divisible by x^2, right?
We can also cancel the y^3.

It might help to visualise the factors like this:

\frac{-8xxxxxxyyy}{xxyyyyyyzzzz}

Once you've cancelled out x² and y³ from each, you're left with

\boxed{\frac{-8x^4}{y^3z^4}}
7 0
4 years ago
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