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babunello [35]
3 years ago
12

Is this problem right because I need to know thanks!!

Mathematics
1 answer:
inna [77]3 years ago
8 0

Sadly, the answer to your question is 'No'.  The work written under
the problem on the paper is not correct ... because you tried to do
too much !

You can't combine 'm' terms with 'n' terms or with plain numbers.
They all need to stay separate all the way to the end.

So, actually, your first written line is the answer . . .  <em>7m - 35 + 3n</em>

That's as far as you can go.  You can't combine these terms. Stop there !


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Solve for x 5x - 10 = -10​
Zigmanuir [339]

Answer:

the answer is x = 0

Step-by-step explanation:

Cancel equal terms on both sides of the equation:

5x = 0

Divide both side of the equation by 5.

x = 0

Therefore, the answer is x = 0

3 0
3 years ago
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In 2010, there were 311 middle schools in Virginia. In 2016, there were 306. By what percent did the number of middle schools in
Nataly_w [17]

Answer:1.6%

Step-by-step explanation: no of students in 2010=311

no of students in 2016=306

difference=311-306

                 =5

%decrease=5/311 x 100

3 0
3 years ago
Factor:<br><br><br>(m+2)^2−(m+2)+mn·(n+2)+2n(n+2)
bazaltina [42]
ANSWER
{(m + 2)}( {n}^{2} + 2n + m + 1)

EXPLANATION

The given expression is

{(m + 2)}^{2} - (m + 2) + mn(n + 2) + 2n(n + 2)

We factor to get,

= {(m + 2)}(m + 2 - 1) +n (n + 2) (m+ 2)

This implies that,

= {(m + 2)}(m + 1) +n (n + 2) (m+ 2)

We factor further to obtain,

= {(m + 2)}((m + 1) +n (n + 2))

or

= {(m + 2)}( {n}^{2} + 2n + m + 1)
5 0
3 years ago
The perimeter of a rectangle is 54 feet. The area of the rectangle is 176 square feet. Find the dimensions of the rectangle.
Murrr4er [49]

11 by 16

Explanation:

Set up two equations

2

x

+

2

y

=

54

x

×

y

=

176

Solving the first equation for x

2

x

+

2

y

−

2

y

=

54

−

2

y

this gives

2

x

=

54

−

2

y

Divide both sides by 2

(

2

x

2

)

=

54

−

2

y

2

This gives.

x

=

27

−

y

putting this value into the second equation gives.

(

27

−

y

)

×

y

=

176

multiplying across the parenthesis gives

27

y

−

y

2

=

176

subtracting 176 from both sides gives

is

27

y

−

y

2

−

176

=

0

multiplying by negative one gives

−

27

y

+

y

2

+

176

=

0

factoring this into y gives

(

y

−

11

)

×

(

y

−

16

)

=

0

Solving for both y's gives

y

=

11

,

y

=

16

6 0
2 years ago
Andy is hanging wallpaper in his kitchen. He is able to cover of the walls in the room using 6 rolls of wallpaper. What is the n
slamgirl [31]
The number of rolls per wall is one and a half rolls
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3 years ago
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