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Kamila [148]
3 years ago
6

Homework Help: All of the following expressions are equivalent except _____.

Mathematics
1 answer:
dedylja [7]3 years ago
6 0
x-2=-2+x=x+(-2) \not= 2-x

x-2, -2+x and x+(-2) are all the sum of x and -2.
2-x is the sum of -x and 2.

All of the following expressions are equivalent except 2-x.
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Joe what's to build a fence for his dog Charlie he plans to surround the rectangle to the right with fence. How many feet will h
Aleksandr [31]
Joe wants to build a fence for his dog Charlie.
The lengths of the perimeter of the rectangle that he plans to surround with fence are as follows:

10 feet + 15 feet + 10 feet + 15 +feet.

The total perimeter area of a rectangle is worked out as follows:
10 + 15 + 10 + 15 = 50 
Therefore Joe needs 50 feet of fencing to totally surround the rectangle with fence. 
3 0
4 years ago
John wants to construct a dog pen at the back of his garage. he will use the wall of the garage as one side of the pen and will
Komok [63]

If . he will use the wall of the garage as one side of the pen and will construct the rest of the rectangular pen from 28 yards of fencing. The maximum area that can be achieved for the dog pen is: 392 yards².

<h3>Maximum area </h3>

Let x represent the  width of the fence

Let the two widths represent  2x

Let the  length of one side represent 28-x

Let A represent Area

Hence,

A=x(28-x)

=-x²+28x

Using calculus or vertex = -b/2a,

x value = -28/-2

x = 14

2x = 28

So,

Maximum area= 14 ×28

Maximum area = 392 yards²

Therefore the maximum area is 392 yards².

Learn more about maximum area here: brainly.com/question/16665507

#SPJ1

8 0
1 year ago
Solve the equation.<br> -2/3 (x + 3/5) = 1/2<br><br><br><br> x=
Rom4ik [11]
−
2
3
(
x
+
3
5
)
=
1
2
Step 1: Simplify both sides of the equation.
−
2
3
(
x
+
3
5
)
=
1
2
(
−
2
3
)
(
x
)
+
(
−
2
3
)
(
3
5
)
=
1
2
(Distribute)
−
2
3
x
+
−
2
5
=
1
2
Step 2: Add 2/5 to both sides.
−
2
3
x
+
−
2
5
+
2
5
=
1
2
+
2
5
−
2
3
x
=
9
10
Step 3: Multiply both sides by 3/(-2).
(
3
−
2
)
*
(
−
2
3
x
)
=
(
3
−
2
)
*
(
9
10
)
x
=
−
27
20
Answer:
x
=
−
27
20
6 0
3 years ago
Please help with this
Svetllana [295]
To solve this equation, all you need to do is substitute the value of x that would be like this y = -2 (-3) -7 and solve, the answer would be -1.
7 0
3 years ago
Find the interest on a Principal Balance of $10,000 over the course of eight years with an interest rate of 5.5%. Do this for: S
o-na [289]
10,000$(1+0.055*8)
This is the formula of simple interest

10,000+10,000(0.055*t)
10,000$(1+0.055*8)=14,400
8 0
3 years ago
Read 2 more answers
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