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RideAnS [48]
2 years ago
10

What is the sum o 12/13+(-1/13

Mathematics
1 answer:
Vlad [161]2 years ago
7 0
12/13=.923076923 (-.33333333) -.307692305 or -.30

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Let m represent the number of children playing soccer. Those children are separated into 4 equal teams. Write and expression for
zysi [14]

Answer:

m divided by 4

Step-by-step explanation:

If m is the total children and you need 4 equal teams, then you need to split m up equally into 4  by dividing by 4.

8 0
2 years ago
Find the perimeter of a field that has length 2/x + 1 and width 5/x^2 -1.
Semmy [17]

Answer:

D)4x + 6/(x + 1)(x - 1)

Step-by-step explanation:

A field is basically a rectangle, so to find the perimeter of our field we are using the formula for the perimeter of a rectangle

p=2(l+w)

where

p is the perimeter

l is the length

w is the width

We know from our problem that the field has length 2/x + 1 and width 5/x^2 -1, so l=\frac{2}{x+1} and w=\frac{5}{x^2-1}.

Replacing values:

p=2(l+w)

p=2(\frac{2}{x+1} +\frac{5}{x^2-1})

Notice that the denominator of the second fraction is a difference of squares, so we can factor it using the formula a^2-b^2=(a+b)(a-b) where a is the first term and b is the second term. We can infer that a=x^2 and b=1^2. So, x^2-1=(x+1)(x-1). Replacing that:

p=2(\frac{2}{x+1} +\frac{5}{x^2-1})

p=2(\frac{2}{x+1} +\frac{5}{(x+1)(x-1})

We can see that the common denominator of our fractions is (x+1)(x-1). Now we can simplify our fraction using the common denominator:

p=2(\frac{2(x-1)+5}{(x+1)(x-1)} )

p=2(\frac{2x-2+5}{(x+1)(x-1)} )

p=2(\frac{2x+3}{(x+1)(x-1)} )

p=\frac{4x+6}{(x+1)(x-1)}

We can conclude that the perimeter of the field is D)4x + 6/(x + 1)(x - 1).

3 0
3 years ago
Which ordered pair is a solution to the system of linear equations below?
harkovskaia [24]
It’s A I got it right
6 0
3 years ago
There is a circle with a diameter of 2. Round to nearest tenth!
marshall27 [118]

Answer:

There is a circle with a diameter[d] of 2.

Step-by-step explanation:

the Radius=diameter /2=2/2=1 units

now

circumference=2πr=2×π×1=6.29=6 units

area=πr²=3.14 unit²

3 0
2 years ago
The straight line y = mx +b passes through point C(−2, 3) and intersects the X-axis at point A, and the Y-axis at point B. Find
masya89 [10]
(-2,3) (2,1) -2-1=-3 3-2=1 so that means mx+-3
7 0
3 years ago
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