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Eduardwww [97]
2 years ago
9

Help help math math math math

Mathematics
2 answers:
Kryger [21]2 years ago
7 0

Answer:

C. -3/7

Step-by-step explanation:

Irrational numbers: cannot be written as a fraction

Rational numbers: can be written as a fraction

The only option that contains a fraction, is C

Hope this helps!

Colt1911 [192]2 years ago
5 0
<h3>Answer:</h3>

Option C

<h3>Solution:</h3>
  • Rational numbers can be expressed as a fraction in the form \displaystyle\frac{p}{q}, where p is the numerator and q is the denominator.
  • Now, which numbers can and cannot be expressed as a fraction?
  • First of all, can we express \sqrt{12} as a fraction? No, it's a surd.
  • Can we express \pi as a fraction? No. Remember, pi is irrational. It has an infinite number of digits after the decimal point (same with √12)
  • Can we express -\displaystyle\frac{3}{7} as a fraction? Sure. What's more, it's already a fraction.
  • Can we express √7 as a fraction? No. It's also irrational, like √12 and π.

Hope it helps.

Do comment if you have any query.

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Answer:

The answer is C

Step-by-step explanation:


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3 years ago
What is the answer of 2/3+12a
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2(1/3+6a)
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Read 2 more answers
0/3 x 11 &gt; 11 , whats the empty 0?
Cloud [144]

Answer:

This inequalitie is wrong because 0 is not more than 11

Step-by-step explanation:

8 0
3 years ago
Rachel has 30 pounds of a mixture of candy that sells for $1.00/lb. If lollipops sell for $0.95/lb and caramel candies sell for
dimulka [17.4K]
L = pounds of lollipop
c = pounds of caramel candies

0.95l + 1.10c = 30 ($0.95/lb & $1.10/lb)
l + c = 30 (mixture sells for $1/lb)
c = 30 - l

0.95l + 1.10(30 - l) = 30 (Substitution)
0.95l + 33 - 1.10l = 30
-0.15l = -3 (move terms)
l = 20lbs

Hope this helps.
4 0
3 years ago
You work at a farm that wants to build three identical rectangular corrals in a row against the side of a barn using 112 ft of f
Luden [163]

Answer:

x  =  14 ft

y  =  56 ft

A(max corral)  =  784/3   =  261.33 ft²

Step-by-step explanation:

Let´s call y the side parallel to the barn, then only one y is going to be fenced.

If we are going to divide the area in three identical corrals we need 4 times x ( the other side perpendicular to the barn)

The perimeter of the rectangular area ( divide in three identical corrals)

112  =  y  +  4*x        or    y  =  112  -  4*x

A (r)  =  x*y

Area as a function of x  is

A(x) = x* ( 112  -  4*x)        A(x)   =  112*x  -  4*x²

Tacking derivatives on both sides of the equation

A´(x)  =  112  - 8*x       A´(x) = 0    112  -  8*x  =  0

x  =  112/8

x  =  14 ft

And  y  =  112  -  4*x     y  =  112 - 56

y  =  56 ft

A(max)  =  14 * 56  =  784 ft²

A(max corral)  =  784/3   =  261.33 ft²

How do we know the area is maximum, tacking the second derivative

A´´(x)  =  - 8     A´´(x) < 0

Then the function A(x) has a maximum at the point x = 14

6 0
3 years ago
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