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choli [55]
3 years ago
12

I don’t now the answer

Mathematics
1 answer:
VLD [36.1K]3 years ago
3 0

<em>WHAT</em><em> </em><em>DO</em><em> </em><em>U</em><em> </em><em>Mea</em><em>n</em><em>?</em><em>?</em><em>?</em>

<em>Dont</em><em> </em><em>waste</em><em> </em><em>your</em><em> </em><em>points</em><em> </em><em>in</em><em> </em><em>such</em><em> </em><em>unnecessar</em><em>y</em><em> </em><em>things</em><em>.</em>

<h2><em>hope</em><em> </em><em>u</em><em> </em><em>understand</em><em>.</em><em>.</em><em>.</em></h2>
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Ella completed the following work to test the equivalence of two express
murzikaleks [220]

Answer:

The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.

Step-by-step explanation:

<u>Equivalent algebraic expressions</u> are those expressions which on simplification give the same resulting expression.

Two algebraic expressions are said to be <u>equivalent</u> if their values obtained by substituting any values of the variables are same.

Two expressions 3f+2.6 and 2f+2.6 are not equivalent, because when f=1,

3f+2.6=3\cdot 1+2.6=3+2.6=5.6\\ \\2f+2.6=2\cdot 1+2.6=2+2.6=4.6\\ \\5.6\neq 4.6

Method of substitution can only help her to decide the expresssions are not equivalent, but if she wants to prove the expressions are equivalent, she must prove it for all values of f.

3f+2.6=2f+2.6\\ \\3f=2f\\ \\3f-2f=0\\ \\f=0

This is true only when f=0.

Hence,

The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.

5 0
3 years ago
Read 2 more answers
What is the sum of the interior angles of a polygon shown below?
GREYUIT [131]

Answer: The sum of the interior angles of a polygon shown  in the picture is 540^{\circ}.

Step-by-step explanation:

The given polygon is a regular pentagon having 5 sides.

The sum of the interior angles of a regular polygon is given by :-

(n-2)\times180^{\circ}, wherer n= number of sides of the regular polygon.

Since it has 5 sides, then the sum of the interior angles of a polygon would be

(5-2)\times180^{\circ}\\\\=3\times180^{\circ}\\\\=540^{\circ}

Hence, the sum of the interior angles of a polygon shown  in the picture is 540^{\circ}.

7 0
3 years ago
Explain how modeling partial products cans be used to find products of greater numbers
frozen [14]
It is easier to multiply. For example: 63 multiply by 7
63 x 7 = (60+3) x 7 =  60 x 7 + 3 x 7 =  420 + 21  =  441

Another example : 25 x 73
25 x 73 = (20+5) x (70+3) = 20 x 70 + 20x3 + 5x70 + 5x3

                                         = 1400 + 60 + 350 + 15           =  1875

7 0
4 years ago
Anybody know ? I need help
pickupchik [31]

Answer:

It's blank

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve this inequality.<br>7x + 2 &gt; 30<br>A.x 224<br>B.x &gt; 196<br>C.x 4<br>D.x &gt; 3​
Oliga [24]

Answer:

x > 4

Step-by-step explanation:

7x + 2 > 30

Subtract 2 from each side

7x + 2-2 > 30-2

7x > 28

Divide each side by 7

7x/7 > 28/7

x > 4

6 0
3 years ago
Read 2 more answers
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