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Cara evaluated the expression below.



What was Cara’s error?
Cara multiplied only 4 and 7 together and did not multiply 4 and 13.
Cara evaluated (-4)² incorrectly.
Cara subtracted 2 from 6 incorrectly.
Cara multiplied 2 and 4 incorrectly.

Cara evaluated the expression below What was Caras error Cara multiplied only 4 and 7 together and did not multiply 4 and 13 Cara evaluated 4 incorrectly Cara s class=

Respuesta :

texaschic101
she multiplied 4 and 7 together and did not multiply 4 and 13

4(7 - 13) / 3 = (28 - 52)/3 <== that is what it should be....not (28 - 13) / 3

Answer:

Cara  multiplied only 4 and 7 together and did not multiply 4 and 13.

Step-by-step explanation:

Let us evaluate the given expression step by step,

[tex]\frac{4(7-13)}{3} +(-4)^{2} -2(6-2)\\[/tex]

We can evaluate this expression in two ways; either by subtracting -13 from 7 and then multiply by 4 or by multiplying 4 to 7  and -13.

[tex]\frac{28-52}{3} +16-2(4)[/tex]

[tex]\frac{-24}{3} +16-8[/tex]

[tex]-8+16-8=-16+16=0[/tex]

Now let us see where Cara made an error. We can see Cara just multiplied only 4 and 7 together and did not multiply 4 to 13.

Therefore, Cara made error in her first step.

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