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Eddi Din [679]
3 years ago
5

What is the value of the expression -3x^2y + 4x when x=-4 and y=2

Mathematics
1 answer:
8_murik_8 [283]3 years ago
8 0

Answer:-785

Step-by-step explanation:

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Drawing Conclusions
maksim [4K]

Answer:

Some of the Exponents = -2 that is true, not 2.

Step-by-step explanation:

Let's check one at a time.

(a)The 6 without an exponent is equivalent to the 6 having a 0 exponent.

6^{0} =1 and 6^{1} = 6 (no exponent. 6 \neq 1 therefore this statement is False.

(b)The sum of the exponents is -2.

let's check , if the base is same we can add the exponents that is the exponent rule.(well established).

if we add exponents in the given expression we get.

6^{1} 6^{0} 6^{3} =6^{1+0+(-3)} =6^{-2}, therefore we can see that the sum of the exponents = -2 this is true.

(c) An equivalent expression is 65.6-7, lets evaluate our above expression, it is equal to \frac{1}{36} which we can see that \frac{1}{36}  \neq 65.6-7 ,therefore this statement is false as well.

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3 years ago
Which ordered pair is a solution to - 8x + 6y <3x - 30?
Ivenika [448]

Answer:

B ( 6,-6) ..

I think I'm correct

4 0
3 years ago
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1. Kate is 3 years older than John and 5 years younger than Carri. If John is 12 years old, how old is
Doss [256]

Answer:

20

Step-by-step explanation:

12 + 3 = 15

15+5=20

3 0
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X-Y
alex41 [277]
B) 12

3•3=9 so 4•3=12
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Which number have the same value as 20 tens
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The answer is 200. 20*10=200
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