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Sveta_85 [38]
3 years ago
11

The algebraic expression 2x -4 when x=8 is evaluated as

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
3 0

Answer:

12

Step-by-step explanation:

2x-4

Subsitute x for 8 2(8)-4

Simply 16-4

12

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Rewrite the product (x-3)^2 in standard form. Show your work
arsen [322]

Answer:

x² - 6x + 9

Step-by-step explanation:

(x - 3)²

= (x - 3)(x - 3)

Each term in the second factor is multiplied by each term in the first factor

= x(x - 3) - 3(x - 3) ← distribute both parenthesis

= x² - 3x - 3x + 9 ← collect like terms

= x² - 6x + 9 ← in standard form

8 0
3 years ago
1)
lisabon 2012 [21]
<span>186.556 celcius

</span><span>6.63 kg

it should be 21.6

yes, estimate. it did not ask for the exact, so you can just give a estimate

</span><span>Barry buys a DVD for $19.95 and a flash drive for 14.95. He gives the cashier $40. The cashier wants to know how much change to give Barry.
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3 0
3 years ago
Read 2 more answers
When 6x² - 4x+3 is subtracted<br> from 3x²–2x+3, the result<br> is
mr_godi [17]
Let's subtract then: 3x2 - 2x + 3 - (6x2 - 4x + 3)

taking out of the bracket with a changed sign: (there is a minus in front of the bracket)

3x2 - 2x + 3 - 6x2 + 4x - 3
let's reshuffle them so that similar terms are together:
3x2 - 6x2 - 2x + 4x + 3  - 3

Adding up similar terms:

-3x2 + 2x - that's our option 2!


4 0
3 years ago
Rewrite the equation by completing the square.
ser-zykov [4K]

Answer:

4 × 2 + 20×

Step-by-step explanation:

please your questions are mixed up

4 0
3 years ago
I need the answer ASAP
iVinArrow [24]

Answer:

5

Step-by-step explanation:

When squaring the number 5 (i.e 5^2 ) the answer is 25. 5^{2} is the same thing as 5 times 5. Basically with the square root, you are going backwards, so you are therefore finding the base of it all.

7 0
3 years ago
Read 2 more answers
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