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3 years ago

Pedro solves the quadratic equation x^2+6x –14 using the quadratic formula. In which step did Pedro make an error?

Mathematics

1 answer:

Nutka1998 [239]3 years ago

3 0

9514 1404 393

Answer:

correct choice is marked

Step-by-step explanation:

The error is in step 2. The square root cannot be distributed to a sum.

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23.

Crazy boy [7]

Answer:

The number that cannot be the largest possible 6-digit number is;

(D) AAABCB

Step-by-step explanation:

From the question, we have;

A, B, and C = Distinct digits, therefore, A ≠ B ≠ C

The number of digits in the number to be formed = 6 digits

The number of 'A' in the number to be formed = 3

The number of 'B' in the number to be formed = 2

The number of 'C' in the number to be formed = 1

We have;

When A > B > C

The largest possible number = AAABBC

When C > A > B

The largest possible number = CAAABB

When B > A > C

The largest possible number = BBAAAC

When A > C > B

The largest possible number = AAACBB

Therefore, given that when A > B > C, the largest possible number = AAABBC, we have;

AAABBC > AAABCB, because B > C, therefore, within the tens and unit of the two 6 digit numbers, we have, BC > CB

∴ AAABBC > AAABCB and AAABCB, cannot be the largest possible 6-digit number

3 0

3 years ago

What aspect of the town are most at risk for damage by the fire??

Stolb23 [73]

Answer:

Trees.

Step-by-step explanation:

The houses look sturdy, and not that flammable. The trees and grass are very plentiful, so they would spread easily.

Please clarify if this wasn't what you were asking.

7 0

3 years ago

Find the distance between the points. (9.7, -2.1), (-3.2, 8.1)

seropon [69]

The answer you are going to be looking for with this question is 16.4. Hope this helps you out a little :)

4 0

3 years ago

What is the solution to this equation? 8x - 5 (x-3) = 18

Kaylis [27]

Answer:

x=1

Step-by-step explanation:

We distribute the negative 5 to x minus three to get 8x-5x+15=18. Then, we cancel out the 15 by subtracting it from both sides. This leaves us with 8x-5x=3. When we subtract, we get 3x=3, and when we divide both sides by 3, we get x=1. Hope this helps :)

3 0

3 years ago

The cost (in dollars) in making b bracelets is represented by 4+5b. The cost (in dollars) of making b necklaces is represented b

ddd [48]

Answer:

$P(b)=3b+2$

Step-by-step explanation:

The cost (in dollars) in making b bracelets is represented is

$B(b)=4+5b$

The cost (in dollars) of making b necklaces is

$N(b)=8b+6$

To find how much more it will cost to make b necklaces than b bracelets, we find the difference,

$P(b)=N(b)-B(b)$

$P(b)=8b+6-(4+5b)$

$P(b)=8b+6-4-5b$

$P(b)=3b+2$

This is a polynomial in descending powers of b, hence it is in standard form;

8 0

4 years ago