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Tanya [424]
3 years ago
6

PLS HELP ASAP I NEED HELP!

Mathematics
2 answers:
trasher [3.6K]3 years ago
8 0
The correct answer is B. 3x^2-8x-1 because when you combine like-terms, it yields this answer.

ollegr [7]3 years ago
6 0
(2x² - 4x + 3) + (x² - 4x - 4) =
2x² - 4x + 3 + x² - 4x - 4 =
3x² - 8x -1

B.
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Can someone please answer and explain thank you! I’ll mark brainliest
k0ka [10]

Answer:

Step-by-step explanation:

You first multiply the a with bx and c then after the answer when you multiply you "add" with it would be something like

ex: 6x+4=28

         - 4  -4     subtract both sides

------------------------

        6x=24      then divide 6 with 24.

         x= 3      

6 0
3 years ago
Read 2 more answers
Use substitution to write an equivalent quadratic equation.<br> (3x + 2)2 + 7(3x + 2) – 8 = 0
ANEK [815]
Let z = 3x+2. Then, by substitution, your equation is
.. z^2 +7z -8 = 0

_____
This equation can be factored as
.. (z +8)(z -1) = 0
.. x = -8 or +1
Then
.. 3x +2 = -8 or +1
.. 3x = -10 or -1
.. x = -10/3 or -1/3

6 0
3 years ago
Read 2 more answers
there are 112 males and 78 females working at a hospital. what percentage of hospitals workforce is females?
Juli2301 [7.4K]
<span>112+78=total workforce=190
so 78/190=.410526=41.0526%
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6 0
3 years ago
Find equation of the line passing through(0,-3),which has a gradient of 2
WINSTONCH [101]

Answer:

y = 2x - 3

Step-by-step explanation:

y - - 3 = 2(x-0)

y + 3 = 2x

y = 2x -3

7 0
3 years ago
Which of the following expressions are equivalent? Justify your reasoning,
marshall27 [118]

Answer:

B and D

Step-by-step explanation:

B:

Anything to a negative power means that it is 1/that to the positive power.

E.g. x^-1 = 1/x^1

In other words, anything to the power of a negative switches sides of a fraction (i.e. if in numerator moves to denominator and vice versa.)

1/x^-1 = 1/1/x^1 which is just equal to x, because there are x number of 1/xs in one (1/x * x =1) Therefore Option B is equal to just x.

D: (assuming the first given term is x^1/3 and not X1/3 (?) Correct me if I'm wrong).

x^1/3 * x^1/3 * x^1/3 is also equal to just x.

This is because when multiplying together terms with the same base (x in this case) the exponents just add together, so:

x^1/3 * x^1/3 * x^1/3 = x^(1/3 +1/3 +1/3) = x^1 = x.

Therefore B and D are equivalent because they both equal x.

Hope this helped!

7 0
3 years ago
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