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Ivahew [28]
2 years ago
6

Which expression is equivalent to 4x2 - 4x – 3 in factored form?

Mathematics
1 answer:
erastovalidia [21]2 years ago
3 0

Answer:

(2x-3)(2x+1)

Step-by-step explanation:

4x^2 - 4x - 3

we need two numbers that give 12 when multiplied and 4 when subtracted

the numbers are 6 and 2 because 6*2=12 and 6-4=4.

4x^2 - (6-2)x -3

4x^2 -6x +2x -3

take common

2x(2x -3)+1(2x-3)

take (2x-3) as common

(2x-3)(2x*1 + 1*1)

(2x-3)(2x+1)

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If f(x)=2x+4 find f(x+1)
zalisa [80]
Just sub in (x+1) wherever x appears:
f(x) = 2x+4
f(x+1) = 2(x+1)+4 = 2x + 2 + 4 = 2x+6
3 0
3 years ago
A silk worm grows twice asd long as it was the day before .If the worm measures v40 mm on the 10 th day, on which day was it 2.5
Arte-miy333 [17]

Answer:

On the sixth day (10 - 4), the worm was 2.5mm long.

Step-by-step explanation:

Giving the following information:

Future Value= 40mm

Present Value= 2.5mm

Number of periods (n)= ?

Growth rate= 100% per day

<u>First, we need to calculate the number of days it will take to grow from 2.5mm (PV) to 40mm (FV):</u>

<u></u>

n= ln(FV/PV) / ln(1+i)  

n= ln (40 / 2.5) / ln (2)

n= 4

It will take 4 days.

On the sixth day (10 - 4), the worm was 2.5mm long.

3 0
3 years ago
Last month, he sold 50 chickens and 30 ducks for $550. This month, he sold 44 chickens and 36 ducks for $532. How do you solve t
Citrus2011 [14]

Answer:

sorry im not sure about the answer but this is how you figure it out

Step-by-step explanation:

50a+30b=550

after you simplify = 5a+3b=55

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after you simplify=11a+9b=133

then you try to find a number

5a+3b=55

then you have to find different possibilities of a and b and if it can fit into both equations then it is correct

3 0
3 years ago
Read 2 more answers
What is the area of 71 length and 27 width of the triangle??
vazorg [7]
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Mr. Morales purchased 218 acres of land for his farm. If the total price of the land was $163,282, how much did each acre cost?
nlexa [21]

Answer:

$749 each

Step-by-step explanation:

6 0
2 years ago
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