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LenKa [72]
3 years ago
11

Write an equivalent expression for (2 m + 3) (m - 1)​

Mathematics
1 answer:
Dmitry [639]3 years ago
4 0

Answer:

2m^2-3m-9

Step-by-step explanation:

use FOIL

F-firsts

2m*m=2m^2

O-outer

2m*-3=-6m

I-inner

3*m=3m

L-lasts

3*-3=-9

2m^2-6m+3m-9\\\\-6m+3m=-3m\\\\2m^2-3m-9

(2m+3)(m-3)

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-2+y=9 3x-7y=3 solve the system by the substitution
REY [17]

Answer:

80/3 or 26 2/3

Step-by-step explanation:

-2 + y = 9 (subtract y from both sides)

-2 = 9 - y (subtract 9 from both sides)

-2 - 9 = y (multiply both sides by -1)

2 + 9 = y (simplify)

11 = y (substitute)

3x - 7 (11) = 3 (multiply)

3x - 77 = 3 (subtract 3 from both sides)

3x - 80 = 0 (subtract 3x from both sides)

-80 = -3x (multiply both sides by -1)

80 = 3x (divide both sides by 3)

80/3 = x (simplify if needed)

26 2/3 = x

5 0
3 years ago
15 POINTSSSS‼️‼️
Olenka [21]

Answer:

If the company produce and sell 'x' no. of thing-a-ma-bob , then

C(x) = $ (8809 + 2.05x)

R(x) = $ 4.92x

To make a profit the company must produce and sell at least 3070 thing-a-ma-bobs.

Step-by-step explanation:

If the company produces and sells "x" no. of thing-a-ma-bob, then,

the cost function is given by,

C(x) = $ (8809 + 2.05x) ------------------------(1)

The revenue function is given by,

R(x) = $ 4.92x -------------------------------------(2)

If C(x) = R(x), then,

4.92x = 8809 + 2.05x

⇒ 2.87x = 8809

⇒ x = \frac {8809}{2.87}

⇒ x \simeq 3069.34

So, to make a profit the company must produce and sell at least 3070 thing-a-ma-bobs.

6 0
4 years ago
In​ 2006, the population of a country was 45.4 million people. From 2006 to 2050 the​ country's population is expected to decrea
Valentin [98]
2006 Pop. = 47.9 million

Expected decrease = 4.8% = .048

Expected population = 47.9 million (1- .048) = 45.60 million
7 0
3 years ago
A snowbarder decends a 12000-ft hill in 3min. hat is the mean change in evlevation per min.
Marta_Voda [28]
If the snowboarder descends 12000 feet hill in 3 minutes, then in one minute he'll descend 12000 / 3 = 4000 feet. So the mean change in elevation per minute is 4000 feet per minute.
8 0
3 years ago
Referring to Q3, suppose that the standard deviation of the random deviation 휖is 350 psi. a.What is the probability that the obs
fgiga [73]

Answer:

Please see the attached file for the complete answer.

Step-by-step explanation:

Download pdf
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3 years ago
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