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3 years ago

Simplify 7 + (−3) A -10 B -4 C 4 D 10

Mathematics

2 answers:

ANEK [815]3 years ago

6 0

Answer:

Step-by-step explanation:

The plus and minus sign cancel each other out so it becomes 7-3=4

tester [92]3 years ago

5 0

the correct answer is c 4

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Simplify the complex fraction: ((3x-7)/x^2)/(x^2/2)+(2/x)

Archy [21]

Simplify the complex fraction: ((3x-7)/x^2)/(x^2/2)+(2/x)

$\dfrac{ \dfrac{3x-7}{x^2} }{ \dfrac{x^2}{2} } + \dfrac{2}{x} =\qquad \qquad x \neq 0\qquad x^4 \neq 0 \\ \\ \\ \dfrac{(3x-7)*2}{x^2*x^2}+ \dfrac{2}{x} = \\ \\ \\ \dfrac{6x-14}{x^4}+ \dfrac{2}{x} =\\ \\ \\ \dfrac{ 6x-14 }{ x^4 }+ \dfrac{2(x^3)}{x(x^3)}=\\ \\ \\ \boxed{ \dfrac{ 6x-14 +2x^3}{ x^4 } }$

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3 years ago

An electronic manufacturing company has determined that the monthly cost of producing x units of its newest stereo is C(x) = 250

SCORPION-xisa [38]

Answer: The monthly marginal profit when 8250 units are produced and sold is 2,427,125 dollars

Step-by-step explanation:

C(x) = 2500 + 10x

D(x) = 60000 - x/1500

Use the demand equation to find the monthly revenue equation.

R(x) = x.D(x) = x(60000 - x/1500) = 60000x - x²/1500

Find the monthly profit equation

P(x) = R(x) - C(x) = 60000x - x²/1500 - (2500 + 10x) =

60000x - x²/1500 - 2500 - 10x = 60000x - x² - 3750000 - 15000x/1500 =

45000x - x² - 3750000/1500

use it to compute the monthly marginal profit for a production level of 8250 units

P(8250) = 45000*8250 - 8250² - 3750000/1500 = 2,427,125

The monthly marginal profit when 8250 units are produced and sold is 2,427,125 dollars

3 0

3 years ago

Read 2 more answers

Express the indicated degree of likelihood as a probability value.Your mother did not die two years before you were born.

Sergeeva-Olga [200]

Answer: 1

Step-by-step explanation:

In reality , the child will not born, if mother die before his conception and keeping in mind that the pregnancy takes about 9 months after conception.

Now according to the statement "Your mother could not have died two years before you were born." is always true and therefore the probability equals 1 .

6 0

3 years ago

The vertex form of the equation of a parabola is y = 4(x - 2)2 - 1. What is the standard form of the equation?

Paladinen [302]

Ok so your original equation was y=4(x-2)²-1
Therefore we need to expand the bracket to find the original equation.
To do this we need to find (x-2)²=x²-4x+4
Now we multiply this by 4 and subtract 1
4x²-16x+15 Therefore B is the answer

8 0

3 years ago

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2. An Evergreen Eagle flies about 13 meters in one second. How many kilometers could it fly in 20 minutes? *

Salsk061 [2.6K]

Answer:

Evergreen Eagle can will fly 1.56 km in 20 minutes.

Step-by-step explanation:

Speed of Evergreen Eagle = $\frac{\text{Distance}}{\text{Time}}$