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3 years ago

Solve this equation.

Mathematics

2 answers:

Nikolay [14]3 years ago

7 0

Answer:

1,220,703,125

Step-by-step explanation:

5^2=25

25^4=390,625

5^5=3,125

390,625 x 3,125= 1,220,703,125

love history [14]3 years ago

5 0

Answer:

1,220,703,125

Step-by-step explanation:

Honestly don't know how to explain this in any other way than just saying put it in a calculator. Sorry. :p

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Solving Quadratic Equations posttest A. B. C. D.

beks73 [17]

Answer:

D. $x = 3 \pm \sqrt{10}$

Step-by-step explanation:

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3 years ago

How many terms are there in the following expression: 3a + 3ab + 7b – 2c – 4d?

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3 years ago

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A’s DJ service charges a $200 setup fee and $75 an hour after that.

Bogdan [553]

The total cost includes the setup cost + per hour cost.

Let, x represents the time and y represents the total cost.

$y=200+75x$ .... (1)

Let Y represent the cost for B's DJ service.

$y=125x$ .... (2)

a. Graphing both the equations give the intersection point (solution) as (4,500)

It means for 4 hours, the total cost of both the DJ's is same at $500.

b. Substitution Method.

Plug y = 125x in equation (1)

$125x= 200+75x$

$125x-75x=200$

$50x=200$

$x=4$

$y=125\times 4 =500$

Hence, the total cost for 4 hours in both the service is $500.

c. Addition method.

Multiply equation (2) by -1

$-y = -125x$ .... Equation (3).

Add euation (1) and equation (3)

$y+(-y) = 200+75x-125x$

$0=200-50x$

$50x=200, x=4$

$y=500$

Solution: For x = 4, y = 500 ( same as the previous two methods)

For x = 2, equation (1)

$y=200+(75\times 2) = 350$

For x = 2, equation (2)

$y= 125\times 2 =250$

Hence, for 2 hours, DJ B would be a better choice since it would charge $250.

For x = 6 hours, equation (1)

$y=200+(75\times 6) =650$

For x= 6, equation (2)

$y=125\times 6=750$

For 6 hours, DJ A would be better option since it charges $650 for 6 hours.

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3 years ago

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erastovalidia [21]

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The answer is choice A

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