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miv72 [106K]
3 years ago
15

2.1 x 10^5 +4.3 x 10^4

Mathematics
1 answer:
Alla [95]3 years ago
4 0

Answer:

253,000

Step-by-step explanation:

  1. 10^{5} = 100000  
  2. 10^{4} = 10000  
  3. Plug the above answers in: 2.1 × 100,000 + 4.3 × 10,000
  4. 2.1 × 100,000 = 210,000
  5. Plug 210,000 in: 210,000 + 4.3 × 10,000
  6. 4.3 × 10,000 = 43,000
  7. Plug 43,000 in: 210,000 + 43,000
  8. 210,000 + 43,000 = 253,000

I hope this helps!

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PLEASE HELP QUICK, I need to know the answer.
Marysya12 [62]

The equivalent expression is 7^{2}.

We have the following expression -

\frac{7^{-3} }{7^{-5} }

We have to find its equivalent value.

<h3>What is the equivalent expression of the following expression-</h3>

f(x, y) =\frac{A^{x} }{A^{y} }

In order to divide two exponents with same base, we use the 'Quotient property of exponents.

The equivalent expression can be written as -

f(x, y) = A^{x} A^{-y} = A^{x-y}

In the question given we have -

\frac{7^{-3} }{7^{-5} }

Using the property discussed above -

7^{-3}\;7^{5} = 7^{-3+5} = 7^{2}

Hence, the equivalent expression is 7^{2}.

To solve more questions on exponents, visit the link below -

brainly.com/question/17173276

#SPJ5

3 0
2 years ago
Read 2 more answers
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Vedmedyk [2.9K]

Answer:

the second one brotha

Step-by-step explanation:

7 0
3 years ago
Merit works in a florist shop and makes flower arrangements
Vikentia [17]
So what is the question
5 0
3 years ago
ANOTHER ONE TO TAKE A LOOK AT DOUBLE OR NOTHING
Nutka1998 [239]

Answer:

The answer is 3rd point

Step-by-step explanation:

By looking at the table :

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$15.95 (1 dot)

20-29.99,

$21.52, $25.55, $27.78, $29.90 (4 dots)

30-39.99,

$33.98, $36.77 (2 dots)

40-49.99,

$43.44 (1 dot)

50-59.99,

$51.25 (1 dot)

60-69.99,

$60.54, $64.56, $67.89 (3 dots)

Then you can determine number of dots in each range.

8 0
3 years ago
You have 20 coins in your pocket that are either quarter or dimes. They total $3.95. How many quarters do you have? A.16 B.13 C.
bekas [8.4K]

Answer:

B. 13

Step-by-step explanation:

Solve this by setting up system of equations:

0.25x + 0.10y = 3.95

x + y = 20

x equals the number of quarters and y equals the number of dimes. 0.25 is the value of a quarter and 0.10 is the value of a dime.

1. Multiply one equation to have the same coefficient as the other

0.10 · (x + y = 20) = 0.10x + 0.10y = 2

2. Subtract to find the value of one variable

 0.25x + 0.10y = 3.95

<u>- 0.10x + 0.10y = 2</u>

0.15x = 1.95

3. Solve for x by dividing both sides by 0.15

x = 13

3 0
3 years ago
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