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2 years ago

There are 20 runners in a race for 1st, 2nd, 3rd, and 4th place. How many different arrangements can be made?

Mathematics

1 answer:

Setler [38]2 years ago

3 0

Answer: 160

Step-by-step explanation:

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Kristen was asked to write each of the numbers in the expression 80,000 x 25 using exponents. Her response was (8 x 10 to the po

Gnom [1K]

Kriste respone is wrong

Solution:

Given that,

Kristen was asked to write each of the numbers in the expression 80,000 x 25 using exponents

Her response was (8 x 10 to the power of 3) x 5 to the power of 2

No, the response of Kristen is wrong

Let us first understand about exponents

An exponent refers to the number of times a number is multiplied by itself

Given expression is:

$80000 \times 25$

Here, 80000 has 4 zeros

Therefore, it can be raised as 10 power 4

$80000 = 8 \times 10^4$

Thus the expression becomes:

$80000 \times 25 = 8 \times 10^4 \times 25$

Also, 25 can be written as 5 power 2

$80000 \times 25 = 8 \times 10^4 \times 5^2$

Thus given expression is written as (8 x 10 to the power 4) x 5 power to the power 2

Thus Kristen respone is wrong, because he has raised 10 to power 3

6 0

3 years ago

What is the product of 7/16 and -6/13 I will make you the brainlest

mr_godi [17]

Answer:

$\frac{7}{16} *\frac{-6}{13} = \frac{-42}{208}$

Step-by-step explanation:

$\frac{7}{16} *\frac{-6}{13} = \frac{-42}{208}$ . First multiply 7*-6=-42.

Then do 16*13=208.

Simplify by dividing both by 2.

You get $\frac{-42}{208}=\frac{-21}{104}$ .

Your final simplified answer is $\frac{-21}{104}$

I hope this helps!

5 0

3 years ago

The temperature of a city during a week was 35°C, 34°C, 36°C, 38°C, 40°C, 39°C and 44°C. What was the average daily temperature

Dovator [93]

38°C
average=sum/number
=266/7 = 38

4 0

3 years ago

10(a-2.5+0.56b) is this equivalent to 10a - 25+56b

kirill115 [55]

Hey there!

10(a - 2.5 + 0.56b)

= 10(a) + 10(-2.5) + 10(0.56b)

= 10a - 25 + 5.6b

= 10a + 5.6b - 25

Therefore, your answer is: 10a + 5.6b - 25

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

3 0

3 years ago

(P+a)(V+b)=c,

UNO [17]

Answer:

PUSHIN

Step-by-step explanation:

6 0

2 years ago

There are 20 runners in a race for 1st, 2nd, 3rd, and 4th place. How many different arrangements can be made?​

There are 20 runners in a race for 1st, 2nd, 3rd, and 4th place. How many different arrangements can be made?