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Rudiy27
3 years ago
7

What is the step by step and answer

Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0
Remember C = pi * d (pi = 22/7 and d is the diameter which is 8400)
Substitute 22/7 and 8400 into the equation

C = 22/7 * 8400
C = 22 * 1200
C = 26400 miles
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Mary has $10 in savings. she owes her parents $50. she does some chores and her parents pay her $12. she also gets $25 for her b
muminat
Let's start with what we know:
Mary needs at least $50 to pay back her parents
Currently, she has $10, $12, and $25 in her possession. Let's add those values together and see if they equal $50 or more:

10 + 12 + 25 
22 + 25 = $47

Since she only has $47, she needs $3 more to pay back her parents.
7 0
3 years ago
What is (-a + b) (-c + d)?​
algol [13]

Answer:

(−a+b)(−c+d)

=(−a+b)(−c+d)

=(−a)(−c)+(−a)(d)+(b)(−c)+(b)(d)

=ac−ad−bc+bd

4 0
3 years ago
Hey<br> see if u can help<br><br> Brainliest now!!!
Marianna [84]

Answer: (C) x² - 4x + 5 = 0

<u>Step-by-step explanation:</u>

   x = 2 ± i

⇒ x = 2 + i             and       x = 2 - i

⇒ x - (2 + i) = 0     and        x - (2 - i) = 0

 0 = (x - 2 - i)(x - 2 + i)

     = x(x - 2 + i)   -2(x - 2 + i)   -i(x - 2 + i)

     = x² - 2x +xi   -2x + 4 <u>- 2i</u>   -xi <u>+ 2i</u> - i²

     = x² - 4x + 4 - i²

     = x² - 4x + 4 -(-1)

     = x² - 4x + 5

***************************************************

Answer: B

Explanation:

The slope from (0, 0) to (1, 4) is a rise of 4 and a run of 1, thus, m = 4/1 = 4

5 0
3 years ago
1.<br> Write the ratio 2:6 in its simplest form.
klemol [59]

Answer:

1:3

Step-by-step explanation:

2:6 common multiple is 2 so 2:6 divide by 2 is 1:3

7 0
3 years ago
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Tony rounded each of the numbers 1210 and 1148 to the nearest hundred. Which choice correctly compares the rounded numbers
lara31 [8.8K]
1210 rounded to the nearest hundred is 1200
1148 rounded to the nearest hundred is 1100
7 0
4 years ago
Read 2 more answers
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