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Andrews [41]
3 years ago
13

Alexandra has 78 emails in her inbox. She deletes 47 emails. How many emails are left in her inbox? Draw jumps and label the num

ber line to show your thinking. —————————————78
Mathematics
1 answer:
zhenek [66]3 years ago
3 0
78-47=31
47——————————————————————————————78
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A bus travels 10km in 15 min if the speed of the bus remains the same how far would the bus travel in 3hrs?
motikmotik

Answer:

120km

Step-by-step explanation:

10km in 15 min

3hrs = 3 x 60 min = 180 min

180min divided by 15min = 12

12 x 10km = 120 km

3 0
3 years ago
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Please help me with my homework<br><br> <img src="https://tex.z-dn.net/?f=%5Cbf%7B%28x%2B9%29%5E5%7D" id="TexFormula1" title="\b
Brut [27]

Answer:

x⁵+ 45x⁴+ 810x³+ 7290x²+ 32805x +59049

Step-by-step explanation:

Greetings !

Given expression

(x + 9) {}^{5}

write 5 as a sum

(x + 9) {}^{3 + 2}

use \: a {}^{m + n}  = a {}^{m}  \times a {}^{n} to \: expand \: the \: expression.

(x + 9) {}^{3}  \times (x + 9) {}^{2}

Use (a+b)³=a³+3a²b+b³ to expand the expression

(x {}^{3}  + 27x {}^{2}  + 243x + 729) \times (x + 9) {}^{2}

Use (a+b)²=a²+2ab+b² to the second expression to expand it

(x {}^{3}  + 27x {}^{2}  + 243x + 729) \times(x {}^{2}  + 18x + 81)

Finally, simplify the expression gives

x {}^{5}  + 45x {}^{4}  + 810x {}^{3}  + 7290x {}^{2}  + 32805x + 59049

Hope it helps!

3 0
2 years ago
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MAKE SURE TO SHOW YOUR WORK (please)
creativ13 [48]

Answer:

9.11 x 10^-28

Step-by-step explanation:

if you divide 9.11 x 10^-28 by 1.67 x 10^-24 you get .000546

if you divide 1.67 x 10^-24 by 9.11 x 10^-28 you get 1,833

therefore, 1.67 x 10^-24 is 1833 times greater than the other value

8 0
3 years ago
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Millie had $450 in a savings account. She spent $171 on new luggage. What percent of Millie's money is left in her savings accou
Rudiy27

Amount left = $450 - $171 = $279


Amount left in Percentage = 279/450 x 100 = 62%


Answer: (C) 62%

4 0
3 years ago
A rotation maps point A to A’.
weeeeeb [17]

Answer:  The answer is (C) 180° rotation.

Step-by-step explanation:  Given that the point A maps to the point A' by a rotation. We are to select the statement that describes the rotation.

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Therefore, the point A is rotated through an angle of 180° to reach at the point A'.

Thus, the correct option is (C) 180° rotation.

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3 years ago
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