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navik [9.2K]
3 years ago
5

Khianna went shopping for her outfit for a dance at the school. She planned to buy shoes, jewelry, nail polish, makeup, and a dr

ess at the mall. At one store she bought nail polish for $4.79 and makeup for $21.45. At another store she bought shoes for $26.43. At a third store she bought her dress for $168.27. She calculated that she spent $389.21. Is this reasonable? Why or why not?
Mathematics
1 answer:
crimeas [40]3 years ago
4 0
Yes, by the time you add up all estimations, you must add taxes.
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3. There are 124 acorns laying on the ground in your yard, it is predicted that the number of acorns will
Gennadij [26K]

Answer:

507,409

Step-by-step explanation:

if every 5 days the number quadruples (x4), and we want to know how many acorns fall after 30 days, we can divide 30 by 5 so we only have to calculate for the amount of time the take to quadruple.

30 ÷ 5 = 6

so we only have to quadruple the acorns 6 times.

if we start off with 124 acorns, this is what it will look like:

Day 0: 124 acorns

Day 5: 124 x 4 = 496 acorns

Day 10: 496 x 4 = 1984 acorns

Day 15: 1984 x 4 = 7936 acorns

etc... until day 30.

Day 30: 507904 acorns

I hope this was helpful :-)

5 0
3 years ago
Can anyone help me please
Nesterboy [21]
I apologize, but we would need the chart included below the questions to be able to answer this.
5 0
3 years ago
What number is halfway between .2 and .3
Ghella [55]

Answer:

.201

Step-by-step explanation:

3 0
3 years ago
A triangle with 7,?, and form a right triangle.
Vlad1618 [11]

9514 1404 393

Answer:

  C  24

  D  25

Step-by-step explanation:

Consider the choices offered:

  5 and 7 will not form a triangle* with any of the other lengths

  7 and 12 will not form a triangle with any of the other (longer) lengths

  7 and 24 will form a triangle with the other possibilities, 25 and 29. (needs further consideration)

  7 and 25 will not form a right triangle with 29, because a right triangle cannot have 3 odd-length sides.

__

<em>Further consideration</em>

  7^2 +24^2 = 49 +576 = 625 = 25^2 . . . . checking Pythagorean theorem

The side measures 7, 24, 25 will form a right triangle.

_____

* A triangle can be formed from three segments only if the sum of the shortest two exceeds the length of the longest one.

6 0
3 years ago
Write this mixed number 6 4/7 as an improper faction in simplest form
dangina [55]
It is 46/7     you could multiply 6x7 and then add 4 =   46/7
3 0
3 years ago
Read 2 more answers
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