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Mnenie [13.5K]
3 years ago
8

Kristal orders tacos. She left a $7 tip which was 20% of her bill.

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

30 bucks

Step-by-step explanation:

Just multiply 7 x 5

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What is the reflection in the x-axis & what’s the reflection in line y=x?
marishachu [46]

Answer:

  a) (3, -4), (2, 4), (-5, -6)

  b) (4, 3), (-4, 2), (6, -5)

Step-by-step explanation:

a) Reflection in the x-axis negates the y-coordinate:

  (x, y) ⇒ (x, -y)

  (3, 4) ⇒ (3, -4)

  (2, -4) ⇒ (2, 4)

  (-5, 6) ⇒ (-5, -6)

__

b) Reflection in the line y=x swaps the x- and y-coordinates:

  (x, y) ⇒ (y, x)

  (3, 4) ⇒ (4, 3)

  (2, -4) ⇒ (-4, 2)

  (-5, 6) ⇒ (6, -5)

8 0
3 years ago
Find the radius and diameter of circle A, if the endpoints of the radius<br> are (-2, -1) and (6,4).
AleksandrR [38]

Step-by-step explanation:

length \: between \: ( - 2, - 1) \: and \: (6,4) \\  =  \sqrt{(x _{1} - x  _{2} )² + (y _{1}  - y _{2})²  }  \\  =  \sqrt{( -  2 - 6)²+ ( - 1 - 4)²}  \\  =   \sqrt{64 + 25}  \\  =  \sqrt{100}  \\  = 10 \: units \\ radius = 10 \: units \\ diameter = 2 \times radius \\ d = 2 \times 10 \\ d = 20 \: units

8 0
2 years ago
What number is needed to complete the pattern below? 5 10 3 15 20 13 25 30 __?
djverab [1.8K]
23
because
the pattern is
(5 10) ..1.. (15 20) ..2.. (25 30) ..3..


..1... = 3
..2.. = 13
so ..3.. = 23
4 0
3 years ago
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Dafna1 [17]

Answer:

18.288

Step-by-step explanation:

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3 years ago
Which is the most effective way to obtain a random sample of your school population
Ierofanga [76]
Ask every fifth person that exits the school
(systematic random)
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3 years ago
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