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xz_007 [3.2K]
3 years ago
10

Help!![tex]Janet is buying a $28 necklace. The store reduces the price by 20% and then applies a $2 off coupon. How much will sh

e pay for the necklace?
Mathematics
2 answers:
Nataliya [291]3 years ago
6 0
$20.40

Hope this helps! ^_^
aleksandr82 [10.1K]3 years ago
6 0
10% of 28 is 2.8. 2.8x2 is 5.6. 5.6-28=22.4. 22.4-2= 20.4
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The sum of the angle measures of a triangle is 180°. Find the value of x. Then find the angle measures of the triangle.
MAXImum [283]

Answer:

  • x = 43
  • 43°, 51°, 86°

Step-by-step explanation:

The sum of the angles is ...

  x° + (x +8)° + 2x° = 180°

  4x +8 = 180 . . . . . . . . . . . collect terms, divide by °

  x +2 = 45 . . . . . . . . . . divide by 4

  x = 43 . . . . . . . . . . subtract 2

  x +8 = 51

  2x = 86

The angles are 43°, 51°, 86°.

7 0
2 years ago
Find the coordinates of the third vertex that completes the construction of a right triangle on the coordinate plane.
Neko [114]

Answer:

<u>(7,a) Where a ∈ R - {7}</u>

<u>OR</u>

<u>(-2,a) where a ∈ R - {-2}</u>

Step-by-step explanation:

The coordinates of the given line from the right to the left are:

(7,1) and (-2,1)

So, to make a right triangle, we need to make a right angle or by another words, we need to a make a perpendicular line to the given line (i.e: a vertical line parallel to the y-axis at one of the given points)

So, the third vertex must be on the line x=7 or x=-2

So, the coordinates of the third vertex is:

<u>(7,a) Where a ∈ R - {7}</u>

<u>OR</u>

<u>(-2,a) where a ∈ R - {-2}</u>

3 0
3 years ago
Read 2 more answers
What is <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B7%7D%20%20%3D%20%20%5Cfrac%7B4%7D%7B5%7D%20" id="TexFormula1"
frosja888 [35]

Multply both sides of the equation by 7.

\dfrac{x}{7}\cdot 7=\dfrac{4}{5}\cdot 7\\\\x=\dfrac{28}{5}=5.6

_____

When the variable is in the numerator of a proportion like this, you can solve it by multiplying by that denominator. That multiplication cancels the denominator and gives you the value of the variable.

In general, you multiply by the reciprocal of the coefficient of x. When that coefficient is 1/7, you multiply by 7/1. Of course, you know that 7/7 = 1 and that x/1 = x.

7 0
3 years ago
Kathleen, Penny, and Megan all order 12-ounce smoothies. After 5 minutes, Kathleen still has 3/4 left, Penny has 5/6 left, and M
____ [38]
Penny has the most left of her smoothie
you have to find the common denominator(number that all of the denominators are divisible into.
the common denominator is 24
convert all the fraction accordingly 
Kathleen has 9/24 smoothie
penny has 20/24 smoothie
megan has 15/24 smoothie<span />
4 0
3 years ago
0.54 can it be written as a fraction? and also dose it repeat decimal of care on repeats numbers.
Ostrovityanka [42]
0.54 = fiftyfour hundredths = 54/100 <span />
8 0
3 years ago
Read 2 more answers
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