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IrinaVladis [17]
3 years ago
6

41. Tavon has a $50 gift card that loses $2 for each

Mathematics
2 answers:
Anton [14]3 years ago
8 0

Answer:

Let the  number of 30 day period be = p

Part A:

50-2p=40-1.5p

=> 50-40=2p-1.5p

=> 10=0.5p

p = 20

So, there will be 20 30-day periods until the cards will be equal in value.

Part B:

Value of each card will be :

50-2p=40-1.5p

=> 50-2(20)=40-1.5(20)

=> 50-40=40-30

=> 10 = 10

The answer is $10.

DENIUS [597]3 years ago
3 0

Answer:

Step-by-step explanation:

d=days not used

50-2d  =  40-1.5d

subract 40 each side

10-2d =1.5d

10= 0.5d

20=d

After 20 days the value of the gift  cards will be equal.

20*2=40      50-40=10 ($10)

20*1.5=30     40-30=10 ($10)

each card will have a value of $10  after 20 days,when both cards have equal value

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Westkost [7]
You need two sides so you can rewrite it as:
2x = 70-(14+32)
2x = 24
x = 24/2
x = 12

The height is 12in.

Hope this helps! :)
7 0
2 years ago
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
gregori [183]

Answer:

-89 +4i sqrt (3)

Step-by-step explanation:

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We know that sqrt(-1) = ±i

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4 0
3 years ago
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Explain whether the points (-13,4), (-7,3), (-1,2), (5,1). (11,0), (17, -1) represent the set of all the solutions for the
Nataly [62]

Answer:

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Step-by-step explanation:

6 0
3 years ago
2x+3y=1 and y=-2 - 9 solve using linear combination method. Please explain steps.
kaheart [24]

Answer:

x=17

Step-by-step explanation:

2x+3y=1

y=-2-9

  • In order to combine these two equations, an idea you need to keep in mind is finding a way of setting these equations as equal to each other. I saw that each equation shared a common value, y. In this case, we need to isolate y in the first equation so that both equations =y.

2x+3y=1

3y=-2x+1

\frac{3y}{3}=\frac{-2x+1}{3}

y=-\frac{2}{3}x+\frac{1}{3}

  • With this, we now know that both -2-9 and -\frac{2}{3}x+\frac{1}{3} are equal to y, so we can set them equal to each other.

y=-\frac{2}{3}x+\frac{1}{3}

y=-11

-\frac{2}{3}x+\frac{1}{3}=-11

  • Reply to this if anything I'm saying or doing is confusing in any way, or if you find a mistake. :) Solve for x.

-\frac{2}{3}x+\frac{1}{3}=-11

-\frac{2}{3}x=-11-\frac{1}{3}

-\frac{2}{3}x =-\frac{33}{3}-\frac{1}{3}

-\frac{2}{3}x =-\frac{34}{3}

-\frac{2}{3}x(-\frac{3}{2})=-\frac{34}{3}(-\frac{3}{2})

x=\frac{102}{6}=17

x=17

  • Hopefully this answer is correct AND makes sense in terms of how I achieved it. Again, reply to this with any questions or mistakes I made and I'll do my best to answer or fix them.

 

4 0
3 years ago
6. A prism has bases that are equilateral triangles with sides lengths of 10 inches and a length of 30 inches.
vova2212 [387]

Answer:

The volume of the prism is 1,299\ in^{3}

Step-by-step explanation:

we know that

The volume of the prism is equal to

V=BL

where

B is the area of the triangular base

L is the length of the prism

we have

L=30\ in

<em>Find the area of the base B</em>

The area of a equilateral triangle is equal to

B=\frac{1}{2}(10)^{2} sin(60\°)

B=25\sqrt{3}\ in^{2}

substitute

V=(25\sqrt{3})(30)=1,299\ in^{3}

4 0
3 years ago
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