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Paha777 [63]
3 years ago
15

Sophie had two different coupons for the book store, 15% off coupon or the $2.50 off coupon. The store only allows you to use on

e coupon at time. The book she wanted was $12. Which is a better coupon for sophie to use and why
Mathematics
1 answer:
vivado [14]3 years ago
3 0

Answer:

$2.50 coupon is better as it gives a cheaper sale price.

Step-by-step explanation:

Price of good = $12

Sale price = price of good - coupon

Coupon 1 :

$2.50

Sale price = $12 - $2.50 = 9.50

Coupon 2:

15% off

Sale price =. (100 - 15)% * 12

= 0.85 * 12

= $10.2

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A jeweler wants to combine a 60% gold alloy with a 20% gold alloy to make 1000 grams of 50% gold alloy. How many grams of 60% al
kramer

Answer:

750 grams of 60% alloy

Step-by-step explanation:

Define x = amount of 60% alloy and y = amount of 20% alloy

Equating the amounts of gold:

0.6x+0.2y = 1000(0.5)

Since there must be 1000 grams total:

x+y = 1000

Writing the 2 resulting equations together:

0.6x + 0.2y = 500

x + y = 1000

Multiply the first equation by 5:

3x + y = 2500

x + y = 1000

Subtracting the 2nd equation from the 1st:

2x = 1500

x = 750

Answer: 750 grams of 60% alloy

7 0
2 years ago
Write an essay about your learning on how you solve problems involving integers. (5 points). Take a photo of your answer. (To th
olga55 [171]

Answer:

to use integers for certain problems and equation on math, i can also use it for future use in life in case i need it, Its very helpful to learn since it isnt that complicated nor hard, its just a good skill to keep in mind as a student.

4 0
3 years ago
वह
Kipish [7]

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162

Step-by-step explanation:

step by step explanation

4 0
3 years ago
Find the measure of angle y. Round your answer to the nearest hundreth.
VikaD [51]
Check the picture below.

8 0
4 years ago
The value of x is ?
Lelechka [254]

Answer:

None of the choices are correct.

Step-by-step explanation:

Considering this a right triangle, we may use the law of sines or "sohcahtoa" to find the length of x.

cos(45) = x/100\sqrt{2}

which equates to about x = 74.29174812021

7 0
3 years ago
Read 2 more answers
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