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PIT_PIT [208]
3 years ago
15

What is the formula for pie

Mathematics
1 answer:
Amanda [17]3 years ago
8 0

Answer:

3.14

Step-by-step explanation:

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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
1 year ago
sheila has 5 times as many markers as dave together they have 18 markers. How many markers does shelia have
wel
Shelia has 15 markers
6 0
3 years ago
Read 2 more answers
Y/3 - 4 = -1 solve for y
Marysya12 [62]

Answer:

y=9

Step-by-step explanation:

First we need to solve al addition and subtraction by performing the inverse operation. In this case, we need to add to reverse the subtraction

y/3 -4= -1

y/3= 3

Now we solve all multiplication and division again using the inverse operation, which in this case is multiplication, because the variable is being divided.

y/3=3

y=9

Thus we get that the value for y is 9.

Hope this helped!

Btw you're very pretty! <3

5 0
3 years ago
What is 2/10ths written as a decimal
ehidna [41]
Hey there! :D

2/10s= .2

The place after the decimal is the tenth so place. That fraction represents “two tenths”.

I hope this helps!
~kaikers
7 0
3 years ago
the order pairs(1,1),(2,8),(3,27),(4,64),(5,125) represent a function what is the rule that represent
xenn [34]

if the first number is x and the second number is y

1^3 = 1

2^3 =8

3^3=27

4^3 = 64

y=x^3

f(x)=x^3

7 0
2 years ago
Read 2 more answers
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