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Aliun [14]
3 years ago
12

Two time the sum of x plus 3 is 6 more than than two times x

Mathematics
1 answer:
IgorLugansk [536]3 years ago
5 0

Answer:

2(x+3)=2x+6

2x+6=2x+6

Step-by-step explanation:

2(x+3)=2x+6

2x+6=2x+6

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A 15 ounce alloy containing 30% gold was mixed with an alloy containing 5% gold to get an alloy containing 20% gold. How many ou
Studentka2010 [4]

Answer:

4.5 % alloy

Step-by-step explanation:

Let x = amt of 30% alloy

The resulting total is to be 25 oz, therefore:

(25-x) = amt of 5% alloy:

A typical mixture equation:

.30x + .05(25-x) = .20(25)

.30x + 1.25 - .05x = 5 .30x - .05x = 5 - 1.25

.25x = 3.75

x = 3.75%2F.25

x = 15 oz of 30% alloy required

then

25-15 = 10 oz of 5% alloy:

Check solution

.30(15) + .05(10) = .20(25)

4.5 + .5 = 5

4 0
3 years ago
An angle measures 14° less than the measure of its complementary angle. What is the measure of each angle?
zmey [24]
(180-14):2= 166:2= 83° (smaller angle)
(180-14):2+14= 166:2+14= 83+14= 97° (bigger angle)
3 0
3 years ago
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Which shows the numbers Nine-tenths, 0.3, 0.8, Five-tenths, and Two-tenths in order from least to greatest?
nevsk [136]

Answer:

Step-by-step explanation:

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7 0
3 years ago
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Hey guys!! Kon'nichiwa!!
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Answer:

1. 1.79

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( 이게 옳은 거니?)

(;ŏ﹏ŏ)

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How many elements must a set have if the number of proper subsets of the set is one half of the total number of subsets of the​
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The set  X = { x , {x} }  would, I think,  fit the Bill
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