Answer:
1/10 in first row
1/20 in second row
1/5 in third row
Step-by-step explanation:
it is simple, take first row, and look what is required to get 1,
here 5*2 is 10, so to get 1 we need to divide with 10
in second row, 20*1 is 20, so we need to divide with 20
and in third row 10* ½ is 5, so we need to divide with 5
We are given ratio nickel to zinc to copper = 2:7:9.
From this ratio we can see that <em>ratio of nickel to zinc is 2:7</em>.
Let us assume number of pounds of nickel have to be used to create alloy that contains 4.9 lb of zinc is x pounds.
So, we can setup a proportion as :
x : 4.9 = 2:7
Or
On cross multiplication, we get
7x= 4.9× 2
7x = 9.8
Dividing both sides by 7, we get
x = 1.4.
<h3>Therefore, 1.4 pounds of nickel have to be used to create alloy that contains 4.9 lb of zinc.</h3><h3 />
Answer:
Step-by-step explanation:
Area of the rectangle = 33 inches sq
Area of a rectangle (formula) = l*b
let the width be x
length = 2 inches + 3x = 2+3x
Area of the rectangle = l*b = 2+3x + x
33 inches sq = 2+3x + x
33 in sq = 2+4x
33/2 = 4x
16.5/4 = x
x = 4.125
width= <u>4.125 inches</u>
length = 2+3x = 2+3(4.125) = <u>14.375</u>
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(unless your poster is 32 sq inches and you made a mistake, just replace 33 with 32 and solve it)
0.02% of 5000 = 1
1 is the answer
