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lions [1.4K]
3 years ago
15

90 km is 8% of what distance

Mathematics
1 answer:
sergejj [24]3 years ago
4 0
1,125 km is the distance
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Answer ASAP 20 points for it<br><br> Type the correct expression for The product of 4 and a number t
fenix001 [56]

Answer:

4t is the expression

Step-by-step explanation:

4×t

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2 years ago
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What is the slope of line of 19,-16 and -7,-15
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Slope formula: y2-y1/x2-x1

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What is the midpoint between (-4 - 2i) and ( 6 + 8i) on the complex plane?
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2 years ago
A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 9% vinegar, and the second brand co
kobusy [5.1K]
So, the first brand has 9% vinegar, and say we use "x" amount of it, then, the amount of vinegar in "x" is 9% of x, or (9/100) * x, 0.09x.

the second brand has 14% of vinegar, and if we use say "y" amount of it, then the amount of vinegar in "y" is really just 14% of "y" or, (14/100) * y, 0.14y.

\bf \begin{array}{lccclll}&#10;&\stackrel{mL}{amount}&\stackrel{\%}{concentration}&\stackrel{amount}{concentration}\\&#10;&------&------&------\\&#10;\textit{first brand}&x&0.09&0.09x\\&#10;\textit{second brand}&y&0.14&0.14y\\&#10;------&------&------&------\\&#10;mixture&230&0.13&29.9&#10;\end{array}

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and we also know that their concentration amounts will also add up,  0.09x + 0.14y = 29.9.

\bf \begin{cases}&#10;x+y=230\implies \boxed{y}=230-x\\&#10;0.09x+0.14y=29.9\\&#10;----------\\&#10;0.09x+0.14\left(\boxed{230-x}  \right)=29.9&#10;\end{cases}&#10;\\\\\\&#10;0.09x+32.2-0.14x=29.9\implies -0.05x=-2.3\implies x=\cfrac{-2.3}{-0.05}&#10;\\\\\\&#10;x=46

how many milliliters will it be for the second brand?  well, y = 230 - x.
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The Blue Lake Water Company has two departments, Purifying and Bottling. The Bottling Department received 76,000 liters from the
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It is 71,000. :) ...........

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3 years ago
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