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3 years ago

Write 11/25 and 9/20 so that they can have a common denominator.

Mathematics

2 answers:

sergejj [24]3 years ago

7 0

Multiple 11/25 with 4 and 9/20 with 5 so it will be
44/100 and 45/100

goldenfox [79]3 years ago

7 0

220/500 and 225/500. I don't know what to say. Please cooperate with me. Thank You. Just pretending that I am explaining it well. If you want me to explain it then just leave a comment.

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How to do this question plz

MrRissso [65]

Answer:

10:1

90 red counters

30 blue

1/3 of 90 =30

80% of 30 =24

90-30 =60 remaining red counters

30-24 =6 remaining blue counters

= 60:6 simplest form is 10:1

8 0

3 years ago

When dividing, round your answer to the nearest tenths place (which means you have to find the hundredths place, in order to rou

Naya [18.7K]

Answer:

Step-by-step explanation:

2.1003

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3 years ago

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Please, my whole grade depends on this question!!!

anastassius [24]

Answer:

y = 14.4x - 18.4

Step-by-step explanation:

This is the equation for the regression line, I hope this helps!

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3 years ago

How much of an alloy with 30% copper must be added to 25 pounds of a second alloy that is 20% copper to create a 27% alloy? 33.8

yuradex [85]

Answer:

58.33 lbs.

Step-by-step explanation:

There are already 25 lbs of alloy of copper

Of this 25 lbs, 20% is pure i.e. copper content = 25(0.5) = 5lbs.

Now available is

Copper Other metals

5 lbs 20 lbs

Let x lb of 30% copper is added.

Then new alloy will have 5+0.3x lb copper in total of 25+x lbs

Percentage pure = $\frac{5+0.3x}{25+x} =27%$

Simplify to get

$\frac{5+0.3x}{25+x} =\frac{27}{100} \\\\Cross multiply:\\27(25+x) =100(5+0.3x)\\500+30x =675 +27x\\3x = 175\\x = 175/3 = 58.33 lbs$

Hence answer is 58.33 lbs should be added.

8 0

3 years ago

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What is the vertex of the parabola whose equation is y = (x + 1)2 + 3?

Ilya [14]

Answer:

The answer would be -1,-3.

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4 years ago