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3 years ago

1 = w/10 what is up plz help

Mathematics

1 answer:

bearhunter [10]3 years ago

6 0

Answer:

I think it would be W=1

Step-by-step explanation:

Hope this helps :-)

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there is a rectangle abcd.the length of the rectangle is increased by 10%.the width of the rectangle is increased by 5%,what is

lesya [120]

Answer:

Therefore the area of rectangle is increased by 15.5%.

Step-by-step explanation:

Assume the length and width of the rectangle be x and y respectively.

The area of the rectangle is = length×width

=xy.

Now the length of the rectangle is increased by 10%.

Then the length of the rectangle increased = $x\times \frac{10}{100}$ .

New length of the rectangle is $=x+\frac{10x}{100}$

$=\frac{100x+10x}{100}$

$=\frac{110x}{100}$

The width of the rectangle is increased by 5%.

Then the width of the rectangle increased = $y\times \frac{5}{100}$ .

New length of the rectangle is $=y+\frac{5y}{100}$

$=\frac{100y+5y}{100}$

$=\frac{105y}{100}$

New area of the rectangle is = $\frac{110x}{100}\times\frac{105y}{100}$

= 1.155 xy.

The percentage of area increase is

$=\frac{\textrm{New area - Original area}}{\textrm{Original area}}\times 100$

$=\frac{1.155xy-xy}{xy}\times 100$

$=\frac{0.155xy}{xy}\times 100$

=15.5.

Therefore the area of rectangle is increased by 15.5%.

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3 years ago

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Which of the following statements represents one of the differences between an experiment and an observational study?

svet-max [94.6K]

Answer:

Introducing a change to the subgroup

Step-by-step explanation:

Given there are four statements. We have to find the one which represents one of the differences between an experiment and an observational study.

The answer is option 2. Introducing a change to the subgroup

Experimental and observational studies are both types of studies between which a number of differences can be identified. When conducting research studies, various types of research in order to arrive are adopted according to the need.

An experimental study is a study where the researcher has control over most of the variables.

On the other hand, an observation study is a study where the researcher cannot control any variable but merely observes the subject without controlling any variables.

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Brilliant_brown [7]

x = -25.5

Happy To Help ;)

Step-by-step explanation:

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