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2 years ago

7

Can somebody explain area to me

2 answers:

Illusion [34]2 years ago

5 0

Area is how many unit squares can fit in a figure. For example, if you imagine a grid with many squares, one square would be 1 square unit. Two squares would be 2 square units. If you have a rectangle with 27 squares that would be 27 square units.
But it would be really hard and time-consuming to count all 27 of those squares. So you can use a formula. Length * width = area
Length of 9 times width of 3 = 27 square units.

Now different shapes/figures have different formulas for area. In a triangle, the formula is (1/2)*base*height, or (base*height)/2. This is because a triangle is half of a rectangle, so you multiply the base and height and divide all that by 2.

jeka942 years ago

3 0

To find width it would have to be Length x Width=Area

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NEED HELP What is 1.43 x 10^5

Ksenya-84 [330]

Answer:

14,300

Step-by-step explanation:

move the decimal 5 places to the right.

1.43 x 10^5= 14,300

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3 years ago

Read 2 more answers

Convert the equation to slope-intercept form: 2y = x + 8

nalin [4]

Answer:

y=(1/2)x+4

Step-by-step explanation:

Since slope-intercept form is y=mx+b, all we need to do is divide both sides by 2:

2y=x+8

y=1/2x+4

Thus, the equation would be y=1/2x+4

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2 years ago

What can be measured in nanometers?

Art [367]

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2 years ago

Suppose that the derivable functions x=x(t) and y=y(t) satisfy xcosy=2.

ololo11 [35]

Applying implicit differentiation, it is found that dy/dt when y=π/4 is of:

a-) -√2 / 2.

<h3>What is implicit differentiation?</h3>

Implicit differentiation is when we find the derivative of a function relative to a variable that is not in the definition of the function.

In this problem, the function is:

xcos(y) = 2.

The derivative is relative to t, applying the product rule, as follows:

$\cos{y}\frac{dx}{dt} - x\sin{y}\frac{dy}{dt} = 0$

$\frac{dy}{dt} = \frac{\cos{y}\frac{dx}{dt}}{x\sin{y}}$

Since dx/dt=−2, we have that:

$\frac{dy}{dt} = -2\frac{\cos{y}}{x\sin{y}}$

When y = π/4, x is given by:

xcos(y) = 2.

$x = \frac{2}{\cos{\frac{\pi}{4}}} = \frac{2}{\frac{\sqrt{2}}{2}} = \frac{4}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = 2\sqrt{2}$

Hence:

$\frac{dy}{dt} = -2\frac{\cos{y}}{x\sin{y}}$

$\frac{dy}{dt} = -\frac{1}{\sqrt{2}}\cot{y}$

Since cot(pi/4) = 1, we have that:

$\frac{dy}{dt} = -\frac{1}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = -\frac{\sqrt{2}}{2}$

Which means that option a is correct.

More can be learned about implicit differentiation at brainly.com/question/25608353

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1 year ago

Erica solved the equation -5x - 25 = 78; her work is shown below. Identify the error and were it was made

Nata [24]

Answer:

A

Step-by-step explanation:

It's A because she subtracted a negative and that only make a bigger negative where she should have added

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2 years ago