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3 years ago

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Mathematics

1 answer:

evablogger [386]3 years ago

4 0

1 and 5/16 pounds
Divide 7/8 with 2/3

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The cost of six electronic handheld games if each cost eight dollars

Assoli18 [71]

If each costs 8 dollars and we need to know the cost of 6

Then we can do 8 multiplied by 6 which is 48

The answer is 48.

4 0

3 years ago

Read 2 more answers

Prove that :( 1 + 1/<img src="https://tex.z-dn.net/?f=tan%5E%7B2%7DA" id="TexFormula1" title="tan^{2}A" alt="tan^{2}A" align="ab

Aliun [14]

Answer:

See explanation

Step-by-step explanation:

Simplify left and right parts separately.

$\left(1+\dfrac{1}{\tan^2A}\right)\left(1+\dfrac{1}{\cot ^2A}\right)\\ \\=\left(1+\dfrac{1}{\frac{\sin^2A}{\cos^2A}}\right)\left(1+\dfrac{1}{\frac{\cos^2A}{\sin^2A}}\right)\\ \\=\left(1+\dfrac{\cos^2A}{\sin^2A}\right)\left(1+\dfrac{\sin^2A}{\cos^2A}\right)\\ \\=\dfrac{\sin^2A+\cos^2A}{\sin^2A}\cdot \dfrac{\cos^2A+\sin^A}{\cos^2A}\\ \\=\dfrac{1}{\sin^2A}\cdot \dfrac{1}{\cos^2A}\\ \\=\dfrac{1}{\sin^2A\cos^2A}$

<u>Right part:</u>

$\dfrac{1}{\sin^2A-\sin^4A}\\ \\=\dfrac{1}{\sin^2A(1-\sin^2A)}\\ \\=\dfrac{1}{\sin^2A\cos^2A}$

Since simplified left and right parts are the same, then the equality is true.

3 0

3 years ago

The sign shows the costs associated with a whitewater rafting trip. Write an expression to determine the cost of 3 children and

vampirchik [111]

Let us assume rent for a child = $x per hour and

Rent for an adult = $ y per hour.

We are given number of children = 3.

Number of adults = 1.

Rent for 3 children at the rate $x per hour = 3*x = 3x.

Rent for 1 adult at the rate $y per hour = 1*y = y.

We are given number of hours of rafting trip = h hours.

Total cost of 3 children and 1 adult for h hours =h times (Cost of 3 children and 1 adult for each hour).

= h*(3x+y).

Therefore, h(3x+y) is the final expression for the total cost of h hours of rafting trip.

If you are given values of x, y or h, you can plug those values in this expression.

8 0

4 years ago

3. Which point lies inside the circle with equation (x - 2)2 + (y + 3)2 = 4?

timofeeve [1]

Answer:

C (2,-4)

Step-by-step explanation:

You could graph the circle and then graph the points and see...

Or you could them in and see which point makes the left hand less than 4?

So if you wanted to draw it is a circle with center (2,-3) and radius 2.

If you want to do it the other way:

Plug in time!

(2,-5)?

(2-2)^2+(-5+3)^2

0^2+(-2)^2

0+4=4 so not this one

(2,-4)?

(2-2)^2+(-4+3)^2

0+1

1<4 so this one (you can also see this in the drawing:

8 0

4 years ago

Read 2 more answers

Can you help me how to do this question.

amm1812

Answer: It should be the last one i think.

Step-by-step explanation:

8 0

3 years ago