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3 years ago

How do i find the answer to this

Mathematics

1 answer:

dybincka [34]3 years ago

5 0

If you “unfold” the wrapping paper around this triangular prism, you have
2 triangles
Base 40, to find the height(dotted perpendicular line segment)
a^2 + b^2 = c^2. ... 20^2+ b^2 = 29^2 … 400+ b^2 = 841
- 400. -400
b^2 = 441 … b=21 this is height
1/2(40)(21) = 420 + 420

3 rectangles
Two are 70x29 = 2030 +2030
One is 70x40 = 2800

Add all 5 numbers:
420
420
2030
2030
+ 2800
7700

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Write the ratio as a fraction in the simplest form.<br><br> The ratio of 96 cent to 20 cents is

boyakko [2]

96:20 = 24:5

24/5 = 4.8/ 1 = 4.8:1

Have a gr8 day ahead ✌️

6 0

3 years ago

Read 2 more answers

Harry is trying to solve the equation y = 2x2 − x − 6 using the quadratic formula. He has made an error in one of the steps belo

professor190 [17]

Answer:

Step 2

Step-by-step explanation:

The quadratic formula is given by $x=-b+-\frac{\sqrt{b^{2}-4ac } }{2a}$

Our equation is y = 2x²-x-6

So here our a = 2, b = -1, and c = -6

We can now plug these numbers into our formula

$x= -(-1) +-\frac{\sqrt{(-1)^{2}-4(2)(-6) } }{2(2)} = 1 +-\frac{\sqrt{1+24} }{4} = 1+-\frac{\sqrt{25} }{4}$

Step 2 is incorrect because it states that "x equals the negative of negative 1 plus or minus the square root of negative one plus forty-eight all over two times 2."

The correct statement would be "x equals the negative of negative 1 plus or minus the square root of positive one plus forty-eight all over two times 2.", because the square of a negative is positive, resulting in a positive one.

Since this step is incorrect, the steps after are also incorrect, but Harry went wrong at Step 2

4 0

3 years ago

A circle has a sector with area 27pie and central angle of 120

Nat2105 [25]

Answer:

Step-by-step explanation:

27π=120°/360°*πr^2

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7 0

3 years ago

35% of a number is what fraction of that number?

shepuryov [24]

35% of a number (say, x) is 35% * x.

35% can be written as a fraction, too. % means /100, so 35% is 35/100 which simplifies to 7/20.

So, 35% * x = 7/20 * x

8 0

4 years ago

A right triangle has base x meters and height h meters, where h is constant and x changes with respect to time t, measured in se

aksik [14]

The relationship between dθ/dt, the rate of change of θ with respect to time, and dx/dt, the rate of change of x with respect to time is $\frac{d\theta}{dt} = \frac{h}{x\sqrt{x^2+y^2} }\frac{dx}{dt}$

Given the following parameters:

Adjacent side = x

Opposite side = h

The angle of elevation = θ

According to SOH CAH TOA identity;

$tan \theta =\frac{Opposite}{Adjacent}$

Substitute the given values into the formula

$tan \theta =\frac{h}{x}$

$\theta= tan^{-1}\frac{h}{x}$

Differentiate with respect to x

$\frac{d \theta}{dx} = \frac{h}{x\sqrt{x^2+y^2} }$

According to the chain rule,

$\frac{d\theta}{dt} =\frac{d\theta}{dx} \times \frac{dx}{dt}\\\frac{d\theta}{dt} = \frac{h}{x\sqrt{x^2+y^2} }\frac{dx}{dt}$

Hence the relationship between dθ/dt, the rate of change of θ with respect to time, and dx/dt, the rate of change of x with respect to time is $\frac{d\theta}{dt} = \frac{h}{x\sqrt{x^2+y^2} }\frac{dx}{dt}$

Learn more on the rate of change here: brainly.com/question/11883878

8 0

2 years ago

How do i find the answer to this ​

How do i find the answer to this