2 years ago

I really need help on this been trying for ages

Mathematics

1 answer:

Volgvan2 years ago

7 0

Answer:

cos F = adjacent/hypotenuse

= 15/28

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Richard and teo have a combined age of 42. Richard is 9 years older that twice teos age. How old are Richard and Teo

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Step-by-step explanation:

Richard and teo age is 51 years old

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3 years ago

The sum of the areas of two circles is 80 pie square meters. Find the length of a radius of each circle if one of them is twice

Svetach [21]

Answer:

The radius of the circles are $4\ m$ and $8\ m$

Step-by-step explanation:

Let

x-----> the radius of larger circle

y----> the radius of smaller circle

we know that

$\pi x^{2} +\pi y^{2}=80\pi$

$x^{2} +y^{2}=80$ -----> equation A

Remember that

$x=2y$ -----> equation B

substitute equation B in equation A and solve for y

$(2y)^{2} +y^{2}=80$

$4y^{2} +y^{2}=80$

$5y^{2}=80$

$y^{2}=16$

$y=4\ m$

Find the value of x

$x=2y$

$x=2(4)=8\ m$

therefore

The radius of the circles are $4\ m$ and $8\ m$

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3 years ago

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klasskru [66]

Answer: i think it is 680 or 340, but my gut says 680...

Step-by-step explanation: 4 x 10 = 40 x 17 = 680

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3 years ago

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How do you answer this and please show work if you solve?

nikklg [1K]

To solve this, simply switch the X and y variables within one equation, and upon doing so, see and check if it equals to the other equation.

f(X) = -X + 4/5
Y = -X + 4/5
X = (-Y+4)/5
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-Y = 5X - 4
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Yes, by looking at the second equation it is an inverse of the first one.

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3 years ago

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Sati [7]

Answer:

Rectangle C is not similar to the other 2

Step-by-step explanation:

3*2=6

1*2=2

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3 years ago

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