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3 years ago

Written math response, please help thanks !

Mathematics

1 answer:

LekaFEV [45]3 years ago

7 0

Ezpeezee:

Since we know the two angle measures equals 145...

(4x+5)+(6x-10)=145

Combine like terms and you get...

10x-5=145

Solve for x...

Add 5 on both sides and you get 150. Then divide by 10 and you get 15.

However, we arent finished yet... We still need to find XMN. The equation for m<XMN= 6x-10. PLUG 15 IN FOR X...

90-10

and that simplifies to 80 degrees.

Any questions?

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In ancient egypt, a scribe equated the area of a circle with a diameter of 9 units to the area of a square with a side length of

Rudik [331]

Answer:

$\pi =3.160494$

Step-by-step explanation:

step 1

Find the area of the circle with a diameter of 9 units

we know that

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=9/2=4.5\ units$ ----> the radius is half the diameter

substitute

$A=\pi (4.5)^{2}$

$A=20.25\pi\ units^2$

step 2

Find the area of a square with a side length of 8 units

we know that

The area of the square is

$A=b^2$

where

b is the length side of the square

we have

$b=8\ units$

substitute

$A=(8)^2=64\ units^2$

step 3

Equate the areas

$20.25\pi=64$

solve for $\pi$

$\pi =\frac{64}{20.25}=3.160494$

5 0

3 years ago

What is the radius of a sphere with a surface area of 100TCm ?

tensa zangetsu [6.8K]

The radius is 5cm

Step-by-step explanation:

The surface area of a sphere is given by:

$SA = 4\pi r^2$

Here

Given

SA = 100π cm^2

Putting the values in the formula

$100\pi = 4\pi r^2\\r^2 = \frac{100\pi}{4\pi}\\r^2 = 25$

Taking square root on both sides

$\sqrt{r^2} = \sqrt{25}\\r = 5 cm$

The radius is 5cm

Keywords: Surface area, Radius

Learn more about surface area of sphere at:

#LearnwithBrainly

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Solve x2 – 4x – 9 = 29 for x.

Irina-Kira [14]

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$x= \frac{-(-4) \pm 
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2\sqrt{42} }{2} \\ 
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