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3 years ago

PLEASE HELP THIS IS BEING TIMED I HAVE 9 moreeeeee

Mathematics

2 answers:

Sergio [31]3 years ago

6 0

Answer:

8/10 hahahshshshdhdhdbdbd

Sholpan [36]3 years ago

5 0

Answer:

yh its 8/10

Step-by-step explanation:

DO BRAINLIEST FOR ME. IVE BEEN ANSWERING MOST UR QUESTIONS PLLZZ XD

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A circle has a radius that measures 9 centimeters what is the area of the circle to the nearest tenth use pie 3.14

Tanzania [10]

Step-by-step explanation:

Given

radius (r) = 9 cm

Area of the circle (A) 

= πr²

= 3.14 * 9²

= 3.14 * 81

= 254.34 cm²

5 0

3 years ago

What is this answer. 7/b - 3/b

musickatia [10]

Answer:

4/b

Step-by-step explanation:

7/b - 3/b

Since the denominators are the same, we can subtract

4/b

3 0

3 years ago

A circular mirror is surrounded by a square metal frame. The radius of the mirror is 5x. The side length of the metal frame is 1

Aleks04 [339]

Answer:

$-25x^{2} (\pi -9)$

Step-by-step explanation:

The area of the metal frame is equal to the area of the square minus the area of the circle.

The area of the square is the side length squared:

$(15x)^{2}$

$=225x^{2}$

The area of the circle is $\pi r^{2}$ , with $r$ being the radius:

$\pi (5x)^{2}$

$=\pi *25x^{2}$

$=25\pi x^{2}$

Now find the area of the metal frame:

$225x^{2} -25\pi x^{2}$

$25x^{2} (9-\pi )$ Factor out the GCF, $25x^{2}$

$-25x^{2} (\pi -9)$ Factor out a $-1$

5 0

3 years ago

Given the table, write and equation for the function, and describe what it does. ASAP!!!

k0ka [10]

Answer:

f(x) = 3x + 1

Step-by-step explanation:

f(x) = 3x + 1

f(1) = 3+1 = 4

f(2) = 3*2 + 1 = 7

f(3) = 3*3 + 1 = 10

f(4) = 3*4 + 1 = 13

it's a linear function with slope 3 and y intercept 1

3 0

3 years ago

HELP!!!! if you answer you get 20 points.

wolverine [178]

Answer:

Very last choice is the answer.

Step-by-step explanation:

Remark

The thing that is most important is that the horizontal line connect h and the radius is parallel to the cut of the sphere if it was placed right in the middle. That line swings around as though the center was a pivot.

Solution

So what you have is a circle when that line goes around that part of the sphere.
To find the length of that line, use the Pythagorean Theorem. Call the line r1.
r1 ^2 = r^2 - h^2
So the area is pi * r1^2
Area = pi (r^2 - h^2)
The very last one is the answer.

8 0

3 years ago