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3 years ago

-Quiz- Which equation represents a circle with a center at (-4, 9) and a diameter of 10 units?

Mathematics

1 answer:

vodka [1.7K]3 years ago

7 0

Answer:

(x - 9)2 Step-by-step explanation:

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Asphere has a radius of 27 inches. A horizontal plane passes through the center of the sphere.

Westkost [7]

9514 1404 393

Answer:

circle of radius 27 inches

Step-by-step explanation:

Anywhere a plane cuts a sphere, the cross section is a circle. When the plane includes the center of the sphere, the circle has the same radius the sphere has.

The cross section is a circle of radius 27 inches.

7 0

3 years ago

Help me :( please help me

Katena32 [7]

Answer:

22.84, 5.83

Step-by-step explanation:

Pythagoras theorem states that: a^2+b^2=c^2

So, for red triangle, it will be: 9^2+21^2=b^2

81+441=b^2

522=b^2

square root of 522=b

22.84=b

For purple one,

3^2+5^2=a^2

9+25=a^2

34=a^2

square root of 34=a

5.83=a

7 0

2 years ago

4x-11y=68 ; 6x+5y=-27 by elimination

zimovet [89]

Answer:

$x=\frac{1}{2}\\\\y=-6$

Step-by-step explanation:

Given the following system of equations:

$\left \{ {{4x-11y=68} \atop {6x+5y=-27}} \right.$

In order to solve the system of equations using the Elimination Method, you can follow these steps:

- Multiply the first equation by -6 and the secondd equation by 4.

- Add both equations.

- Solve for "y".

Then:

$\left \{ {{-24x+66y=-408} \atop {24x+20y=-108}} \right\\.........................\\86y=300\\\\y=\frac{-516}{86}\\\\y=-6$

- Substitute the value of "y" into one of the original equations and solve for "x":

$6x+5(-6)=-27\\\\6x=-27+30\\\\x=\frac{3}{6}\\\\x=\frac{1}{2}$

4 0

3 years ago

What is the range of the function f(x) = -4|x + 1| − 5?

lukranit [14]

Answer:

answer is A

Step-by-step explanation:

hope that helps

5 0

3 years ago

Read 2 more answers

Fill in the blanks.<br> (3b^3)^2 = _b^_

Radda [10]

We can seperate (3b³) into two different parts, the constant and the variable.

The constant (3) and the variable (b) can both be squared and multiplied to get the correct answer, so:

3² = 9

(b³)² = $b^{6}$

So, $(3b^{3})^{2} = 9b^{6}$

6 0

3 years ago