All categories

3 years ago

Help me I need help!

Mathematics

1 answer:

Allushta [10]3 years ago

8 0

Answer:

7.D

8.A

Step-by-step explanation:

r=√((0-6)²+(0+8)²)=√(36+64)=√100=10

eq. of circle is (x-6)²+(y+8)²=10²

(x-6)²+(y+8)²=100

CM=1/2CD=1/2×60=30

OM=18

OC=√(30²+18²)=√(900+324)=√(1224)=√(4×306)=√(4×9×34)=2×3√34=6√34

radius r=OC=6√34

OF=r=6√34

ON=15

FN=√((6√34)²-15²)=√(1224-225)=√999=√(9×111)=3√111

You might be interested in

To finish a project, you need to paint the lateral surfaces of a cube with side length 2.5 inches. Find the area that you need t

valentina_108 [34]

Answer:

$25 in^2$

Step-by-step explanation:

We want to find the lateral surface area of the cube.

The lateral surface area of a cube is given as:

$A = 4a^2$

where a = length of side of the cube

Therefore, given that the length of the side of the cube is 2.5 inches, the area you need to paint is:

$A = 4 * 2.5^2\\A = 25 in^2$

6 0

3 years ago

Ellen bought 5 6/8 pounds of grapes and 2 1/8 pounds of apples. How many pounds of fruit did she buy?

saveliy_v [14]

It is the grapes + apples= 5 6/8+2 1/8 = 46/8+ 17/8= 63/8 0r 7 7/8 pount of fruit.

4 0

3 years ago

!!!!!!!!!HELP ASAP!!!!!!! WORTH 20 POINTS

Juliette [100K]

F(x)=∛x

The domain will be all real numbers.

Answer: A) all real numbers.

Ej: if x=-8 ⇒∛-8=-2

8 0

3 years ago

Solve the equation. Round to the nearest hundredth. Show work.

Burka [1]

Answer:

$x=-0.75$

Step-by-step explanation:

The given equation is

$4^{-5x-7}=6^{2x-1}$

We take logarithm of both sides to base 10.

$\log(4^{-5x-7})=\log(6^{2x-1})$

$(-5x-7)\log(4)=(2x-1)\log(6)$

We expand the brackets to get;

$-5x\log(4)-7\log(4)=2x\log(6)-\log(6)$

Group similar terms;

$-7\log(4)+\log(6)=2x\log(6)+5x\log(4)$

$-7\log(4)+\log(6)=(2\log(6)+5\log(4))x$

$\frac{-7\log(4)+\log(6)}{(2\log(6)+5\log(4))}=x$

$x=-0.752478$

To the nearest hundredth.

$x=-0.75$

3 0

3 years ago

What is the missing number ? <br> 1,8,27,64,125,216,?

Katena32 [7]

Answer:

Step-by-step explanation:

this is the sequence of cube. ... hence the sequence will be 1-8-27-64-125-216.

(wen 64 is already tere)

3 0

2 years ago