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Tems11 [23]
2 years ago
11

Can a chord be a diameter?

Mathematics
1 answer:
Maksim231197 [3]2 years ago
8 0

Answer:

no it cannot

Step-by-step explanation:

becuase of many reasons

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A company is designing a new logo that is comprised of four identical sectors of circles that have central angles
Lyrx [107]
<h3>Answer:  59.7 square inches</h3>

============================================================

Explanation:

The radius of the larger circle is CB = CA+AB = 8+3 = 11 inches.

The area of the larger circle with this radius is...

A = pi*r^2

A = pi*11^2

A = 121pi

The area of the smaller circle (radius CA = 8 inches) is

A = pi*r^2

A = pi*8^2

A = 64pi

The difference is 121pi-64pi = 57pi

This represents the exact area of the full ring. Refer to figure 1 below. Specifically the red region of that figure.

However, we don't want the full ring. We only want a small fraction of it (as figure 2 shows, which is the original diagram your teacher gave you). Specifically, we want (4*30)/360 = 120/360 = 1/3 of the full ring. The 4*30 refers to the idea we have four copies of the 30 degree angle.

So we'll take 1/3 of the 57pi to get (1/3)*57pi = (57/3)pi = 19pi

-----------------------------------

The value 19pi is the exact area of the entire shaded region.

From here, you can use a calculator to determine that

19pi = 19*3.1415926535898 = 59.6902604182061 which rounds to 59.7

If your teacher insists you use pi = 3.14, then 19*pi = 19*3.14 = 59.66 which also rounds to 59.7

8 0
3 years ago
A lotion is made from an oil blend costing $1.50 per ounce and glycerin costing $1.00 per ounce. Four ounces of lotion costs $5.
kiruha [24]
What is the question??
4 0
3 years ago
There are one hundred forty-two students in a high
MakcuM [25]

Answer:

639 students attend the highschool

Step-by-step explanation:

<em>Find one-ninth of the students</em>

<em>Since 142 students is two-ninths of students, we would divide</em>

1) 142/2=71

<em>71 students is only one ninth of the students, we need to find 9/9 of students</em>

2) 71*9 = 639

639 students attend school

6 0
3 years ago
NEED HELP ASAP
gregori [183]

Step-by-step explanation:

10/12=x/20

10×20=12x

200=12x

x=200/12

x=17

8 0
3 years ago
Five times a number minus - 11 is equal to 16 minus the number
Kruka [31]

I'm probably late but I'm going to solve it anyway.

Let n = "a number." We will use it to translate the words into an equation.

"five times a number" translates to 5 * n or 5(n) or 5n. I will use the last one.

"minus - 11" is - (- 11)

"16 minus the number" is 16 - n

Now set everything in place and solve:

5n - (- 11) = 16 - n

First, simplify. The two negatives right next to each other, - (- 11) is like multiplying by a negative. A negative times a negative is a positive.

5n + 11 = 16 - n

Now, subtract 11 from both sides and add n to both sides to get constants on one side of the equal sign and variables on the other:

5n + n = 16 - 11

Combine like terms:

6n = 5

Divide by 6 on both sides to isolate the variable:

n = 5/6

Your number is 5/6

7 0
3 years ago
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