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2 years ago

I need help on this test. Will give Brainliest to whoever answers first! Pt. 7

Mathematics

1 answer:

Gre4nikov [31]2 years ago

6 0

I think the first question is A)

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What is the area of the sector having a radius of 8 and a central angle of 5pi/3 radians?

Naya [18.7K]

Answer:

160π/3 units² ≈ 167.55 units²

Step-by-step explanation:

The appropriate area formula is ...

A = (1/2)r²θ

Filling in the numbers, you have ...

A = (1/2)(8²)(5π/3) = 160π/3 ≈ 167.55 . . . . square units

8 0

2 years ago

Excited about the success of celebrity stamps, post office officials were rumored to have put forth a plan to institute two new

SVETLANKA909090 [29]

Answer:

E=2.8 m-40

Step-by-step explanation:

We konw that 30°E=25°M and 310°E=125°M

so if we want to write an ecuation that linearly relates E with M, we can use the formula of the line that crosses two points:

Y-y1= (y2-y1)/(x2-x1)*(X-x1)

In thts case:

y1= E1= 30
y2= E2=310
x1= M1= 25
x2=M2=125

E-E1= (E2-E1)/(M2-M1)* (M-M1)

E-30 = (310-30)/(125-25)*(M-25)

E-30 =280/100 *(M-25)

E-30 =2.8 M- 280*25/100

E-30 =2.8 M-70

E= 2.8 M-70+30

E=2.8 M-40

Good luck!

8 0

2 years ago

The volume of a right circular cone that has a height of 13 m and a base with a diameter of 3.4 m. Round your answer to the near

Mamont248 [21]

Answer:

The volume of right circular cone having height = $13 \ m$ and Diameter = $3.4 \ m$ is $39.4\ cubic\ meter$ .

Step-by-step explanation:

Diagram of the given scenario is shown below.

Given that

Height of a right circular cone is $13 \ m$ .

Diameter of the right circular cone is $3.4 \ m$ .

To find: The volume of a right circular cone.

So, From the question,

$Height = \ 13 \ m\\diameter = 3.4\ m$

$Radius = \frac{diameter}{2}= \frac{3.4}{2}$

⇒ $Radius = 1.7\ m$

Now

Volume of right circular cone = $\frac{1}{3}\pi r^{2}h$

$=\frac{1}{3}\times\frac{22}{7} \times (1.7)^{2}\times 13$

= $\frac{826.54}{21}$

$= 39.4\ cubic\ meter$ .

Therefore,

The volume of right circular cone having height = $13 \ m$ and Diameter = $3.4 \ m$ is $39.4\ cubic\ meter$ .

8 0

2 years ago

If a spinner is spun 5 times then each event is independent <br><br> True or false?

steposvetlana [31]

Answer:

True

Step-by-step explanation:

Each time a spinner is spun, there is an equal chance that each result will occur, thus each of these spins are independent.

8 0

2 years ago

Read 2 more answers

Use reasoning algebra to write the unknown factor

NARA [144]

I dont get it... lol

7 0

3 years ago