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4 years ago

PLEASE HELP ME!

1 answer:

6 0

E is really just 10, and +7 means it's a positive exponent. So it is 3.82 x 10 to the power of 17. I can't write exponents on my phone, but this is scientific notation.

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Whats the answer giving brainliest >>>>>>

MArishka [77]

Answer:

A is the answer

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP ASAP!!! Find the length of AC. Express your answr in terms of pi.

Rainbow [258]

<h3>Answer: 8pi</h3>

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

Explanation:

circumference = distance around the circle

In other words, if you had a curved fence around the circle, then the circumference is the perimeter of that circle (telling you how much fencing you need, assuming there's no waste)

The formula for the circumference is C = pi*d where d is the diameter. In this case, 24 ft is the diameter because this segment goes from one point on the circle to another, and this line goes through the center.

The circumference of this full circle is...

C = pi*d

C = pi*24 ... replace d with 24

C = 24pi

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

Now we don't want the whole distance around the circle. We only want a small fraction of it. Specifically from A to C along the shortest route (this is called minor arc AC). The angle measure of arc AC is 120 degrees. Why? This is because 180 - x = 180 - 60 = 120, the x = 60 refers to the measure of minor arc BC. The two arc measures combine to get 180 degrees.

Using the fact that minor arc AC is 120 degrees, this means the distance along the arc AC is 120/360 = 1/3 of the entire circumference. Note how I divided 120 over 360 because there are 360 degrees in a full circle

So...

distance along minor arc AC = (1/3)*(circumference)

distance along minor arc AC = (1/3)*(24pi)

distance along minor arc AC = 8pi

8 0

3 years ago

3. In triangle ABC, m<BAC = 4x + 10, m<ABC = 5x + 18, and m<BCA = 3x - 16. (a) Find the value of x. (b) Find th

belka [17]

(a) Find the value of x.

Sum of interior in a triangle = 180

So m<BAC + m<ABC + m<BCA = 180

4x + 10 + 5x + 18 + 3x - 16 = 180

12x + 12 = 180

12x = 168

x = 14

(b) Find the measure of <3.

<3 + <BCA = 180

<BCA = 3x - 16 = 3(14) - 16 = 26°

<3 = 180 - <BCA

<3 = 180 - 26

<3 = 154°

7 0

3 years ago

Please, help thanks! I would like an explanation how to do it too, IF you dont mind.

Aneli [31]

Answer:

Phoebe has £180, Andy has £60, and Polly has £30.

Step-by-step explanation:

Ok, to start of let's establish some variables! We'll give Phoebe the variable "p", Andy the variable "a", and Polly the variable "o". By giving each person a variable we can create an equation and solve for it!

So, what do we know?

Well we know the following information...

p + a + o = 270

(Phoebe + Andy + Polly = £270)

p = 3a

(Phoebe = 3 times more than Andy)

a = 2o

(Andy = 2 times more than Polly)

To be able to solve this equation we have to solve for just one variable first.The only one we can use is "o" for Polly!

3(2o) + 2o + o = 270

6o + 2o + o = 270 (Distribute 3 to get like terms)

9o = 270 (Combine like terms [6+2+1])

o = 30 (Divide by 9 on both sides to get "o" by itself)

Now that we have how much Polly has, we have to solve for Andy and Phoebe. (To do this we will input our value, 30, where our variable is "o")

Andy

a = 2(30) (Input term)

a = 60 (Multiply by 2 to get final answer)

(Since we now know what Andy has we can input 60 into our "a" variable to solve for Phoebe)

Phoebe

p = 3(60) (Input term)

p = 180 (Multiply by 3 to get final answer)

Now! Just to check we are going to input our variables into our original equation to be sure we have the right variables.

p + a + o = 270

180 + 60 + 30 = 270!!

Hope this Helps! :)

Have any questions? Ask below in the comments and I will try my best to answer.

-SGO

4 0

3 years ago

Round your answer to the nearest hundredth. Find angle A=?

Sonja [21]

Answer:

A=48.81

Step-by-step explanation:

it is a right angle triangle find the hypotenuse c using Pythagorean theorem:

c²=a²+b²

c²=8²+7²

c=√64+49

c=10.63

sin A =opp/hyp

sin A=8/10.63

A= 48.81

another way :

tan A=opp/adj

tan A=8/7

A=48.81

4 0

4 years ago