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3 years ago

How can you use angle bisectors of triangles in real life situations to solve problems?

1 answer:

lina2011 [118]3 years ago

8 0

I would guess that bisecting angles and other geometrical constructs are used by architects when they are drafting the designs of buildings.

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55 and 45 find the the percent decrease round to the nearest whole number

Helen [10]

Answer:

18.18%

Step-by-step explanation:

55-45=10

10/55=0.18

5 0

3 years ago

Assume that θ is a positive acute angle.<br><br> Given: sin θ =28/53<br> Find: sin2θ

antiseptic1488 [7]

Answer:

725 - 360 = 365

365 - 360 = 5

The acute angle is 5 degrees.

sin2θ = sin(2*5) = sin(10) = 0.1736

Step-by-step explanation:

3 0

2 years ago

A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 70% pure anti

andre [41]

Answer:

First brand of antifreeze: 21 gallons

Second brand of antifreeze: 9 gallons

Step-by-step explanation:

Let's call A the amount of first brand of antifreeze. 20% pure antifreeze

Let's call B the amount of second brand of antifreeze. 70% pure antifreeze

The resulting mixture should have 35% pure antifreeze, and 30 gallons.

Then we know that the total amount of mixture will be:

$A + B = 30$

Then the total amount of pure antifreeze in the mixture will be:

$0.2A + 0.7B = 0.35 * 30$

$0.2A + 0.7B = 10.5$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.7 and add it to the second equation:

$-0.7A -0.7B = -0.7*30$

$-0.7A -0.7B = -21$

$0.2A + 0.7B = 10.5$

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

$-0.5A = -10.5$

$A = \frac{-10.5}{-0.5}$

$A = 21\ gallons$

We substitute the value of A into one of the two equations and solve for B.

$21 + B = 30$

$B = 9\ gallons$

3 0

2 years ago

A slice is made parallel to the base of a square pyramid.

Ivanshal [37]

Answer:

a) Triangle.

b) Triangle.

c) The area is 110 cm.

Step-by-step explanation:

The shape is given because it is a cross section of a Pyramid which we can see shaded in grey.

The area is given by the base times hight devided by 2. So 10cm * 22cm/2= 110cm.

Hope this helped ;)

6 0

2 years ago

Tom has to take three medicines each day. One is to be taken

tatyana61 [14]

Answer:

9pm Monday

Step-by-step explanation:

It would take 12 hours, that would be when all of the medicines would be taken at the same time, because 3/4/6 are factors of 12

5 0

3 years ago

Read 2 more answers