The distance between -18 and 15 is equal to _____

Clevon forms a triangle with three straws measuring 20, 25, and 18 inches. To the nearest whole

Ne4ueva [31]

Answer:

Step-by-step explanation:

Let's label this triangle as triangle ABC. Side AB is 18, side BC is 20 and side CA is 25 and the angle we are looking for is angle C. Use the Law of Cosines to find the missing angle. You have to use the Law of Cosines because in order to use the Law of Sines you have to have an angle given and we don't so we have no other options. In our case,

$c^2=a^2+b^2-2abcosC$ which for us looks like this:

$18^2=20^2+25^2-2(20)(25)cosC$ and

$324=400+625-1000cosC$ and

$324=1025-1000cosC$ and

$-701=-1000cosC$ and

$.701=cosC$

Use the 2nd button and the cos button to find the missing angle.

Angle C = 45.4 which is, rounded to the nearest degree, 45°

8 0

3 years ago

You took one-third of an hour to walk home. How many minutes did you walk?

miskamm [114]

Answer:

20 minutes

Step-by-step explanation:

60÷3=20

Step 1 you divide 60 minutes by 1/3 which is gonna give you 20 mins

6 0

2 years ago

Read 2 more answers

3 1/9+2 1/4= what is the answer

34kurt

Answer:
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Step-by-step explanation:

3 0

3 years ago

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Neko [114]

Answer:

90.084= 5

0.0009084= 4

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers