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Sladkaya [172]
3 years ago
12

Fill in the blank so that the equation is always true:

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
7 0

Answer:

For the first one:

Insert a "-4".

For the second one:

Insert a "+4".

I do not think you would like to hear that explanation

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Three sides of a triangle measure 8m, 14m, and 12m. Find the largest angle of the triangle to the nearest degree.
blsea [12.9K]
Perfect application for the Law of Cosines.

c^2 = a^2 + b^2 - 2ab cos C; here we want C, the angle opposite the 14 m side.

(14 m)^2 = (8 m)^2 + (12 m)^2 - 2(8 m)(12 m) cos C

196 = 64 + 144 - 192 cos C

         -12    = -192 cos C, or  cos C = 0.0625

Then C = arccos 0.0625 = 1.5083 radians
                      
                                             1.5083 radians       180 deg
                                       =  ----------------------- * -------------------
                                                          1                 3.14159 rad

                                        = 86.417 degrees

                                         = 86 degrees, when rounded off as specified.
5 0
3 years ago
Whats 1/7 divided by 2/5
Marianna [84]

Answer:

Step-by-step explanation:

(1/7) / (2/5)

when dividing fractions, flip what u r dividing by, then multiply

1/7 * 5/2 = 5/14 <==

8 0
3 years ago
What is √25 times√81 times 0?
GrogVix [38]
Well, when any equation has a 0 multiplied into it, the answer will be zero.
Anyway, √25 equals 5 
√81 equals 9 
9*5 = 45
45 * 0 = 0
I hoped I helped!
6 0
3 years ago
Carla wants to save $55.50 to buy a new video game. Carla babysits her niece once a week and earns the same amount of money each
Jet001 [13]

Answer:

$11.25

Step-by-step explanation:

55.50 divided by 6 = 9.25

9.25 + 2 = 11.25

3 0
3 years ago
Add 4.136+29.95 and show all your work!<br><br> *please don't go on the internet and copy and paste*
geniusboy [140]

Answer:

34.086

Step-by-step explanation:

4.136 can be written as 04.136

29.95 can be written as 29.950

In the sum digit at any position will be added at the digit at the same position

Carry \ \ \ 1\ \ \ \ 1\ \ \ \  \ \ \ \ 0\ \ \ \ 0\ \ \ \ 0\\4.136=0\ \ \ \ 4\ \ \ \ .\ \ \ \ 1\ \ \ \ 3\ \ \ \ 6\\29.95=2\ \ \ \ 9\ \ \ \ .\ \ \ \ 9\ \ \ \ 5\ \ \ \ 0\\\\=\ \ \ \ \ \ \ \ 3\ \ \ \ 4\ \ \ \ .\ \ \ \ 0\ \ \ \ 8\ \ \ \ 6

7 0
3 years ago
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