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EastWind [94]
3 years ago
13

Fill in the blank to complete the equation below__ + 81 = 9(7+9)

Mathematics
2 answers:
sammy [17]3 years ago
6 0

Answer:

63

Step-by-step explanation:

gavmur [86]3 years ago
5 0

Answer:

Step-by-step explanation:

the answer is 63, first do 7+9, which is 16. 9x16=144. 144-81=63, which is why i believe the answer is 63.

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What are the coordinates of the point on the directed line segment from (6, -10) to
sveta [45]

Answer:

There are 2

(6 2/5, -6 2/5)

(8 3/5, 4 2/5)

Step-by-step explanation:

8 0
3 years ago
Combine the like terms to create an equivalent expression 10k + 4k
ludmilkaskok [199]

Answer:

14k

They both have the same variable, so use the communitive property and there is your answer!

4 0
3 years ago
What is 86/0.4 Please Help
IrinaK [193]

Answer:

2150

Step-by-step explanation:

86/.4=2150

5 0
3 years ago
Help please! show work
e-lub [12.9K]
Your answers are
A = 35.7°
B = 67.6°
C = 76.7°

cosine law

a^2 = b^2 + c^2 -2bc \cos A \\
-2bc \cos A = a^2 - b^2 - c^2 \\ \\
\cos A = \dfrac{a^2 - b^2 - c^2}{-2bc} \\ \\
A = \cos^{-1}\left[ \dfrac{a^2 - b^2 - c^2}{-2bc} \right] \\ \\
A = \cos^{-1}\left[ \dfrac{12^2 - 19^2 - 20^2}{-2(19)(20)} \right]  \\ \\
A = 35.723697

A = 35.723697
sine law for the rest of the angles

\displaystyle
\frac{\sin B}{b} = \frac{\sin A}{a} \\ \\
\sin B = \frac{b \sin A}{a} \\ \\
B = \sin^{-1} \left[ \frac{b \sin A}{a}  \right] \\ \\
B = \sin^{-1} \left[ \frac{19 \sin 35.723697 }{12}  \right]  \\ \\
B \approx 67.58886795

B = 67.58886795
All angles in triangle sum to 180 so find C with that

A + B + C = 180
C = 180 - A - B
C = 180 - 35.723697 - 67.58886795
C = 76.7°

7 0
3 years ago
F(x) = 4x -1 what is the value of y when x=3
harina [27]
<span>F(x) = 4x -1
Substitue 3 for x
F(3) = 4(3)-1
Multiply 4 by 3
F(3) = 12-1
Subtract
Final Answer: F(3)= 11</span>
7 0
3 years ago
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