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Anuta_ua [19.1K]
3 years ago
13

How do you solve this equation -6x + 7y =13 and -6x +8y =20 using elimination

Mathematics
1 answer:
ohaa [14]3 years ago
8 0

Answer:

x=6,y= 7

Step-by-step explanation:

-6x +7y= 13

-6x+8y=20

-y = -7

divide through by -1

y =7

sub y= 7 in equation 1

then x= 6

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3(m - 4) < 27
Free_Kalibri [48]

Step-by-step explanation:

This is right m does equal 13. D first you multiply everything in the para thesis and so on

6 0
3 years ago
What is the sum of -6 4/5 and 6 4/5
Damm [24]

Answer:

0.

Step-by-step explanation:

same value negative plus positive is 0

8 0
3 years ago
Could anyone check my Algebra answer?
Mekhanik [1.2K]

Answer:

yes -156 is correct

Step-by-step explanation:

4 0
2 years ago
What is the volume of a cylindrical bucket that is 35 cm tall and has a base with a diameter of 21 cm? Use pi= 22/7 and round yo
Nadya [2.5K]
Hello!

Formula for the volume of a cylinder: V =  \pi  r^{2}h

Plug in the values and solve12,127.5 =  \frac{22}{7} * 10.5^2 * 35




The answer is 12,127.5. Hope I helped!


5 0
3 years ago
Dy/dx = (cos x) e^(y+sinx) and y = 0 when x = 0. find the original equation
Korvikt [17]
Find the general solution by separating the variables then integrating: 
dy / dx = cosx℮^(y + sinx) 
dy / dx = cosx℮ʸ℮^(sinx) 
℮^(-y) dy = cosx℮^(sinx) dx 
∫ ℮^(-y) dy = ∫ cosx℮^(sinx) dx 
-℮^(-y) = ℮^(sinx) + C 
℮^(-y) = C - ℮^(sinx) 
-y = ln[C - ℮^(sinx)] 
y = -ln[C - ℮^(sinx)] 

Find the particular solution by solving for the constant: 
When x = 0, y = 0 
-ln(C - 1) = 0 
ln(C - 1) = 0 
C - 1 = 1 
C = 2 
<span>y = -ln[2 - ℮^(sinx)]


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!</span>
3 0
3 years ago
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