Answer:
No solution
Step-by-step explanation:
Because BDC is 20, and DC = DB, DBC is also 20 degrees. ABD would then be 160 since DBC and ABD has to equal 180. You know ADB is 35 so 160 + 25 + x has to equal 180. But 160 + 25 is already 185, and x can't be negative, so no solution.
Answer:
0
Step-by-step explanation:
Since you didn't attach an image of the graph I'll have to do this the hard way.
x + 2y = 2 (1)
2x + 4y = -8 (2)
x + 2y = -4 (Divide equation (2) by 2)
0 = 6 (Subtract the third equation from the first)
Since 0 is not equal to 6 the answer is No Solutions.
Answer:
-285x+12
Step-by-step explanation:
35x+19−320x−7
Combine like terms
35x-320x +19-7
-285x +12
I remember doing this. Is there a video below that to watch where you can try work it out on your own? Frequency tables are very important and will come up in future exams (e.g. GCSEs & mocks).
If you can’t still figure it out let me know and i’ll work it out & give you the answer.
This is a simple system of equations. We first write the words in math as 4x + 6y = 36 and 5y - 3x = 49.
Now we isolate 5 in the second equation to get 5y = 49+3x or y=(49+3x)/5. We can now substitute our value for y into our first equation and simplify.
4x + 6y = 36 is the same as 4x+6((49+3x)/5) = 36. This can be simplified to 4x+(294+18x)/5 = 36, which is the same as 20x+294+18x = 180. We can combine like terms to get 38x +294 = 180 or 38x = -114. Now we divide by 38 on both sides to get x = -3.
Now that we have our value for x, we substitute that value into the second equation and solve for y.
5y - 3x = 49 is the same as 5y - 3(-3) = 49 or 5y+9 = 49. This can be simplified to 5y=40 or y=8.
Our values for x and y are -3 and 8. Hope this helps!