16+ 44 so I =60 hdndmoaoaoajebdbvdjjssksk
Answer:
m = -1, c = 2
Step-by-step explanation:
if A ( 3, 5) and B (1, 4) lie on the graph of the line mx + cy = 7, then their coordinates satisfy the equation of the line:
A: ![3m+5c=7](https://tex.z-dn.net/?f=3m%2B5c%3D7)
B: ![m+4c=7](https://tex.z-dn.net/?f=m%2B4c%3D7)
From the second equation:
![m=7-4c](https://tex.z-dn.net/?f=m%3D7-4c)
Substitute it into the first equation:
![3(7-4c)+5c=7\\ \\21-12c+5c=7\\ \\-12c+5c=7-21\\ \\-7c=-14\\ \\c=2\\ \\m=7-4\cdot 2=7-8=-1](https://tex.z-dn.net/?f=3%287-4c%29%2B5c%3D7%5C%5C%20%5C%5C21-12c%2B5c%3D7%5C%5C%20%5C%5C-12c%2B5c%3D7-21%5C%5C%20%5C%5C-7c%3D-14%5C%5C%20%5C%5Cc%3D2%5C%5C%20%5C%5Cm%3D7-4%5Ccdot%202%3D7-8%3D-1)
Answer:
Sin x= D
Tan x= F
Cos x= F
Step-by-step explanation:
Sin= opp/adj
cos= adj/hyp
tan=opp/adj
Answer:
Practice more and do you work
Step-by-step explanation:
A) At the end of 3 years the amount in the account = Principal + Interest
Amount = 4000 + 960 = 4960
Amount at the end of 3 years = $4960
b) Formula for Rate , R = 100I/(PT)
Where I = Interest = 960, P = Principal = 4000, T= Time = 3 years
R = (100 × 960) / ( 4000 × 3)
R = 8
Rate, R = 8% per annum.
c) If the rate was 1% more, R = 8 + 1 = 9% per annum
Interest, I = PRT/100
Interest, I = 4000 × 9 × 3 /100 = 1080
Amount in her account would have been = $4000 + $1080 = $5080
Amount more = $5080 - $4960 = $120
She would have had $120 more should the rate were 1% greater.