Answer:
y=11
x=-4
Step-by-step explanation:
y =-x+7
2x-5y=-7
insert the first equation into the second like so...
2x+5x-35=-7
Now rearrange...
2x+5x=-7+35
Now solve...
7x=-28
x=-4
Now incert x in any equation...
y=4+7
y=11
Answer:
2/n^4
Step-by-step explanation:
Anything to the zero power will become 1 so the m^0 will be 1 and that leaves just 2 in its place. Anything to a negative exponent is equal to its reciprocal so n^-1= 1/n^4. Then you multiple what remains, (2 x 1/n^4) to get the above answer.
Answer:
b = 10, c = 9
Step-by-step explanation:
For the triangles to be congruent by the HL postulate, then
UW = DF ( hypotenuse are congruent ), that is
12b - 34 = 5b + 36 ( subtract 5b from both sides )
7b 0 34 = 36 ( add 34 to both sides )
7b = 70 ( divide both sides by 7 )
b = 10
and
UV = EF ( legs are congruent )
4c - 9 = 3c ( subtract 3c from both sides )
c - 9 = 0 ( add 9 to both sides )
c = 9
Answer:
1-a-b-c
Step-by-step explanation:
1 + (-a) + (-b) + (-c)
1-a-b-c
Answer:
t = 2.58333
Step-by-step explanation:
use the distributive property:
200 = 16(6t - 3)
multiply the 16 to each value in the parenthesis:
200 = 96t - 48
now add 48 to both sides:
200 = 96t - 48
+48 + 48
248 = 96t
now divide each side by 96:
248/96 = 96t/96
t = 2.583333
decimal form: 2.5833333
mixed number: 
