Answer:
(6,-6)
Step-by-step explanation:
if I am correct then give me brainiest
Answer:
Finished minutes or more: Yes
Three least tired: No
Best looking bikes: No
Finished the race: Yes
Countries of origin of riders who didn't finish: Yes
Step-by-step explanation:
Things displayed on the board: name of rider, country of origin, finishing time
Finished minutes or more: anyone who finished who wasn't in first
Three least tired: subjective information, not on the board
Best looking bikes: subjective information, not on the board
Finished the race: everyone who doesn't have DNF next to their name
Countries of origin of riders who didn't finish: countries of anyone with DNF next to their name
Solve the equation for
t
t
by finding
a
a
,
b
b
, and
c
c
of the quadratic then applying the quadratic formula.
t
=
10
−
h
+
√
h
2
−
20
h
+
160
10
t
=
10
-
h
+
h
2
-
20
h
+
160
10
t
=
10
−
h
−
√
h
2
−
20
h
+
160
10
Answer: There were 290 downloads of the high-quality version.
Step-by-step explanation:
Let be "s" the number of downloads of the standard version and "h" the number of downloads of the high-quality version.
Set up a system of equations:
![\left \{ {{s+h=1040 } \atop {2.1s+4.1h=2764}} \right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7Bs%2Bh%3D1040%20%7D%20%5Catop%20%7B2.1s%2B4.1h%3D2764%7D%7D%20%5Cright.)
You can use the Elimination method. Multiply the first equation by -2.1, add the equations and then solve for "h":
![\left \{ {{-2.1s-2.1h=-2184} \atop {2.1s+4.1h=2764}} \right.\\..............................\\2h=580\\\\h=\frac{580}{2}\\\\h=290](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7B-2.1s-2.1h%3D-2184%7D%20%5Catop%20%7B2.1s%2B4.1h%3D2764%7D%7D%20%5Cright.%5C%5C..............................%5C%5C2h%3D580%5C%5C%5C%5Ch%3D%5Cfrac%7B580%7D%7B2%7D%5C%5C%5C%5Ch%3D290)
Therefore, there were 290 downloads of the high-quality version.