If she already has 18 apps, which she uses, and downloaded 12 more, then you just add 18+12.
18+12=30
hope it helps! :3
Answer:
u = 12, v= 15
Step-by-step explanation:
Given the system of simultaneous equation:
1/6 u− 1/3 v=−3... (1)
0.2u+0.1v=3.9...(2)
Rewriting both equation as fraction
1/6 u− 1/3 v=−3
1/5 u + 1/10 v = 39/10
Multiplying equation (1) by 6 and (2) by 10 we have:
u - 2v = -18... (3)
2u + v = 39...(4)
Using elimination method, we will first multiply equation (3) by 2 and (2) by 1 to have:
2u-4v = -36 ...(5)
2u+v = 39...(6)
Subtracting (5) from (6);
-4v-v = -36-39
-5v = -75
v = -75/-5
v = 15
Substituting v = 15 into equation (3) to get u we have:
u - 2(15) = -18
u - 30 = -18
u = -18+30
u = 12
The solution to the system of simultaneous equation are u = 12 and v = 15
Answer:
1:12−3z
2:6n
3:11c
4: 12-3z
Step-by-step explanation:
1:
9 - z +3 - 2z
(9+3)+(−z−2z)
<u>12−3z
</u>
2:
n +5n
<u>6n</u>
3:
12c - c
<u>11c</u>
4:
9 - z + 3 - 2z
(9+3)+(−z−2z)
<u>12-3z</u>
<u />
Hope this helped
Answer:
I think it's
Step-by-step explanation:
73.70×3
221.1
Answer:
y = -1/4x + 3
Step-by-step explanation:
Step 1: Write out known variables
m = -1/4
y = -1/4x + b
Step 2: Find <em>b</em>
2 = -1/4(4) + b
2 = -1 + b
b = 3
Step 3: Rewrite equation
y = -1/4x + 3
