A:
a + 2 x b + 3 x c = 19
<span><span><span><span>a +<span> 2 x b </span></span>+<span> 3 x c</span></span> +<span> −2 x b</span></span> =<span> 19 +<span> −<span>2 x b</span></span></span></span>
<span><span>a +<span> 3 x c</span></span> =<span><span> −<span>2 x b</span></span> + 19</span></span>
<span><span><span>a +<span> 3 x c</span></span> +<span> −<span>3 x c </span></span></span>=<span><span><span> −<span>2 x b </span></span>+ 19 </span>+ <span>−<span>3 x c
</span></span></span></span><span>a =<span><span><span> −<span> 2 x b</span></span> − <span>3 x c</span></span> +<span> 19
</span></span></span>Just continue like this now you just have to plug them in and then solve for each one until you get a solid answer for one variable and then plug them in to find the rest.
She has $74 and now -$52, she gone to 0 and to -52, so she spends 74 + 52 = $126
Now let's see
14 albums ---------------------------------- $126
1 album ----------------------------------------- $x
14 . x = 1 . 126
14x = 126
x = 126/14
x = 9
Each album costs $9
Answer:
56
Step-by-step explanation:
((3*2)+1)*8
Answer:
136
Step-by-step explanation:
For the second question, it is 136 because for triangles all side when added always equal to 180, so if you add 24 and 20 (which = 44) and subtract it from 180, it gives you 136, which is the answer and the angle of n.
24, 31, 38, 45, 52, 59, 66, 73, 80