Answer:
40
Step-by-step explanation:
11x+13=90
11x=77
x=7
49-9=40
-4,7 I believe !sorry if it is wrong
24 hours
Step-by-step explanation:
If 6 motorcycles are made in 9 hours we indicate the ration as;
6 motorcycles = 9 hours
How many will 16 motorcycles take;
16 motorcycles = ? hours (which we shall assign as x hours)
We shall cross multiply the two rations;
6x = 16 * 9
X = 144/6
X = 24
= 24 hours
Learn More:
For more on crossmultiplying rations check out;
brainly.com/question/9033919
brainly.com/question/1706633
#LearnWithBrainly
Answer:
12
Step-by-step explanation:
We will solve each expression step by step:
<span>
Expression 1:
-12x4 + 7x3 + 6x4 - 2x3
x4 (-12 + 6) + x3 (7-2)
-6x4 + 5x3
Answer:
5x ^ 3 - 6x ^ 4
Expression 2:
-5x3 + 7x4 + 4x4 - 8x3
x4 (7 + 4) + x3 (-5-8)
11x4 - 13x3
Answer:
11x ^ 4 - 13x ^ 3
Expression 3:
-2x4 - 10x3 + 4x4 - 2x3
x4 (-2 + 4) + x3 (-10-2)
2x4 - 12x3
Answer:
2x ^ 4 - 12x ^ 3
Expression 4:
15x3 - 15x4 + 13x4 - x3
x4 (-15 + 13) + x3 (15-1)
-2x4 + 14x3
Answer:
14x ^ 3 - 2x ^ 4
Expression 5:
7x4 - 15x3 + 12x3 - 2x4
x4 (7 - 2) + x3 (-15 + 12)
5x4 - 3x3
Answer:
5x ^ 4 - 3x ^ 3</span>
