Chart are use to represent the visual outcome or status of a business, or an activity or even for any kind of reason as long as the data is complete and relevant. In addition to this, people you charts as a basis or a way of showing the growth of their work. Many people use it so that they can easily makes decision basing to what is the outcome they see in their charts.
Answer:
a) x+3x/2y or (3x+2xy)/2y
b) b^12
c) 4^3 or 64
Step-by-step explanation:
Answer:
plug each half of the ordered pair into the variable term. (x,y)
Step-by-step explanation:
For example (---,20) y=5x 20=5x divide by 5 on both sides 20/5= 4 x=4
Let the weight of the first alloy will be x grams.
Weight of gold will be 0.1x grams, weight of lead will be 0.15x grams.
Let the weight of the second alloy <span>will be y grams.
</span><span>Weight of gold will be 0.3y grams, weight of lead will be 0.4y grams.
</span>Summarizing:
0.1x+<span>0.3y=60 - gold
</span><span>0.15x+0.4y=88 - lead
</span>
0.1x+<span>0.3y=60 * 10
</span><span>0.15x+0.4y=88 * 100
</span>
x+3y=600 * 15
15x+40y=8800
15x+45y=9000
<span>15x+40y=8800
</span>
<span>15x+45y=9000 /15
</span>45y-40y=9000-8800
x+3y=600
5y=200
x+3y=600
y=40
y=40
x=600-3*40=480
y=40
<span>x=480</span>
↑The answers.
4. -5+8
5. 14x
6. 3+6x
7. -1x +-2
8. X
9. 15x+5
