The answer is 9x - 90y = 20.
Explanation:
y = 1/10 x - 2/9
First eliminate the fractions by multiplying through by the LCM which is 90:-
90y = 9x - 20
Standard form is ax + by = c, so rearranging we get:
0 = 9x - 90y - 20
9x - 90y = 20 .
Answer:
B. 80 cm of chain weighs 2 kg.
Step-by-step explanation:
In order to choose the correct answer, we need to define the comparative relation between the length and weight of the chain. We will do this by performing the simple operation of division.
It is easier to divide the larger number by the smaller and that is what we will show here (although <em>you can do as you wish and still get the same result</em> - it's math!):
320 ÷ 8 = 40
The result we got is 40. This means that <u>the length of the chain is equal to the value of forty of its weights!</u> And this will be the operation we will perform in order to determine the right answer:
A) Does 2 (kg) multiplied by 40 equal 40 (cm)? No, therefore, it is incorrect.
B) Does 2 (kg) multiplied by 40 equal 80 (cm)? <u>Yes, this answer is correct!</u>
Just in case, we will perform this action with the rest of the possible choices:
C) 4 kg × 40 = 160 and NOT 80 cm.
D) 2 kg × 40 = 80 and NOT 160 cm.
Answer:
The correct answers is -8.3232
Step-by-step explanation:
Answer:
Figure 2 and 3 are correct
Step-by-step explanation:
This question is incomplete, the figures are attached.
Number of cans of beans bought by Emery = 3
Total weight of cans = 2.4 pounds
Therefore the weight of each can = 2.4/4 = 0.8 pounds
The can be represented by the equation:
y = 0.8x, where x is the number of cans and y represents the total weight
From the graph of figure 1, weight of each can = 20/16 = 1.25 pounds. This is not correct
From the graph of figure 2, weight of each can = 8/10 = 0.8 pounds. This is correct
From the table of figure 3, weight of each can = 4/5 = 0.8 pounds. This is correct
From the table of figure 4, weight of each can = 5/4 = 1.25 pounds. This is not correct
