Answer:
Kendra should have multiplied the x-values by 75 to get the y-values
Step-by-step explanation:
Given
Table
X|| Y
1 || 75
2 || 150
3 || 225
4 || 300
5 || 375
Given that Kendra multiply x by 7.5 to get y
The relationship of x and y can be calculated as thus;
y = rx
Where y and x are the values at the y and x column respectively and r is the constant of proportionality
When y = 75, x = 1.
Plug in these values in the above formula
y = rx becomes
75 = r * 1
75 = r
r = 75
When y = 150, x = 2
150 = r * 2
Multiply both sides by ½
150 * ½ = r * 2 * ½
75 = r
r = 75
When y = 225, x = 3
225 = r * 3
Multiply both sides by ⅓
225 * ⅓ = r * 3 * ⅓
75 = r
r = 75
Notice that r remains 75 and the difference between y values is 75
If you apply these formula on when y = 300 or 375 and when x = 4 or 5, the constant of proportionality will remain The value of 75.
Hence, Kendra mistake is that; Kendra should have multiplied the x-values by 75 to get the y-values
Answer:
10
Step-by-step explanation
50 divided by 10 is 5 so
50 times 2 which is 100 divided by 10 is 10
Answer:
B)
−29
Step-by-step explanation:
2/5(2x − 12) = −28
Multiply each side by 5/2 to clear the fraction
5/2*2/5(2x − 12) = −28*5/2
2x-12 = -70
Add 12 to each side
2x-12+12 = -70+12
2x = -58
Divide by 2
2x/2 = -58/2
x = -29
For every 2 things on the right, there will be 1 of the thing on the left exg
if there are 4 boys and 2 girls in a class the ratio is 4:2 or 2:1 (ratios can be simplified like fractions)
for every 2 boys, there is 1 girl,
