The coefficient is the number in front of y. Y is considered variable because any number could be substituted for y, so y it is not a constant number.
= -2.5y + 8y - 10.5y
combine like terms
= 5.5y - 10.5y
= -5y
ANSWER: A) -5
Hope this helps! :)
Question:
The quantities x and y are proportional.
x y
5.8 7.5
11.2
Find the constant of proportionality (r) in the equation y=rx
Answer:
The constant of proportionality is 75/58 or 1.29
Step-by-step explanation:
Given
The table above
Required
Find the constant of proportionality
The question has an incomplete table but it can still be solved because x and y are proportional.
Given that
y = rx
Make r the subject of formula
Divide through by x
y/x = rx
y/x = r
r = y/x
When y = 7.5, x = 5.8
Substitute these values
r = y/x becomes
r = 7.5/5.8
Multiply denominator and numerator by 10
r = (7.5 * 10)/(5.8 * 10)
r = 75/58
In this case, it's best to leave the answer in fraction.
However, it can be solved further.
r = 75/58
r = 1.29 (Approximated)
Hence, the constant of proportionality is 75/58 or 1.29
To find 33% of 1.45 we have to transform 33% into decimal or fraction
33% is 0.33 or and multiply if by 1.45
so
0.33*1.45=0.4785
Answer:
The correct answer is (0, -2) (5, -5) (-3, 4)
Step-by-step explanation:
The given inequality is x ≥ -3
<u>To find the correct answers</u>
1) (0, -2)
x ≥ -3
0 ≥ -3 TRUE
2) (5, -5)
x ≥ -3
0 ≥ -3 TRUE
3) (-3, 4)
x ≥ -3
0 ≥ -3 TRUE
4) (-4, -2)
x ≥ -3
5 ≥ -3 FALSE
Therefore the correct answer is (0, -2) (5, -5) (-3, 4)
Answer:
n = -4
Step-by-step explanation:
6n + 9 = -3n - 21 - 6
combine like tmers:
6n + 9 = -3n - 27
add 3n to both sides:
9n + 9 = -27
subtract 9 from both sides:
9n = -36
divide by 9:
n = -4
