Answer:
x = -22.5
Step-by-step explanation:
-0.4x - 3.1 = 5.9
+3.1 +3.1
-0.4x = 9
/-0.4 /-0.4
x = -22.5
By similar triangles:-
2 / x = x / 4
x^2 = 8
x = sqrt 8 = 2.83
y^2 = 4^2 + x^2
= 16 + 8
y = sqrt24 = 4.90
Answer:
it is 12
Step-by-step explanation:
i don't kow but i think 12
Answer:
H
Step-by-step explanation:
In this question, I will assume that the cost refers to the selling price (original price without discount) of the hammer.
Let the cost of each hammer be c.
∴ Cost of 50 hammers= 50c
Cost of 50 hammers= amount paid +discount given
50c= 100 +25
Here, we add the discount given since the actual cost would be $25 more than the total amount the contractor paid.
Since none of the options match our equation above, let's rearrange the equation.
Subtract both sides by 25:
50c -25= 100
Thus, H is the correct option.
To learn more about forming equations, check out: brainly.com/question/22307092
For it to be a linear equation, the same difference in x must produce the same difference in y always.
Choice A.
difference in x: 2 - 1 = 1
difference in y: -6 - (-2) = -4
difference in x: 3 - 2 = 1
difference in y: -2 - (-6) = 4
A difference of 1 in x gave a difference of -4 in y and another difference of 1 in x gave a difference of 4 in y.
This is not linear.
Choice B.
difference in x: 2 - 1 = 1
difference in y: -5 - (-2) = -3
difference in x: 3 - 2 = 1
difference in y: -9 - (-5) = -4
A difference of 1 in x gave a difference of -3 in y and another difference of 1 in x gave a difference of -4 in y.
This is not linear.
Choice C.
difference in x: 2 - 1 = 1
difference in y: -10 - (-2) = -8
difference in x: 3 - 2 = 1
difference in y: -18 - (-10) = -8
Do the other differences. All differences in y are -8 corresponding to a difference in x of -1.
This is linear.
Choice D.
The differences in y vary. It is not linear.
Answer: Choice C is linear.
