Answer:
3 + 15 =
18
Step-by-step explanation:
0.5 x 6 =3
3 x 5 = 15
Answer:
A
Step-by-step explanation: Your salary will be greater than or equal to $46,000.
Answer:
B. 2x – 1 = 13 and x = 7
Step-by-step explanation:
We are given 4 equations and a solution for each. We have to tell which of the given solution satisfies the given equation.
Option A.
2x -1 = 13 and x = 6
Using this value in the equation, we get:
2(6) -1 = 13
12 - 1 = 13
11 = 13, which is not true. Hence this option is not valid
Option B.
2x - 1 = 13 and x = 7
Using the value in the equation, we get:
2(7) - 1 =13
14 - 1 =13
13 = 13, which is true. Hence this option is valid.
Option C.
2x + 1 =13 and x = 7
Using the value in the equation, we get:
2(7) + 1 = 13
15 = 13, which is not true. So this option is not valid
Option D.
2x - 1 = 13 and x = 11
Using this value in the equation, we get:
2(11) - 1 = 13
21 = 13, which is not true. Hence this option is not valid.
In which step did the student first make an error?
Answer: Step 2
Step 2 should be:
−3y = -45 + 6z
Answer:
6 pounds of green candy
Step-by-step explanation:
Let r be the weight of red candy
Let g be the weight of green candy
Total weight = 10 pounds
r + g = 10 -------------------------(I)
Total cost = $ 38.50
2.50r + 4.75g = 38.50 --------------(II)
Multiply equation (I) by -2.50
(I)* (-2.50) -2.50r - 2.50g = -25.0
(II) <u>2.50r + 4.75g = 38.50 </u> {Now add and r will be eliminated}
2.25g = 13.50
g =13.50/2.25
g = 6
Plug in the value of g in equation (I)
r + 6 = 10
r = 10 - 6
r = 4
