Answer:
The correct answer is C. 2.
Step-by-step explanation:
To solve this problem, we should begin with the second step and work backwards in order to find the unknown value. If given the equation -15x + 30 = 25, we should factor out a -15 to simplify. This method is shown below.
-15x + 30 = 25
-15(x-2) = 25
We know this is correct because if we redistribute the -15 through the parentheses using the distributive property, we would get our original equation again. In other words, this answer is confirmed by the fact that -15 * -2 equals positive 30.
However, we need to look closely at the question that is asked. The box that we must fill in is already preceded by a negative sign, thus the correct answer is C. 2.
We can check our work by replacing the box with the number 2, getting -15(x-2) + 30 = 25, which was the equation we got earlier.
Hope this helps!
Looks like you have to attach a picture. It wont work, because all you did was copy it.
Answer:
x = 5
y = -1.25
Step-by-step explanation:
3x+4y=10
3x-4y=20
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6x=30
x=5
3(5)-4y=20
15-4y=20
-4y=5
y=-1.25
Answer:
3.6
Step-by-step explanation:
The 6 is in the tenth place. Because the 1 is less than 5, it turns into 0.
blue could be 2 out of 6 numbers so 2/6 which reduces to 1/3
for green you have 1 out of 6 or 1/6
now multiply
1/3 x 1/6 = 1/18 probability
