I assume you mean these as fractions, which in that case it is A
Answer:
B. -44
Step-by-step explanation:
0.3x-7=0.8x+15
first subtract 0.3x to the other side of 0.8x which will equal
-7=0.5x+15
Then subtract 15 to the othe side of the equal sign which will be
-22=0.5x
Then divide both sides of 0.5( use calculator and put in -22/0.5)
which will be -44
Answer:
96 points
Step-by-step explanation:
Ratio problems can be solved like this:
Let x equal an unknown value.
Now, we can write an equation.
7x + 10x +12x = 232
We want to find 12x, so we have to find x first. We can simplify our equation to:
29x = 232
Now, divide both sides by 29.
x=8
We then solve for 12x by multiplying 8 and 12, and get 96 points.
The answer is between 17 and 18.
18 x 18 = 324
17 x 17 = 289
So it would be in between
Answer:
[6, 18]
Step-by-step explanation:
the first matrix has the dimensions 1 x 2 (1 row, 2 columns). The send has the dimensions 2 x 2. Because of this it is possible to do matrix multiplication and the result will be a 1 x 2 matrix.
Multiply the column -2, 7 by the row 4, 2:
We get (-2)(4) + (7)(2), which simplfies to 6. This is the first element of the 1 x 2 product.
Multiply the column 5, -1 by the row 4, 2: We get (5)(4) + (-1)(2), or 18.
The fourth answer choice is the correct one: [6, 18]
