Answer:
40:80
Step-by-step explanation:
x+2x=3x
3x=120
120/3=
40
40*2=80
40:80=1:2
Answer:
-5/12
Step-by-step explanation:
2/3x (1/4-7/8)
2/3 * (2-7/8)
2/3 * (-5/8)
-5/12
9514 1404 393
Answer:
x -y = -5
3x +y = -11
Step-by-step explanation:
We assume you want two linear equations. Since you know a point on each line, the only thing you need to choose is the slope of the two lines through that point. We can make the slopes be +1 and -3, for example. Then the point-slope equations are ...
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
y -1 = +1(x +4)
y -1 = -3(x +4)
We can use these equations "as is", or put them in whatever form you like. I personally prefer "standard form:" ax+by=c.
<u>First equation</u>:
y -1 = x +4 . . . . . . eliminate parentheses
-5 = x -y . . . . . . . keep positive x term, put x and y together, separate from the constant
x - y = -5 . . . . . . standard form
<u>Second equation</u>:
y -1 = -3x -12 . . . . eliminate parentheses
3x +y = -11 . . . . . . add 3x+1 to both sides
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A system of equations with solution (-4, 1) is ...
Answer:
18,000 meters
Step-by-step explanation:
We know:
Substitute:
{ v = 4 ⇒ INTO FORMULA ⇒ D = V × T : D = 4 × 24
{ t = 24
Cross out the common factor:
⇒ 6 × 3000
Calculate the product or quotient:
⇒ 18,000
9514 1404 393
Answer:
-4
Step-by-step explanation:
(f/g)(1) = f(1)/g(1) = 4/-1 = -4
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Read f(1) and g(1) from the table. They are listed in the column with x=1.