Answer:
x=-7
Step-by-step explanation:
first, subtract 4x from both sides. then you'll get:
-9=3x+12
next subtract 12 from both sides. Then you'll get:
-21=3x
then you divide each side by 3. You get:
x=-7
Answer:
0.8 by 0.3 square meters
Step-by-step explanation:
Answer:
43.5 cm
Step-by-step explanation:
The original photocopy's length is 15 cm. If Mona enlarges the photo's length to be 45 cm, we would need to find how much 15 is multiplied by to get 45, so that we can multiply 14.5, the width, by the same amount.
45/15 = 3
14.5 * 3 = 43.5 cm
Answer:
I am going to assume that you meant x^2:
x = sqrt 2
Step-by-step explanation:
x^2 - 2 = 0
x^2 = 2
x = sqrt 2
This is a system of equations.
Let b be the blouse, and s be the sweater
b + s = 74
s = 8 + 2b
Now, solve for the b
b + 8 + 2b = 74
3b = 66
b = 22
The blouse was $22
