Answer:
a. because it has all the necessary properties
10669 divided by 7 is about 1524.143 or 154 and 1/7 as a mixed number
5x - 7y =58
y =-x +2
Using the substitution method, replace y in the first equation with the second equation:
5x - 7(-x+2) = 58
Simplify by using the distribution property:
5x - (-7x) - 14 = 58
Simplify by combining like terms:
12x -14 = 58
Add 14 from each side of the equation:
12x = 72
Divide both sides by 12:
X = 72/12
x = 6
Now you have x, replace x in the second equation and solve for y:
y = -x +2
y = -6 +2
y = -4
X = 6, y = -4
The missing angle is 49 :)
The question relates to the total number of pairs of feet ducks and a pigs
are known to have.
<u />
- <u>There are 5 pigs and 10 ducks</u>
Reasons:
The length of the group of ducks and pigs = 40 feet
Number of ducks = Twice the number of pigs
Let <em>x</em> represent the number of pigs, and let <em>y</em> represent the number of ducks, we have;
y = 2 × x
4·x + 2·y = 40
Which gives;
4·x + 2 × (2·x) = 40
8·x = 40
x = 40 ÷ 8 = 5
- The number of pigs, <em>x</em> = 5
y = 2 × x
Therefore;
y = 2 × 5 = 10
- The number of ducks, <em>y</em> = 10
Learn more about solving word problems in mathematics here:
brainly.com/question/25272317