Answer:
The percent markdown is 25%.
Step-by-step explanation:
It got marked down by $7.
7 divided by 35 = 0.25
0.25 x 100 = 25%
X= # of birds
y= # of cats
EQUATION 1:
x + y= 52
EQUATION 2:
birds= 2 legs
cats= 4 legs
2x + 4y= 138
STEP 1:
Solve for one variable in equation 1
x + y= 52
subtract y from both sides
x= 52 - y
STEP 2:
substitute x value in equation 2
2x + 4y= 138
2(52 - y) + 4y= 138
104 - 2y + 4y= 138
104 + 2y= 138
subtract 104 from both sides
2y= 34
divide both sides by 2
y= 17 cats
STEP 3:
substitute y value in either equation
x + y= 52
x + 17= 52
subtract 17 from both sides
x= 35 birds
CHECK:
2x + 4y= 138
2(35) + 4(17)= 138
70 + 68= 138
138= 138
ANSWER: There are 17 cats and 35 birds
Hope this helps! :)
Hey there :)
Let us translate each one separately
{ Using w for unknown }
The
difference of a number divided by 3 and 5
is 2
'is' is the key-word, meaning you apply the = sign
Difference is subtraction
→ a number divided by 3 - 5 = 2
This is your equation: →
Solving for wTake 5 to the other side
[ When you see subtraction you do addition on the opposite side ]
→

Take 3 to the other side
[ When you see division you do multiplication on the opposite side ]
w = 3 x 7
w = 21
Answer:
Step-by-step explanation:
US is bisector, therefore
- 2x + 10 = 3x - 18
- 3x - 2x = 10 + 18
- x = 28°
∠BUL = 2(2x +10) = 4x + 20 = 4*28 + 20 = 132°