Answer:
$12.50
Step-by-step explanation:
so Juan got his sweater at a 25% discount. So we woukd find 25% of 10 and then add it to $10
Answer:
Step-by-step explanation:
1)
------- ( 1 )
2)
--------------( 2 )
3)
BC² = AB² + AC²
(4 + 6)² = 40 + 60
100 = 100
Satisfies Pythagoras Theorem, therefore triangle ABC is right angles triangle.
Answer: how many yards
Step-by-step explanation:
Answer:
The dimensions of the sandbox will be 15 feet by 8 feet.
Step-by-step explanation:
Suppose we want to build a rectangular sandbox where the width is 7 less than the length and the diagonal is 2 feet longer than the length.
If x is the length and y is the width in feet, then we have the equations
x - y = 7 ......... (1) and
........ (2)
Now, solving equations (1) and (2) we get
⇒
Now, squaring both sides we get,
x² + x² - 14x + 49 = x² + 4x + 4
⇒ x² - 18x + 45 = 0
⇒ (x - 15)(x - 3) = 0
⇒ x = 15 or 3
But from equation (1) x ≠ 3, then x = 15 and y = x - 7 = 8
Therefore, the dimensions of the sandbox will be 15 feet by 8 feet. (Answer)
M equals 3x+21 because you add 2x+1x=3x.then you add 14+7=21.then you combine them together to get 3x+21